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/Problem18_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:53:10,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:53:10,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:53:10,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:53:10,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:53:10,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:53:10,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:53:10,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:53:10,729 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:53:10,730 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:53:10,732 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:53:10,732 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:53:10,733 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:53:10,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:53:10,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:53:10,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:53:10,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:53:10,746 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:53:10,750 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:53:10,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:53:10,755 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:53:10,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:53:10,759 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:53:10,771 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 [2018-10-23 22:53:10,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:53:10,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:53:10,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:53:10,796 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:53:10,796 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:53:10,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:53:10,796 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:53:10,796 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:53:10,797 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:53:10,797 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:53:10,797 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:53:10,797 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:53:10,798 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:53:10,798 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:53:10,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:53:10,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:53:10,799 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:53:10,799 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:53:10,799 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:53:10,799 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:53:10,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:53:10,800 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:53:10,800 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:53:10,800 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:53:10,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:53:10,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:53:10,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:53:10,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:53:10,801 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:53:10,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:53:10,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:53:10,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:53:10,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:53:10,802 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:53:10,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:53:10,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:53:10,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:53:10,867 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:53:10,868 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:53:10,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-10-23 22:53:10,938 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/575e3d762/4f716248b0ea44108884d256900a084c/FLAG4831adcf4 [2018-10-23 22:53:11,632 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:53:11,633 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-10-23 22:53:11,660 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/575e3d762/4f716248b0ea44108884d256900a084c/FLAG4831adcf4 [2018-10-23 22:53:11,679 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/575e3d762/4f716248b0ea44108884d256900a084c [2018-10-23 22:53:11,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:53:11,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:53:11,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:53:11,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:53:11,702 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:53:11,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:53:11" (1/1) ... [2018-10-23 22:53:11,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1816ef0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:11, skipping insertion in model container [2018-10-23 22:53:11,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:53:11" (1/1) ... [2018-10-23 22:53:11,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:53:11,867 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:53:12,856 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:53:12,860 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:53:13,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:53:13,329 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:53:13,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13 WrapperNode [2018-10-23 22:53:13,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:53:13,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:53:13,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:53:13,331 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:53:13,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:53:13,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:53:13,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:53:13,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:53:13,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (1/1) ... [2018-10-23 22:53:13,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:53:13,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:53:13,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:53:13,978 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:53:13,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (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 [2018-10-23 22:53:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:53:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:53:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:53:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:53:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:53:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:53:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:53:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:53:14,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:53:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:53:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:53:14,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:53:22,339 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:53:22,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:53:22 BoogieIcfgContainer [2018-10-23 22:53:22,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:53:22,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:53:22,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:53:22,347 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:53:22,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:53:11" (1/3) ... [2018-10-23 22:53:22,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3615a085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:53:22, skipping insertion in model container [2018-10-23 22:53:22,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:53:13" (2/3) ... [2018-10-23 22:53:22,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3615a085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:53:22, skipping insertion in model container [2018-10-23 22:53:22,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:53:22" (3/3) ... [2018-10-23 22:53:22,351 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label00_false-unreach-call.c [2018-10-23 22:53:22,361 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:53:22,370 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:53:22,388 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:53:22,434 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:53:22,434 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:53:22,434 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:53:22,435 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:53:22,435 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:53:22,435 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:53:22,435 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:53:22,435 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:53:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-23 22:53:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-23 22:53:22,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:22,480 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] [2018-10-23 22:53:22,483 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:22,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:22,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1170183564, now seen corresponding path program 1 times [2018-10-23 22:53:22,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:22,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:22,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:22,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:22,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:22,873 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:53:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:22,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:22,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:53:22,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:23,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:53:23,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:53:23,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:53:23,022 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-23 22:53:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:53:29,345 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-23 22:53:29,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:53:29,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-23 22:53:29,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:53:29,393 INFO L225 Difference]: With dead ends: 2251 [2018-10-23 22:53:29,393 INFO L226 Difference]: Without dead ends: 1474 [2018-10-23 22:53:29,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:53:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-23 22:53:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-23 22:53:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-23 22:53:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-23 22:53:29,573 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 26 [2018-10-23 22:53:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:53:29,573 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-23 22:53:29,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:53:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-23 22:53:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-23 22:53:29,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:29,583 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:53:29,583 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:29,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:29,584 INFO L82 PathProgramCache]: Analyzing trace with hash -246185793, now seen corresponding path program 1 times [2018-10-23 22:53:29,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:29,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:29,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:29,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:29,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:29,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:29,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:53:29,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:29,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:53:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:53:29,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:53:29,851 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-23 22:53:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:53:38,721 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-23 22:53:38,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:53:38,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-10-23 22:53:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:53:38,744 INFO L225 Difference]: With dead ends: 4419 [2018-10-23 22:53:38,744 INFO L226 Difference]: Without dead ends: 2951 [2018-10-23 22:53:38,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:53:38,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-23 22:53:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-23 22:53:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-23 22:53:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-23 22:53:38,856 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 97 [2018-10-23 22:53:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:53:38,858 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-23 22:53:38,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:53:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-23 22:53:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:53:38,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:38,865 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:53:38,865 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:38,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:38,866 INFO L82 PathProgramCache]: Analyzing trace with hash 424888758, now seen corresponding path program 1 times [2018-10-23 22:53:38,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:38,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:38,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:38,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:38,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:39,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:39,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:53:39,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:39,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:53:39,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:53:39,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:53:39,318 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-23 22:53:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:53:53,286 INFO L93 Difference]: Finished difference Result 11200 states and 19606 transitions. [2018-10-23 22:53:53,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 22:53:53,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-23 22:53:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:53:53,365 INFO L225 Difference]: With dead ends: 11200 [2018-10-23 22:53:53,366 INFO L226 Difference]: Without dead ends: 8281 [2018-10-23 22:53:53,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:53:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2018-10-23 22:53:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8201. [2018-10-23 22:53:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8201 states. [2018-10-23 22:53:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 12122 transitions. [2018-10-23 22:53:53,662 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 12122 transitions. Word has length 102 [2018-10-23 22:53:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:53:53,663 INFO L481 AbstractCegarLoop]: Abstraction has 8201 states and 12122 transitions. [2018-10-23 22:53:53,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:53:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 12122 transitions. [2018-10-23 22:53:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-23 22:53:53,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:53:53,666 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:53:53,666 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:53:53,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:53:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash -778397718, now seen corresponding path program 1 times [2018-10-23 22:53:53,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:53:53,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:53,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:53:53,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:53:53,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:53:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:53:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:53:53,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:53:53,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:53:53,886 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:53:53,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:53:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:53:53,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:53:53,888 INFO L87 Difference]: Start difference. First operand 8201 states and 12122 transitions. Second operand 4 states. [2018-10-23 22:54:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:54:01,213 INFO L93 Difference]: Finished difference Result 29374 states and 46971 transitions. [2018-10-23 22:54:01,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:54:01,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-10-23 22:54:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:54:01,374 INFO L225 Difference]: With dead ends: 29374 [2018-10-23 22:54:01,374 INFO L226 Difference]: Without dead ends: 21179 [2018-10-23 22:54:01,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:54:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-10-23 22:54:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 21179. [2018-10-23 22:54:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21179 states. [2018-10-23 22:54:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21179 states to 21179 states and 31625 transitions. [2018-10-23 22:54:02,149 INFO L78 Accepts]: Start accepts. Automaton has 21179 states and 31625 transitions. Word has length 124 [2018-10-23 22:54:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:54:02,150 INFO L481 AbstractCegarLoop]: Abstraction has 21179 states and 31625 transitions. [2018-10-23 22:54:02,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:54:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 21179 states and 31625 transitions. [2018-10-23 22:54:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-23 22:54:02,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:54:02,168 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:54:02,168 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:54:02,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:54:02,171 INFO L82 PathProgramCache]: Analyzing trace with hash -186406688, now seen corresponding path program 1 times [2018-10-23 22:54:02,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:54:02,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:54:02,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:54:02,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:54:02,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:54:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:54:02,495 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:54:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:54:02,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:54:02,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:54:02,620 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-23 22:54:02,623 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:54:02,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:54:02,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:54:06,008 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:54:06,010 INFO L272 AbstractInterpreter]: Visited 131 different actions 131 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:54:06,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:54:06,016 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:54:07,888 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.53% of their original sizes. [2018-10-23 22:54:07,888 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:54:08,133 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:54:08,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:54:08,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-23 22:54:08,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:54:08,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:54:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:54:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:54:08,136 INFO L87 Difference]: Start difference. First operand 21179 states and 31625 transitions. Second operand 7 states. [2018-10-23 22:54:12,172 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:55:41,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:55:41,859 INFO L93 Difference]: Finished difference Result 43057 states and 64090 transitions. [2018-10-23 22:55:41,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:55:41,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-10-23 22:55:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:55:41,961 INFO L225 Difference]: With dead ends: 43057 [2018-10-23 22:55:41,962 INFO L226 Difference]: Without dead ends: 21884 [2018-10-23 22:55:42,032 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:55:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21884 states. [2018-10-23 22:55:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21884 to 21882. [2018-10-23 22:55:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21882 states. [2018-10-23 22:55:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21882 states to 21882 states and 32340 transitions. [2018-10-23 22:55:42,611 INFO L78 Accepts]: Start accepts. Automaton has 21882 states and 32340 transitions. Word has length 222 [2018-10-23 22:55:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:55:42,611 INFO L481 AbstractCegarLoop]: Abstraction has 21882 states and 32340 transitions. [2018-10-23 22:55:42,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:55:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 21882 states and 32340 transitions. [2018-10-23 22:55:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-10-23 22:55:42,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:55:42,628 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:55:42,628 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:55:42,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:55:42,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1943607165, now seen corresponding path program 1 times [2018-10-23 22:55:42,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:55:42,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:55:42,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:55:42,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:55:42,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:55:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:55:43,398 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:55:43,642 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:55:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 116 proven. 202 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:55:44,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:55:44,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:55:44,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-10-23 22:55:44,106 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:55:44,116 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:55:44,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:55:56,129 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:55:56,129 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:55:56,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:55:56,137 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:56:00,461 INFO L232 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-23 22:56:00,462 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:56:31,405 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:56:31,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:56:31,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2018-10-23 22:56:31,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:56:31,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 22:56:31,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 22:56:31,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-10-23 22:56:31,408 INFO L87 Difference]: Start difference. First operand 21882 states and 32340 transitions. Second operand 20 states. Received shutdown request... [2018-10-23 22:56:58,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:56:58,771 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:56:58,776 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:56:58,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:56:58 BoogieIcfgContainer [2018-10-23 22:56:58,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:56:58,777 INFO L168 Benchmark]: Toolchain (without parser) took 227084.31 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 925.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:58,778 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-23 22:56:58,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1635.15 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:58,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 426.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:58,786 INFO L168 Benchmark]: Boogie Preprocessor took 220.14 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:58,788 INFO L168 Benchmark]: RCFGBuilder took 8364.64 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: 513.3 MB). Peak memory consumption was 513.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:58,791 INFO L168 Benchmark]: TraceAbstraction took 216433.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 424.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:56:58,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1635.15 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 426.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 220.14 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8364.64 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: 513.3 MB). Peak memory consumption was 513.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216433.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 424.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (21882states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (92 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 158.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2165 SDtfs, 9614 SDslu, 858 SDs, 0 SdLazy, 19943 SolverSat, 5197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 664 GetRequests, 568 SyntacticMatches, 51 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21882occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961147208589665 AbsIntWeakeningRatio, 0.09220985691573927 AbsIntAvgWeakeningVarsNumRemoved, 328.9284578696343 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 108 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 974 ConstructedInterpolants, 0 QuantifiedInterpolants, 1383912 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 221/488 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown