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/Problem17_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:13:28,718 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:13:28,721 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:13:28,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:13:28,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:13:28,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:13:28,748 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:13:28,750 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:13:28,751 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:13:28,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:13:28,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:13:28,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:13:28,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:13:28,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:13:28,757 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:13:28,757 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:13:28,758 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:13:28,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:13:28,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:13:28,764 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:13:28,766 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:13:28,767 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:13:28,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:13:28,779 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 [2018-10-24 22:13:28,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:13:28,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:13:28,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:13:28,797 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:13:28,797 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:13:28,797 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:13:28,797 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:13:28,798 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:13:28,798 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:13:28,798 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:13:28,799 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:13:28,799 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:13:28,800 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:13:28,800 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:13:28,800 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:13:28,800 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:13:28,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:13:28,802 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:13:28,802 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:13:28,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:13:28,802 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:13:28,802 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:13:28,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:13:28,803 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:13:28,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:13:28,804 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:13:28,804 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:13:28,804 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:13:28,804 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:13:28,804 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:13:28,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:13:28,805 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:13:28,805 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:13:28,805 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:13:28,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:13:28,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:13:28,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:13:28,897 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:13:28,898 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:13:28,899 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c [2018-10-24 22:13:28,964 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9ed2e3b72/bdf76ac46c3d4897834ca901397ccc67/FLAGbb40d589a [2018-10-24 22:13:29,721 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:13:29,723 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c [2018-10-24 22:13:29,754 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9ed2e3b72/bdf76ac46c3d4897834ca901397ccc67/FLAGbb40d589a [2018-10-24 22:13:29,778 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9ed2e3b72/bdf76ac46c3d4897834ca901397ccc67 [2018-10-24 22:13:29,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:13:29,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:13:29,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:13:29,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:13:29,802 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:13:29,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:29" (1/1) ... [2018-10-24 22:13:29,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:29, skipping insertion in model container [2018-10-24 22:13:29,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:29" (1/1) ... [2018-10-24 22:13:29,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:13:29,933 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:13:30,932 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:13:30,937 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:13:31,331 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:13:31,357 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:13:31,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31 WrapperNode [2018-10-24 22:13:31,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:13:31,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:13:31,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:13:31,359 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:13:31,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:31,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:31,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:13:31,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:13:31,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:13:31,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:13:31,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:31,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:31,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:31,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:32,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:32,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:32,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (1/1) ... [2018-10-24 22:13:32,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:13:32,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:13:32,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:13:32,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:13:32,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (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 [2018-10-24 22:13:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:13:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:13:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:13:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:13:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:13:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:13:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:13:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:13:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:13:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:13:45,859 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:13:45,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:45 BoogieIcfgContainer [2018-10-24 22:13:45,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:13:45,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:13:45,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:13:45,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:13:45,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:29" (1/3) ... [2018-10-24 22:13:45,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46dc5ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:45, skipping insertion in model container [2018-10-24 22:13:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:31" (2/3) ... [2018-10-24 22:13:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46dc5ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:45, skipping insertion in model container [2018-10-24 22:13:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:45" (3/3) ... [2018-10-24 22:13:45,871 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label48_true-unreach-call.c [2018-10-24 22:13:45,882 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:13:45,894 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:13:45,914 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:13:45,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:13:45,959 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:13:45,959 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:13:45,959 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:13:45,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:13:45,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:13:45,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:13:45,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:13:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:13:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 22:13:46,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:46,008 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:13:46,010 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:46,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1958130412, now seen corresponding path program 1 times [2018-10-24 22:13:46,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:46,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:46,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:46,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:46,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:46,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:46,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:13:46,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:46,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:13:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:13:46,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:13:46,591 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:14:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:00,514 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-24 22:14:00,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:14:00,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-24 22:14:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:00,550 INFO L225 Difference]: With dead ends: 2142 [2018-10-24 22:14:00,550 INFO L226 Difference]: Without dead ends: 1532 [2018-10-24 22:14:00,561 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 [2018-10-24 22:14:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-24 22:14:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-24 22:14:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-24 22:14:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-24 22:14:00,726 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 50 [2018-10-24 22:14:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:00,727 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-24 22:14:00,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:14:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-24 22:14:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 22:14:00,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:00,735 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:14:00,735 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:00,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:00,736 INFO L82 PathProgramCache]: Analyzing trace with hash 401546274, now seen corresponding path program 1 times [2018-10-24 22:14:00,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:00,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:00,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:00,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:00,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:01,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:14:01,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:14:01,050 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:14:01,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:14:01,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:14:01,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:14:01,053 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-24 22:14:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:13,454 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-24 22:14:13,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:14:13,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-24 22:14:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:13,479 INFO L225 Difference]: With dead ends: 4424 [2018-10-24 22:14:13,479 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 22:14:13,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:14:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 22:14:13,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-24 22:14:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-24 22:14:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-24 22:14:13,607 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 122 [2018-10-24 22:14:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:13,608 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-24 22:14:13,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:14:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-24 22:14:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 22:14:13,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:13,613 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:14:13,613 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:13,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:13,614 INFO L82 PathProgramCache]: Analyzing trace with hash -335007702, now seen corresponding path program 1 times [2018-10-24 22:14:13,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:13,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:13,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:13,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:13,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:13,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:13,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:14:13,955 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-10-24 22:14:13,957 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1010], [1012], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:14:14,041 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:14:14,041 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:14:15,786 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:14:36,088 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:14:36,089 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:14:36,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:36,146 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:14:36,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:36,147 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:14:36,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:36,167 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:14:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:36,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:15:05,060 WARN L179 SmtUtils]: Spent 24.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:15:25,268 WARN L179 SmtUtils]: Spent 16.09 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 22:15:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:15:25,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:15:30,397 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:15:30,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:15:33,015 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:15:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:15:33,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:15:33,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 22:15:33,375 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:15:33,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:15:33,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:15:33,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:15:33,376 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 6 states. [2018-10-24 22:16:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:16:38,326 INFO L93 Difference]: Finished difference Result 11151 states and 17720 transitions. [2018-10-24 22:16:38,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:16:38,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 22:16:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:16:38,392 INFO L225 Difference]: With dead ends: 11151 [2018-10-24 22:16:38,392 INFO L226 Difference]: Without dead ends: 8282 [2018-10-24 22:16:38,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:16:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2018-10-24 22:16:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8241. [2018-10-24 22:16:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8241 states. [2018-10-24 22:16:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 12389 transitions. [2018-10-24 22:16:38,664 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 12389 transitions. Word has length 125 [2018-10-24 22:16:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:16:38,665 INFO L481 AbstractCegarLoop]: Abstraction has 8241 states and 12389 transitions. [2018-10-24 22:16:38,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:16:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 12389 transitions. [2018-10-24 22:16:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 22:16:38,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:16:38,676 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:16:38,677 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:16:38,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:16:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 904964573, now seen corresponding path program 1 times [2018-10-24 22:16:38,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:16:38,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:38,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:16:38,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:38,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:16:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:16:39,003 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:16:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:16:39,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:16:39,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:16:39,297 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:16:39,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:16:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:16:39,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:16:39,298 INFO L87 Difference]: Start difference. First operand 8241 states and 12389 transitions. Second operand 6 states. [2018-10-24 22:16:44,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:16:44,717 INFO L93 Difference]: Finished difference Result 20164 states and 31050 transitions. [2018-10-24 22:16:44,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:16:44,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-10-24 22:16:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:16:44,798 INFO L225 Difference]: With dead ends: 20164 [2018-10-24 22:16:44,798 INFO L226 Difference]: Without dead ends: 11929 [2018-10-24 22:16:44,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:16:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11929 states. [2018-10-24 22:16:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11929 to 11831. [2018-10-24 22:16:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11831 states. [2018-10-24 22:16:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11831 states to 11831 states and 15583 transitions. [2018-10-24 22:16:45,208 INFO L78 Accepts]: Start accepts. Automaton has 11831 states and 15583 transitions. Word has length 194 [2018-10-24 22:16:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:16:45,210 INFO L481 AbstractCegarLoop]: Abstraction has 11831 states and 15583 transitions. [2018-10-24 22:16:45,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:16:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 11831 states and 15583 transitions. [2018-10-24 22:16:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 22:16:45,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:16:45,219 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:16:45,219 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:16:45,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:16:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash 263151092, now seen corresponding path program 1 times [2018-10-24 22:16:45,221 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:16:45,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:45,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:16:45,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:45,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:16:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:16:45,576 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:16:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 107 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 22:16:45,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:16:45,865 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:16:45,866 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-24 22:16:45,866 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1010], [1012], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:16:45,875 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:16:45,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:16:47,468 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:17:19,649 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:17:19,650 INFO L272 AbstractInterpreter]: Visited 97 different actions 657 times. Merged at 7 different actions 46 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 22:17:19,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:19,685 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:17:19,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:17:19,685 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:17:19,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:19,693 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:17:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:19,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:17:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 22:17:19,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:17:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 22:17:19,913 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:17:19,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 22:17:19,913 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:17:19,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:17:19,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:17:19,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:17:19,915 INFO L87 Difference]: Start difference. First operand 11831 states and 15583 transitions. Second operand 3 states. [2018-10-24 22:17:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:17:27,419 INFO L93 Difference]: Finished difference Result 23656 states and 31214 transitions. [2018-10-24 22:17:27,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:17:27,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-10-24 22:17:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:17:27,474 INFO L225 Difference]: With dead ends: 23656 [2018-10-24 22:17:27,475 INFO L226 Difference]: Without dead ends: 11831 [2018-10-24 22:17:27,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 434 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:17:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11831 states. [2018-10-24 22:17:27,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11831 to 11831. [2018-10-24 22:17:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11831 states. [2018-10-24 22:17:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11831 states to 11831 states and 14824 transitions. [2018-10-24 22:17:27,752 INFO L78 Accepts]: Start accepts. Automaton has 11831 states and 14824 transitions. Word has length 217 [2018-10-24 22:17:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:17:27,755 INFO L481 AbstractCegarLoop]: Abstraction has 11831 states and 14824 transitions. [2018-10-24 22:17:27,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:17:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 11831 states and 14824 transitions. [2018-10-24 22:17:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-24 22:17:27,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:27,770 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:17:27,770 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:27,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:27,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2085433679, now seen corresponding path program 1 times [2018-10-24 22:17:27,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:27,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:27,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:27,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:27,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 86 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:17:28,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:17:28,397 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:17:28,398 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-24 22:17:28,398 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1010], [1012], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1306], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:17:28,404 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:17:28,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:17:30,066 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:17:30,264 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:17:30,264 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:17:30,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:30,270 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:17:32,623 INFO L232 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 75.57% of their original sizes. [2018-10-24 22:17:32,624 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:17:33,250 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:17:33,255 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:17:33,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:33 BoogieIcfgContainer [2018-10-24 22:17:33,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:17:33,257 INFO L168 Benchmark]: Toolchain (without parser) took 243466.41 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 3.9 GB in the end (delta: -2.4 GB). Peak memory consumption was 223.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:33,260 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-24 22:17:33,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1563.73 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:33,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 489.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:33,263 INFO L168 Benchmark]: Boogie Preprocessor took 276.90 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:33,264 INFO L168 Benchmark]: RCFGBuilder took 13736.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 464.5 MB). Peak memory consumption was 464.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:17:33,265 INFO L168 Benchmark]: TraceAbstraction took 227393.49 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.1 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:17:33,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1563.73 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 489.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 276.90 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13736.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 464.5 MB). Peak memory consumption was 464.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227393.49 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.1 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 137). Cancelled while BasicCegarLoop was analyzing trace of length 255 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 227.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 104.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1849 SDtfs, 8193 SDslu, 1047 SDs, 0 SdLazy, 11972 SolverSat, 4298 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 98.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 728 GetRequests, 686 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 57.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11831occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 57.8s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9961690483429613 AbsIntWeakeningRatio, 0.1067193675889328 AbsIntAvgWeakeningVarsNumRemoved, 1052.6679841897233 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 188 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 59.1s InterpolantComputationTime, 1050 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1383 ConstructedInterpolants, 124 QuantifiedInterpolants, 1965693 SizeOfPredicates, 5 NumberOfNonLiveVariables, 685 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 577/710 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown