java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label26_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:39:50,816 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:39:50,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:39:50,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:39:50,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:39:50,836 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:39:50,837 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:39:50,839 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:39:50,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:39:50,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:39:50,844 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:39:50,844 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:39:50,845 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:39:50,846 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:39:50,847 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:39:50,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:39:50,851 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:39:50,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:39:50,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:39:50,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:39:50,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:39:50,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:39:50,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:39:50,869 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:39:50,884 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:39:50,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:39:50,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:39:50,885 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:39:50,886 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:39:50,886 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:39:50,886 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:39:50,886 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:39:50,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:39:50,887 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:39:50,887 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:39:50,887 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:39:50,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:39:50,888 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:39:50,888 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:39:50,888 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:39:50,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:39:50,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:39:50,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:39:50,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:39:50,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:39:50,889 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:39:50,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:39:50,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:39:50,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:39:50,890 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:39:50,890 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:39:50,890 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:39:50,891 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:39:50,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:39:50,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:39:50,891 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:39:50,891 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:39:50,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:39:50,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:39:50,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:39:50,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:39:50,952 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:39:50,953 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:39:50,953 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label26_true-unreach-call_false-termination.c [2018-10-24 21:39:51,018 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/952d97a5e/01be999e285547e8a6db44e7068d7f67/FLAGf07ae895a [2018-10-24 21:39:51,635 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:39:51,636 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label26_true-unreach-call_false-termination.c [2018-10-24 21:39:51,659 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/952d97a5e/01be999e285547e8a6db44e7068d7f67/FLAGf07ae895a [2018-10-24 21:39:51,678 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/952d97a5e/01be999e285547e8a6db44e7068d7f67 [2018-10-24 21:39:51,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:39:51,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:39:51,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:39:51,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:39:51,698 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:39:51,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:39:51" (1/1) ... [2018-10-24 21:39:51,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a61b580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:51, skipping insertion in model container [2018-10-24 21:39:51,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:39:51" (1/1) ... [2018-10-24 21:39:51,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:39:51,805 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:39:52,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:39:52,410 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:39:52,553 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:39:52,578 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:39:52,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52 WrapperNode [2018-10-24 21:39:52,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:39:52,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:39:52,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:39:52,581 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:39:52,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:39:52,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:39:52,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:39:52,803 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:39:52,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... [2018-10-24 21:39:52,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:39:52,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:39:52,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:39:52,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:39:52,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:39:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:39:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:39:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:39:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:39:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:39:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:39:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:39:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:39:56,662 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:39:56,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:39:56 BoogieIcfgContainer [2018-10-24 21:39:56,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:39:56,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:39:56,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:39:56,670 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:39:56,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:39:51" (1/3) ... [2018-10-24 21:39:56,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ead59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:39:56, skipping insertion in model container [2018-10-24 21:39:56,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:52" (2/3) ... [2018-10-24 21:39:56,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ead59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:39:56, skipping insertion in model container [2018-10-24 21:39:56,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:39:56" (3/3) ... [2018-10-24 21:39:56,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label26_true-unreach-call_false-termination.c [2018-10-24 21:39:56,686 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:39:56,701 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:39:56,722 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:39:56,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:39:56,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:39:56,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:39:56,776 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:39:56,776 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:39:56,776 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:39:56,776 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:39:56,776 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:39:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:39:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-24 21:39:56,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:56,818 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] [2018-10-24 21:39:56,821 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:56,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:56,827 INFO L82 PathProgramCache]: Analyzing trace with hash -68379495, now seen corresponding path program 1 times [2018-10-24 21:39:56,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:56,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:56,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:56,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:56,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:57,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:57,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:39:57,379 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:57,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:39:57,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:39:57,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:39:57,408 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:39:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:59,261 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:39:59,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:39:59,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-24 21:39:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:59,285 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:39:59,285 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:39:59,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:39:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:39:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:39:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:39:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-24 21:39:59,376 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 73 [2018-10-24 21:39:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:59,377 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-24 21:39:59,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:39:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-24 21:39:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-24 21:39:59,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:59,388 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:39:59,388 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:59,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:59,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1913376731, now seen corresponding path program 1 times [2018-10-24 21:39:59,389 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:59,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:59,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:59,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:59,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:59,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:59,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:39:59,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:59,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:39:59,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:39:59,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:39:59,775 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-24 21:40:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:04,551 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-24 21:40:04,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:40:04,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-10-24 21:40:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:04,565 INFO L225 Difference]: With dead ends: 1416 [2018-10-24 21:40:04,565 INFO L226 Difference]: Without dead ends: 988 [2018-10-24 21:40:04,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:40:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-24 21:40:04,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-24 21:40:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-24 21:40:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-24 21:40:04,638 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 150 [2018-10-24 21:40:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:04,639 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-24 21:40:04,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:40:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-24 21:40:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 21:40:04,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:04,651 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:40:04,652 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:04,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:04,652 INFO L82 PathProgramCache]: Analyzing trace with hash -122514341, now seen corresponding path program 1 times [2018-10-24 21:40:04,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:04,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:04,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:04,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:04,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:40:05,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:40:05,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:40:05,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:40:05,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:40:05,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:40:05,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:40:05,054 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-24 21:40:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:08,962 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-24 21:40:08,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:40:08,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2018-10-24 21:40:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:08,975 INFO L225 Difference]: With dead ends: 2353 [2018-10-24 21:40:08,975 INFO L226 Difference]: Without dead ends: 1386 [2018-10-24 21:40:08,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:40:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-24 21:40:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-24 21:40:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 21:40:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-24 21:40:09,040 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 214 [2018-10-24 21:40:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:09,040 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-24 21:40:09,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:40:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-24 21:40:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-24 21:40:09,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:09,047 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:40:09,048 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:09,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:09,048 INFO L82 PathProgramCache]: Analyzing trace with hash 16654436, now seen corresponding path program 1 times [2018-10-24 21:40:09,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:09,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:09,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:09,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:09,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:40:09,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:40:09,567 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:40:09,568 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-10-24 21:40:09,570 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:40:09,642 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:40:09,642 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:40:11,934 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:40:11,936 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:40:11,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:11,964 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:40:14,075 INFO L232 lantSequenceWeakener]: Weakened 226 states. On average, predicates are now at 78.47% of their original sizes. [2018-10-24 21:40:14,075 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:40:14,473 INFO L413 sIntCurrentIteration]: We have 233 unified AI predicates [2018-10-24 21:40:14,473 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:40:14,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:40:14,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:40:14,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:40:14,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:40:14,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:40:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:40:14,480 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-24 21:40:16,754 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:40:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:29,315 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-24 21:40:29,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:40:29,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2018-10-24 21:40:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:29,325 INFO L225 Difference]: With dead ends: 2883 [2018-10-24 21:40:29,326 INFO L226 Difference]: Without dead ends: 1537 [2018-10-24 21:40:29,332 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:40:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-24 21:40:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-24 21:40:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-24 21:40:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-24 21:40:29,388 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 234 [2018-10-24 21:40:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:29,389 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-24 21:40:29,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:40:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-24 21:40:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-24 21:40:29,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:29,398 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:40:29,398 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:29,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 143734482, now seen corresponding path program 1 times [2018-10-24 21:40:29,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:29,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:29,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:29,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:29,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 285 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:40:30,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:40:30,308 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:40:30,308 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-10-24 21:40:30,309 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:40:30,315 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:40:30,316 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:40:34,168 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:40:34,168 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:40:34,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:34,208 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:40:37,787 INFO L232 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 77.88% of their original sizes. [2018-10-24 21:40:37,788 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:41:13,487 INFO L413 sIntCurrentIteration]: We have 318 unified AI predicates [2018-10-24 21:41:13,488 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:41:13,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:41:13,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-24 21:41:13,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:13,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 21:41:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 21:41:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-10-24 21:41:13,491 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 19 states. [2018-10-24 21:42:21,723 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:43:57,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:43:57,727 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:43:57,732 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:43:57,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:43:57 BoogieIcfgContainer [2018-10-24 21:43:57,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:43:57,733 INFO L168 Benchmark]: Toolchain (without parser) took 246042.29 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:43:57,735 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:43:57,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 886.40 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:57,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.75 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -811.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:57,737 INFO L168 Benchmark]: Boogie Preprocessor took 132.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:57,738 INFO L168 Benchmark]: RCFGBuilder took 3728.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:57,739 INFO L168 Benchmark]: TraceAbstraction took 241066.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -902.5 MB). Peak memory consumption was 971.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:57,744 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 886.40 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.75 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -811.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3728.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241066.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -902.5 MB). Peak memory consumption was 971.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 202]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 202). Cancelled while BasicCegarLoop was constructing difference of abstraction (1535states) and FLOYD_HOARE automaton (currently 18 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (2432 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 240.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 189.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 665 SDtfs, 4981 SDslu, 576 SDs, 0 SdLazy, 6131 SolverSat, 1080 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 582 GetRequests, 496 SyntacticMatches, 43 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 37.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1535occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955647176411795 AbsIntWeakeningRatio, 0.10526315789473684 AbsIntAvgWeakeningVarsNumRemoved, 552.3430127041743 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 990 NumberOfCodeBlocks, 990 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 985 ConstructedInterpolants, 0 QuantifiedInterpolants, 1597169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 629/777 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown