java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem14_label55_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:07:14,989 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:07:14,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:07:15,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:07:15,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:07:15,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:07:15,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:07:15,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:07:15,010 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:07:15,011 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:07:15,012 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:07:15,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:07:15,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:07:15,014 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:07:15,016 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:07:15,016 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:07:15,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:07:15,019 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:07:15,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:07:15,023 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:07:15,024 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:07:15,025 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:07:15,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:07:15,036 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:07:15,036 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:07:15,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:07:15,038 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:07:15,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:07:15,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:07:15,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:07:15,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:07:15,055 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:07:15,055 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:07:15,055 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:07:15,056 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:07:15,056 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:07:15,056 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:07:15,056 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:07:15,056 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:07:15,057 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:07:15,057 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:07:15,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:07:15,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:07:15,058 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:07:15,058 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:07:15,058 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:07:15,058 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:07:15,059 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:07:15,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:07:15,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:07:15,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:07:15,059 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:07:15,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:07:15,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:07:15,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:07:15,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:07:15,060 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:07:15,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:07:15,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:07:15,061 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:07:15,061 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:07:15,061 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:07:15,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:07:15,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:07:15,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:07:15,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:07:15,125 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:07:15,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c [2018-10-27 03:07:15,187 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc571fe01/fb6e5edc5a104c4ab1fc8b7d0c946e34/FLAGb49f6efdf [2018-10-27 03:07:15,830 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:07:15,831 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c [2018-10-27 03:07:15,848 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc571fe01/fb6e5edc5a104c4ab1fc8b7d0c946e34/FLAGb49f6efdf [2018-10-27 03:07:15,867 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc571fe01/fb6e5edc5a104c4ab1fc8b7d0c946e34 [2018-10-27 03:07:15,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:07:15,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:07:15,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:07:15,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:07:15,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:07:15,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:07:15" (1/1) ... [2018-10-27 03:07:15,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f01871d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:15, skipping insertion in model container [2018-10-27 03:07:15,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:07:15" (1/1) ... [2018-10-27 03:07:15,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:07:15,974 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:07:16,503 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:07:16,508 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:07:16,703 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:07:16,722 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:07:16,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16 WrapperNode [2018-10-27 03:07:16,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:07:16,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:07:16,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:07:16,724 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:07:16,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:16,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:16,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:07:16,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:07:16,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:07:16,966 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:07:16,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:16,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:17,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:17,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:17,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:17,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:17,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... [2018-10-27 03:07:17,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:07:17,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:07:17,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:07:17,079 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:07:17,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 03:07:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:07:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:07:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:07:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:07:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:07:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:07:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:07:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:07:20,685 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:07:20,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:07:20 BoogieIcfgContainer [2018-10-27 03:07:20,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:07:20,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:07:20,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:07:20,697 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:07:20,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:07:15" (1/3) ... [2018-10-27 03:07:20,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c7c8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:07:20, skipping insertion in model container [2018-10-27 03:07:20,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:07:16" (2/3) ... [2018-10-27 03:07:20,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c7c8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:07:20, skipping insertion in model container [2018-10-27 03:07:20,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:07:20" (3/3) ... [2018-10-27 03:07:20,702 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label55_true-unreach-call_false-termination.c [2018-10-27 03:07:20,713 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:07:20,728 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:07:20,746 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:07:20,796 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:07:20,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:07:20,796 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:07:20,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:07:20,797 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:07:20,797 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:07:20,797 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:07:20,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:07:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 03:07:20,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-27 03:07:20,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:07:20,834 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] [2018-10-27 03:07:20,836 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:07:20,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:07:20,843 INFO L82 PathProgramCache]: Analyzing trace with hash -353931284, now seen corresponding path program 1 times [2018-10-27 03:07:20,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:07:20,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:20,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:07:20,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:20,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:07:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:07:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:07:21,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:07:21,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:07:21,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:07:21,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:07:21,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:07:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:07:21,453 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 03:07:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:07:24,302 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-27 03:07:24,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:07:24,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-10-27 03:07:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:07:24,327 INFO L225 Difference]: With dead ends: 894 [2018-10-27 03:07:24,327 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 03:07:24,338 INFO L605 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 [2018-10-27 03:07:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 03:07:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-27 03:07:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-27 03:07:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-27 03:07:24,438 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 64 [2018-10-27 03:07:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:07:24,439 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-27 03:07:24,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:07:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-27 03:07:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-27 03:07:24,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:07:24,454 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:07:24,455 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:07:24,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:07:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash 835688739, now seen corresponding path program 1 times [2018-10-27 03:07:24,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:07:24,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:24,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:07:24,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:24,457 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:07:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:07:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:07:24,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:07:24,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:07:24,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:07:24,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:07:24,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:07:24,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:07:24,829 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-27 03:07:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:07:28,164 INFO L93 Difference]: Finished difference Result 2358 states and 3926 transitions. [2018-10-27 03:07:28,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:07:28,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-27 03:07:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:07:28,182 INFO L225 Difference]: With dead ends: 2358 [2018-10-27 03:07:28,182 INFO L226 Difference]: Without dead ends: 1731 [2018-10-27 03:07:28,189 INFO L605 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 [2018-10-27 03:07:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-27 03:07:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-27 03:07:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-27 03:07:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-10-27 03:07:28,292 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 177 [2018-10-27 03:07:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:07:28,293 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-10-27 03:07:28,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:07:28,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-10-27 03:07:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-27 03:07:28,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:07:28,316 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:07:28,316 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:07:28,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:07:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1405952572, now seen corresponding path program 1 times [2018-10-27 03:07:28,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:07:28,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:28,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:07:28,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:28,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:07:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:07:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:07:28,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:07:28,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:07:28,955 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-27 03:07:28,959 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:07:29,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:07:29,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:07:31,536 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:07:31,538 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:07:31,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:07:31,553 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:07:33,857 INFO L227 lantSequenceWeakener]: Weakened 252 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-27 03:07:33,858 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:07:34,336 INFO L415 sIntCurrentIteration]: We unified 259 AI predicates to 259 [2018-10-27 03:07:34,337 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:07:34,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:07:34,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:07:34,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:07:34,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:07:34,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:07:34,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:07:34,343 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 7 states. [2018-10-27 03:07:36,568 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:08:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:08:04,005 INFO L93 Difference]: Finished difference Result 3641 states and 5476 transitions. [2018-10-27 03:08:04,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:08:04,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2018-10-27 03:08:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:08:04,018 INFO L225 Difference]: With dead ends: 3641 [2018-10-27 03:08:04,019 INFO L226 Difference]: Without dead ends: 1916 [2018-10-27 03:08:04,025 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:08:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-27 03:08:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-27 03:08:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-27 03:08:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2811 transitions. [2018-10-27 03:08:04,086 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2811 transitions. Word has length 260 [2018-10-27 03:08:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:08:04,088 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2811 transitions. [2018-10-27 03:08:04,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:08:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2811 transitions. [2018-10-27 03:08:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-27 03:08:04,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:08:04,096 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:08:04,097 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:08:04,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:08:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1712998387, now seen corresponding path program 1 times [2018-10-27 03:08:04,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:08:04,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:08:04,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:08:04,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:08:04,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:08:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:08:04,669 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:08:04,891 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 03:08:05,098 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:08:05,354 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-27 03:08:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 258 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:08:05,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:08:05,867 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:08:05,868 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-10-27 03:08:05,868 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:08:05,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:08:05,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:08:10,089 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:08:10,090 INFO L272 AbstractInterpreter]: Visited 121 different actions 235 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:08:10,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:08:10,098 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:08:13,151 INFO L227 lantSequenceWeakener]: Weakened 128 states. On average, predicates are now at 78.05% of their original sizes. [2018-10-27 03:08:13,151 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:08:34,733 INFO L415 sIntCurrentIteration]: We unified 344 AI predicates to 344 [2018-10-27 03:08:34,733 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:08:34,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:08:34,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-27 03:08:34,734 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:08:34,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:08:34,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:08:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:08:34,735 INFO L87 Difference]: Start difference. First operand 1914 states and 2811 transitions. Second operand 18 states. [2018-10-27 03:09:58,014 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 03:10:55,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 03:10:55,506 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:10:55,512 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:10:55,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:10:55 BoogieIcfgContainer [2018-10-27 03:10:55,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:10:55,514 INFO L168 Benchmark]: Toolchain (without parser) took 219633.92 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -416.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:10:55,515 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:10:55,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 840.65 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. [2018-10-27 03:10:55,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 238.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:10:55,518 INFO L168 Benchmark]: Boogie Preprocessor took 112.48 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:10:55,518 INFO L168 Benchmark]: RCFGBuilder took 3610.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.8 MB). Peak memory consumption was 131.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:10:55,519 INFO L168 Benchmark]: TraceAbstraction took 214820.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 226.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 03:10:55,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 840.65 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 238.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.48 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3610.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.8 MB). Peak memory consumption was 131.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214820.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 226.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1098 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 214.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 176.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 531 SDtfs, 2444 SDslu, 495 SDs, 0 SdLazy, 4298 SolverSat, 869 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 621 GetRequests, 569 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959471963852234 AbsIntWeakeningRatio, 0.09618573797678276 AbsIntAvgWeakeningVarsNumRemoved, 592.6849087893864 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 846 NumberOfCodeBlocks, 846 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 842 ConstructedInterpolants, 0 QuantifiedInterpolants, 1576239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 516/679 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown