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/Problem02_label00_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:16:28,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:16:28,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:16:28,693 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:16:28,694 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:16:28,695 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:16:28,696 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:16:28,698 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:16:28,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:16:28,701 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:16:28,702 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:16:28,702 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:16:28,703 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:16:28,704 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:16:28,706 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:16:28,706 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:16:28,707 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:16:28,709 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:16:28,711 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:16:28,713 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:16:28,714 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:16:28,715 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:16:28,718 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:16:28,725 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 23:16:28,725 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 23:16:28,726 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 23:16:28,727 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 23:16:28,727 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 23:16:28,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:16:28,759 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:16:28,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:16:28,761 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:16:28,761 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:16:28,761 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:16:28,762 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:16:28,762 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:16:28,762 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:16:28,762 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:16:28,762 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:16:28,762 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:16:28,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:16:28,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:16:28,764 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:16:28,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:16:28,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:16:28,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:16:28,765 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:16:28,766 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:16:28,766 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:16:28,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:16:28,766 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:16:28,766 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:16:28,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:16:28,768 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:16:28,768 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:16:28,768 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:16:28,768 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:16:28,769 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:16:28,769 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:16:28,769 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:16:28,769 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:16:28,769 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:16:28,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:16:28,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:16:28,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:16:28,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:16:28,838 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:16:28,840 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00_true-unreach-call_false-termination.c [2018-10-23 23:16:28,909 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/196e5d614/db59355f0386402eb244f8cf92bd3383/FLAG5b0ad8ee0 [2018-10-23 23:16:29,459 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:16:29,460 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label00_true-unreach-call_false-termination.c [2018-10-23 23:16:29,473 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/196e5d614/db59355f0386402eb244f8cf92bd3383/FLAG5b0ad8ee0 [2018-10-23 23:16:29,490 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/196e5d614/db59355f0386402eb244f8cf92bd3383 [2018-10-23 23:16:29,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:16:29,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:16:29,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:16:29,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:16:29,506 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:16:29,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:16:29" (1/1) ... [2018-10-23 23:16:29,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1b5aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:29, skipping insertion in model container [2018-10-23 23:16:29,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:16:29" (1/1) ... [2018-10-23 23:16:29,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:16:29,597 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:16:30,071 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:16:30,076 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:16:30,181 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:16:30,198 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:16:30,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30 WrapperNode [2018-10-23 23:16:30,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:16:30,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:16:30,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:16:30,200 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:16:30,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:16:30,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:16:30,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:16:30,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:16:30,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (1/1) ... [2018-10-23 23:16:30,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:16:30,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:16:30,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:16:30,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:16:30,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (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 23:16:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:16:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:16:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:16:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:16:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:16:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:16:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:16:30,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:16:33,773 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:16:33,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:16:33 BoogieIcfgContainer [2018-10-23 23:16:33,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:16:33,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:16:33,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:16:33,782 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:16:33,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:16:29" (1/3) ... [2018-10-23 23:16:33,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:16:33, skipping insertion in model container [2018-10-23 23:16:33,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:16:30" (2/3) ... [2018-10-23 23:16:33,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:16:33, skipping insertion in model container [2018-10-23 23:16:33,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:16:33" (3/3) ... [2018-10-23 23:16:33,788 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label00_true-unreach-call_false-termination.c [2018-10-23 23:16:33,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:16:33,810 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:16:33,831 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:16:33,881 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:16:33,881 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:16:33,881 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:16:33,882 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:16:33,882 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:16:33,882 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:16:33,883 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:16:33,883 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:16:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:16:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-23 23:16:33,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:16:33,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:33,949 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:16:33,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 117916544, now seen corresponding path program 1 times [2018-10-23 23:16:33,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:16:34,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:34,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:16:34,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:34,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:16:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:16:34,619 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:16:34,770 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 23:16:34,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:16:34,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:16:34,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:16:34,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:16:34,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:16:34,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:16:34,799 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:16:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:16:36,306 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-23 23:16:36,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:16:36,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2018-10-23 23:16:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:16:36,329 INFO L225 Difference]: With dead ends: 618 [2018-10-23 23:16:36,329 INFO L226 Difference]: Without dead ends: 379 [2018-10-23 23:16:36,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:16:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-23 23:16:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-23 23:16:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-23 23:16:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-23 23:16:36,420 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 122 [2018-10-23 23:16:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:16:36,422 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-23 23:16:36,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:16:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-23 23:16:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-23 23:16:36,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:16:36,431 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:16:36,431 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:16:36,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash -735277163, now seen corresponding path program 1 times [2018-10-23 23:16:36,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:16:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:36,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:16:36,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:36,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:16:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:16:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:16:36,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:16:36,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:16:36,655 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:16:36,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:16:36,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:16:36,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:16:36,658 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-23 23:16:39,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:16:39,110 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-10-23 23:16:39,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:16:39,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-23 23:16:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:16:39,141 INFO L225 Difference]: With dead ends: 1229 [2018-10-23 23:16:39,142 INFO L226 Difference]: Without dead ends: 856 [2018-10-23 23:16:39,153 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 [2018-10-23 23:16:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-10-23 23:16:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-10-23 23:16:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-23 23:16:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-10-23 23:16:39,224 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 138 [2018-10-23 23:16:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:16:39,224 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-10-23 23:16:39,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:16:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-10-23 23:16:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-23 23:16:39,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:16:39,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:39,233 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:16:39,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash 336904770, now seen corresponding path program 1 times [2018-10-23 23:16:39,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:16:39,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:39,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:16:39,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:39,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:16:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:16:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:16:39,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:16:39,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:16:39,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:16:39,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:16:39,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:16:39,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:16:39,576 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 5 states. [2018-10-23 23:16:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:16:42,855 INFO L93 Difference]: Finished difference Result 1778 states and 2834 transitions. [2018-10-23 23:16:42,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:16:42,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-10-23 23:16:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:16:42,868 INFO L225 Difference]: With dead ends: 1778 [2018-10-23 23:16:42,868 INFO L226 Difference]: Without dead ends: 813 [2018-10-23 23:16:42,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:16:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2018-10-23 23:16:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2018-10-23 23:16:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2018-10-23 23:16:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1260 transitions. [2018-10-23 23:16:42,937 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1260 transitions. Word has length 149 [2018-10-23 23:16:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:16:42,938 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1260 transitions. [2018-10-23 23:16:42,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:16:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1260 transitions. [2018-10-23 23:16:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-23 23:16:42,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:16:42,945 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:16:42,947 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:16:42,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:42,948 INFO L82 PathProgramCache]: Analyzing trace with hash 981001735, now seen corresponding path program 1 times [2018-10-23 23:16:42,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:16:42,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:42,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:16:42,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:42,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:16:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:16:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 23:16:43,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:16:43,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:16:43,331 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-23 23:16:43,333 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [225], [228], [232], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [647], [649], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:16:43,422 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:16:43,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:16:53,623 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:16:53,624 INFO L272 AbstractInterpreter]: Visited 123 different actions 123 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:16:53,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:53,633 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:16:57,197 INFO L232 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 81.24% of their original sizes. [2018-10-23 23:16:57,197 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:17:00,274 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:17:00,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:17:00,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-23 23:17:00,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:17:00,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:17:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:17:00,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:17:00,277 INFO L87 Difference]: Start difference. First operand 813 states and 1260 transitions. Second operand 13 states. [2018-10-23 23:19:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:00,346 INFO L93 Difference]: Finished difference Result 1920 states and 2965 transitions. [2018-10-23 23:19:00,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:19:00,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 190 [2018-10-23 23:19:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:00,352 INFO L225 Difference]: With dead ends: 1920 [2018-10-23 23:19:00,352 INFO L226 Difference]: Without dead ends: 1113 [2018-10-23 23:19:00,355 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:19:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2018-10-23 23:19:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 960. [2018-10-23 23:19:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2018-10-23 23:19:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1414 transitions. [2018-10-23 23:19:00,454 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1414 transitions. Word has length 190 [2018-10-23 23:19:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:00,454 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1414 transitions. [2018-10-23 23:19:00,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:19:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1414 transitions. [2018-10-23 23:19:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-23 23:19:00,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:00,459 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:00,460 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:00,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:00,460 INFO L82 PathProgramCache]: Analyzing trace with hash -473493464, now seen corresponding path program 1 times [2018-10-23 23:19:00,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:00,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:00,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:00,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:00,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:19:00,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:19:00,851 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:19:00,851 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-10-23 23:19:00,852 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [225], [228], [232], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [647], [649], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:19:00,858 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:19:00,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:20:02,932 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:20:02,933 INFO L272 AbstractInterpreter]: Visited 127 different actions 496 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:20:02,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:02,943 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:20:09,131 INFO L232 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 81.85% of their original sizes. [2018-10-23 23:20:09,132 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:20:45,630 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:20:45,634 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:20:45,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:20:45 BoogieIcfgContainer [2018-10-23 23:20:45,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:20:45,635 INFO L168 Benchmark]: Toolchain (without parser) took 256133.93 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -542.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 23:20:45,636 INFO L168 Benchmark]: CDTParser took 0.23 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 23:20:45,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.50 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:20:45,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 181.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:20:45,639 INFO L168 Benchmark]: Boogie Preprocessor took 106.10 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 23:20:45,639 INFO L168 Benchmark]: RCFGBuilder took 3283.33 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: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:20:45,640 INFO L168 Benchmark]: TraceAbstraction took 251859.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 133.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 23:20:45,645 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 696.50 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 181.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.10 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 3283.33 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: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251859.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 133.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 517]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 517). Cancelled while BasicCegarLoop was analyzing trace of length 201 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 251.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 127.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 619 SDtfs, 2841 SDslu, 789 SDs, 0 SdLazy, 3149 SolverSat, 616 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 223 GetRequests, 187 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 72.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952284758985785 AbsIntWeakeningRatio, 0.20618556701030927 AbsIntAvgWeakeningVarsNumRemoved, 1728.1134020618556 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 599 NumberOfCodeBlocks, 599 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 457754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 104/106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown