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/Problem01_label38_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:11:46,769 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:11:46,771 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:11:46,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:11:46,783 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:11:46,785 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:11:46,786 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:11:46,788 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:11:46,790 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:11:46,791 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:11:46,792 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:11:46,793 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:11:46,794 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:11:46,795 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:11:46,796 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:11:46,797 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:11:46,798 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:11:46,800 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:11:46,802 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:11:46,804 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:11:46,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:11:46,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:11:46,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:11:46,820 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 21:11:46,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:11:46,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:11:46,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:11:46,849 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 21:11:46,849 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 21:11:46,849 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 21:11:46,850 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 21:11:46,850 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 21:11:46,850 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 21:11:46,850 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 21:11:46,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 21:11:46,851 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 21:11:46,852 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:11:46,852 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:11:46,853 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:11:46,853 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:11:46,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:11:46,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:11:46,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:11:46,855 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:11:46,855 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:11:46,855 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:11:46,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:11:46,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:11:46,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:11:46,856 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:11:46,856 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:11:46,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:11:46,856 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 21:11:46,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:11:46,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:11:46,858 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:11:46,858 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:11:46,858 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 21:11:46,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:11:46,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:11:46,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:11:46,935 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:11:46,935 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:11:46,936 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38_false-unreach-call_false-termination.c [2018-10-23 21:11:47,018 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/becea61ae/b6a487da29f14a5ca46e550c3b97be94/FLAG074af3dc4 [2018-10-23 21:11:47,636 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:11:47,640 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label38_false-unreach-call_false-termination.c [2018-10-23 21:11:47,670 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/becea61ae/b6a487da29f14a5ca46e550c3b97be94/FLAG074af3dc4 [2018-10-23 21:11:47,695 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/becea61ae/b6a487da29f14a5ca46e550c3b97be94 [2018-10-23 21:11:47,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:11:47,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:11:47,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:11:47,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:11:47,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:11:47,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:47" (1/1) ... [2018-10-23 21:11:47,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3502ec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:47, skipping insertion in model container [2018-10-23 21:11:47,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:47" (1/1) ... [2018-10-23 21:11:47,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:11:47,818 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:11:48,330 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:11:48,336 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:11:48,455 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:11:48,475 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:11:48,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48 WrapperNode [2018-10-23 21:11:48,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:11:48,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:11:48,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:11:48,477 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:11:48,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:11:48,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:11:48,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:11:48,658 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:11:48,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:11:48,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:11:48,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:11:48,756 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:11:48,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (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 21:11:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 21:11:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 21:11:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 21:11:48,835 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 21:11:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:11:48,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:11:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 21:11:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 21:11:52,488 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:11:52,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:52 BoogieIcfgContainer [2018-10-23 21:11:52,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:11:52,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:11:52,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:11:52,494 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:11:52,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:11:47" (1/3) ... [2018-10-23 21:11:52,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738abde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:52, skipping insertion in model container [2018-10-23 21:11:52,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (2/3) ... [2018-10-23 21:11:52,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738abde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:52, skipping insertion in model container [2018-10-23 21:11:52,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:52" (3/3) ... [2018-10-23 21:11:52,498 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label38_false-unreach-call_false-termination.c [2018-10-23 21:11:52,511 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:11:52,527 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:11:52,545 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:11:52,585 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:11:52,586 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:11:52,586 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:11:52,586 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:11:52,586 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:11:52,586 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:11:52,586 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:11:52,586 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:11:52,612 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 21:11:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-23 21:11:52,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:52,625 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:11:52,627 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:52,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1847189963, now seen corresponding path program 1 times [2018-10-23 21:11:52,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:52,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:52,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:52,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:52,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:53,227 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:11:53,333 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 21:11:53,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:53,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:11:53,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:53,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:11:53,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:11:53,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:53,361 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 21:11:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:54,948 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 21:11:54,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:11:54,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2018-10-23 21:11:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:54,971 INFO L225 Difference]: With dead ends: 550 [2018-10-23 21:11:54,972 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 21:11:54,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 21:11:55,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 21:11:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 21:11:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 21:11:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-10-23 21:11:55,085 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 89 [2018-10-23 21:11:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:55,087 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-10-23 21:11:55,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:11:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-10-23 21:11:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-23 21:11:55,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:55,093 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:55,094 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:55,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2082280758, now seen corresponding path program 1 times [2018-10-23 21:11:55,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:55,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:55,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:55,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:55,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:55,347 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:11:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:55,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:55,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:11:55,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:55,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:11:55,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:11:55,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:11:55,534 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-10-23 21:11:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:57,529 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-10-23 21:11:57,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:11:57,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-23 21:11:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:57,548 INFO L225 Difference]: With dead ends: 1075 [2018-10-23 21:11:57,549 INFO L226 Difference]: Without dead ends: 741 [2018-10-23 21:11:57,556 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 [2018-10-23 21:11:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-23 21:11:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-10-23 21:11:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-23 21:11:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-10-23 21:11:57,617 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 100 [2018-10-23 21:11:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:57,617 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-10-23 21:11:57,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:11:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-10-23 21:11:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 21:11:57,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:57,626 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:57,626 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:57,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:57,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1252519582, now seen corresponding path program 1 times [2018-10-23 21:11:57,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:57,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:57,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:57,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:57,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:57,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:57,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:11:57,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:57,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:11:57,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:11:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:57,836 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 3 states. [2018-10-23 21:11:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:59,648 INFO L93 Difference]: Finished difference Result 2065 states and 3370 transitions. [2018-10-23 21:11:59,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:11:59,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2018-10-23 21:11:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:59,666 INFO L225 Difference]: With dead ends: 2065 [2018-10-23 21:11:59,666 INFO L226 Difference]: Without dead ends: 1347 [2018-10-23 21:11:59,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2018-10-23 21:11:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1346. [2018-10-23 21:11:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1346 states. [2018-10-23 21:11:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1974 transitions. [2018-10-23 21:11:59,756 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1974 transitions. Word has length 101 [2018-10-23 21:11:59,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:59,757 INFO L481 AbstractCegarLoop]: Abstraction has 1346 states and 1974 transitions. [2018-10-23 21:11:59,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:11:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1974 transitions. [2018-10-23 21:11:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 21:11:59,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:59,767 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:59,768 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:59,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1570299834, now seen corresponding path program 1 times [2018-10-23 21:11:59,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:59,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:59,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:59,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:59,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:00,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:12:00,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:12:00,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:12:00,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:12:00,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:12:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:12:00,025 INFO L87 Difference]: Start difference. First operand 1346 states and 1974 transitions. Second operand 3 states. [2018-10-23 21:12:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:01,551 INFO L93 Difference]: Finished difference Result 3743 states and 5585 transitions. [2018-10-23 21:12:01,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:12:01,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-10-23 21:12:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:01,571 INFO L225 Difference]: With dead ends: 3743 [2018-10-23 21:12:01,571 INFO L226 Difference]: Without dead ends: 2403 [2018-10-23 21:12:01,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:12:01,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2018-10-23 21:12:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2390. [2018-10-23 21:12:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2018-10-23 21:12:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3324 transitions. [2018-10-23 21:12:01,659 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3324 transitions. Word has length 102 [2018-10-23 21:12:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:01,660 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states and 3324 transitions. [2018-10-23 21:12:01,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:12:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3324 transitions. [2018-10-23 21:12:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-23 21:12:01,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:01,668 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:01,668 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:01,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash 256573878, now seen corresponding path program 1 times [2018-10-23 21:12:01,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:01,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:01,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:01,996 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-23 21:12:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:02,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:12:02,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 21:12:02,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:12:02,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:12:02,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:12:02,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:12:02,115 INFO L87 Difference]: Start difference. First operand 2390 states and 3324 transitions. Second operand 7 states. [2018-10-23 21:12:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:03,995 INFO L93 Difference]: Finished difference Result 5792 states and 8158 transitions. [2018-10-23 21:12:03,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 21:12:03,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2018-10-23 21:12:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:04,021 INFO L225 Difference]: With dead ends: 5792 [2018-10-23 21:12:04,022 INFO L226 Difference]: Without dead ends: 3074 [2018-10-23 21:12:04,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-23 21:12:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2018-10-23 21:12:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3042. [2018-10-23 21:12:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2018-10-23 21:12:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 3993 transitions. [2018-10-23 21:12:04,142 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 3993 transitions. Word has length 143 [2018-10-23 21:12:04,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:04,142 INFO L481 AbstractCegarLoop]: Abstraction has 3042 states and 3993 transitions. [2018-10-23 21:12:04,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:12:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 3993 transitions. [2018-10-23 21:12:04,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 21:12:04,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:04,152 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:12:04,152 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:04,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash -457461469, now seen corresponding path program 1 times [2018-10-23 21:12:04,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:04,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:04,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:04,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:04,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:04,758 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 21:12:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:04,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:12:04,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:12:04,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-10-23 21:12:04,824 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [185], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 21:12:04,911 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:12:04,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:12:44,096 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:12:44,098 INFO L272 AbstractInterpreter]: Visited 93 different actions 158 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 21:12:44,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:44,120 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:12:52,439 INFO L232 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 80.56% of their original sizes. [2018-10-23 21:12:52,440 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:13:48,107 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:13:48,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:13:48,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-23 21:13:48,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:13:48,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 21:13:48,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 21:13:48,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-10-23 21:13:48,110 INFO L87 Difference]: Start difference. First operand 3042 states and 3993 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 21:15:58,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 21:15:58,907 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:15:58,913 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:15:58,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:15:58 BoogieIcfgContainer [2018-10-23 21:15:58,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:15:58,914 INFO L168 Benchmark]: Toolchain (without parser) took 251203.72 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.4 MB). Peak memory consumption was 482.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:58,915 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:15:58,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:58,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 180.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:58,918 INFO L168 Benchmark]: Boogie Preprocessor took 94.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:15:58,918 INFO L168 Benchmark]: RCFGBuilder took 3736.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:58,919 INFO L168 Benchmark]: TraceAbstraction took 246422.96 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 543.7 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -133.8 MB). Peak memory consumption was 409.8 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:58,928 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 762.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 180.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3736.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246422.96 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 543.7 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -133.8 MB). Peak memory consumption was 409.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 422]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 422). Cancelled while BasicCegarLoop was constructing difference of abstraction (3042states) and FLOYD_HOARE automaton (currently 21 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (419 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 246.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 139.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 756 SDtfs, 2224 SDslu, 368 SDs, 0 SdLazy, 3502 SolverSat, 834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 200 GetRequests, 146 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 69.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3042occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9942531336259559 AbsIntWeakeningRatio, 0.22727272727272727 AbsIntAvgWeakeningVarsNumRemoved, 158.2077922077922 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 63 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 690 NumberOfCodeBlocks, 690 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 383340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 148/150 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown