java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:15:20,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:15:20,735 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:15:20,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:15:20,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:15:20,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:15:20,754 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:15:20,756 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:15:20,759 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:15:20,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:15:20,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:15:20,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:15:20,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:15:20,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:15:20,766 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:15:20,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:15:20,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:15:20,769 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:15:20,771 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:15:20,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:15:20,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:15:20,775 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:15:20,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:15:20,786 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 23:15:20,805 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:15:20,806 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:15:20,809 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:15:20,810 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:15:20,810 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:15:20,810 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:15:20,810 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:15:20,810 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:15:20,811 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:15:20,811 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:15:20,811 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:15:20,811 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:15:20,815 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:15:20,815 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:15:20,815 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:15:20,816 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:15:20,816 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:15:20,816 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:15:20,816 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:15:20,816 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:15:20,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:15:20,818 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:15:20,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:15:20,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:15:20,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:15:20,819 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:15:20,819 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:15:20,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:15:20,820 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:15:20,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:15:20,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:15:20,820 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:15:20,820 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:15:20,821 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:15:20,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:15:20,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:15:20,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:15:20,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:15:20,890 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:15:20,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54_true-unreach-call_false-termination.c [2018-10-23 23:15:20,955 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86db619d4/7863b34f931f4298afe0303bb4399bbd/FLAG8cc5dff30 [2018-10-23 23:15:21,513 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:15:21,514 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label54_true-unreach-call_false-termination.c [2018-10-23 23:15:21,536 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86db619d4/7863b34f931f4298afe0303bb4399bbd/FLAG8cc5dff30 [2018-10-23 23:15:21,557 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86db619d4/7863b34f931f4298afe0303bb4399bbd [2018-10-23 23:15:21,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:15:21,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:15:21,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:15:21,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:15:21,577 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:15:21,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:15:21" (1/1) ... [2018-10-23 23:15:21,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307950ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:21, skipping insertion in model container [2018-10-23 23:15:21,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:15:21" (1/1) ... [2018-10-23 23:15:21,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:15:21,672 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:15:22,136 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:15:22,141 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:15:22,280 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:15:22,298 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:15:22,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22 WrapperNode [2018-10-23 23:15:22,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:15:22,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:15:22,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:15:22,300 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:15:22,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:15:22,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:15:22,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:15:22,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:15:22,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (1/1) ... [2018-10-23 23:15:22,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:15:22,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:15:22,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:15:22,609 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:15:22,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (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 23:15:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:15:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:15:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:15:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:15:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:15:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:15:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:15:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:15:25,894 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:15:25,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:15:25 BoogieIcfgContainer [2018-10-23 23:15:25,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:15:25,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:15:25,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:15:25,904 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:15:25,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:15:21" (1/3) ... [2018-10-23 23:15:25,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c82008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:15:25, skipping insertion in model container [2018-10-23 23:15:25,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:15:22" (2/3) ... [2018-10-23 23:15:25,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c82008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:15:25, skipping insertion in model container [2018-10-23 23:15:25,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:15:25" (3/3) ... [2018-10-23 23:15:25,909 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label54_true-unreach-call_false-termination.c [2018-10-23 23:15:25,919 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:15:25,934 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:15:25,952 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:15:25,995 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:15:25,996 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:15:25,996 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:15:25,996 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:15:25,996 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:15:25,997 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:15:25,997 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:15:25,997 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:15:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 23:15:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 23:15:26,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:15:26,040 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:15:26,042 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:15:26,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:26,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1112346027, now seen corresponding path program 1 times [2018-10-23 23:15:26,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:15:26,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:26,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:15:26,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:26,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:15:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:15:26,665 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:15:26,808 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 23:15:26,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:15:26,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:15:26,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:15:26,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:15:26,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:15:26,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:15:26,841 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 23:15:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:15:28,238 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 23:15:28,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:15:28,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-10-23 23:15:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:15:28,261 INFO L225 Difference]: With dead ends: 550 [2018-10-23 23:15:28,261 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 23:15:28,268 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 23:15:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 23:15:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 23:15:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 23:15:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 571 transitions. [2018-10-23 23:15:28,369 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 571 transitions. Word has length 129 [2018-10-23 23:15:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:15:28,370 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 571 transitions. [2018-10-23 23:15:28,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:15:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 571 transitions. [2018-10-23 23:15:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-23 23:15:28,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:15:28,388 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:15:28,389 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:15:28,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:28,389 INFO L82 PathProgramCache]: Analyzing trace with hash 167090318, now seen corresponding path program 1 times [2018-10-23 23:15:28,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:15:28,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:28,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:15:28,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:28,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:15:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:15:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:15:28,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:15:28,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:15:28,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:15:28,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:15:28,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:15:28,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:15:28,794 INFO L87 Difference]: Start difference. First operand 340 states and 571 transitions. Second operand 3 states. [2018-10-23 23:15:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:15:29,829 INFO L93 Difference]: Finished difference Result 946 states and 1655 transitions. [2018-10-23 23:15:29,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:15:29,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2018-10-23 23:15:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:15:29,836 INFO L225 Difference]: With dead ends: 946 [2018-10-23 23:15:29,836 INFO L226 Difference]: Without dead ends: 612 [2018-10-23 23:15:29,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:15:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2018-10-23 23:15:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2018-10-23 23:15:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2018-10-23 23:15:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 985 transitions. [2018-10-23 23:15:29,883 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 985 transitions. Word has length 147 [2018-10-23 23:15:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:15:29,884 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 985 transitions. [2018-10-23 23:15:29,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:15:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 985 transitions. [2018-10-23 23:15:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-23 23:15:29,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:15:29,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:29,890 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:15:29,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash 792982298, now seen corresponding path program 1 times [2018-10-23 23:15:29,891 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:15:29,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:29,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:15:29,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:29,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:15:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:15:30,162 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:15:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:15:30,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:15:30,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:15:30,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:15:30,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:15:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:15:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:15:30,352 INFO L87 Difference]: Start difference. First operand 612 states and 985 transitions. Second operand 6 states. [2018-10-23 23:15:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:15:32,714 INFO L93 Difference]: Finished difference Result 1816 states and 2955 transitions. [2018-10-23 23:15:32,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:15:32,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-10-23 23:15:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:15:32,724 INFO L225 Difference]: With dead ends: 1816 [2018-10-23 23:15:32,724 INFO L226 Difference]: Without dead ends: 1210 [2018-10-23 23:15:32,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:15:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2018-10-23 23:15:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1196. [2018-10-23 23:15:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2018-10-23 23:15:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1733 transitions. [2018-10-23 23:15:32,803 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1733 transitions. Word has length 174 [2018-10-23 23:15:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:15:32,803 INFO L481 AbstractCegarLoop]: Abstraction has 1196 states and 1733 transitions. [2018-10-23 23:15:32,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:15:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1733 transitions. [2018-10-23 23:15:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-23 23:15:32,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:15:32,811 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:32,813 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:15:32,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:32,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1874239161, now seen corresponding path program 1 times [2018-10-23 23:15:32,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:15:32,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:32,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:15:32,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:15:32,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:15:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:15:33,091 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:15:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:15:33,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:15:33,210 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:15:33,211 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-23 23:15:33,213 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [13], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [149], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [669], [671], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:15:33,279 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:15:33,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:15:42,833 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:15:42,835 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-23 23:15:42,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:15:42,845 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:15:45,828 INFO L232 lantSequenceWeakener]: Weakened 116 states. On average, predicates are now at 79.84% of their original sizes. [2018-10-23 23:15:45,829 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:15:47,220 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:15:47,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:15:47,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-23 23:15:47,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:15:47,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 23:15:47,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 23:15:47,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-23 23:15:47,223 INFO L87 Difference]: Start difference. First operand 1196 states and 1733 transitions. Second operand 12 states. [2018-10-23 23:16:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:16:03,690 INFO L93 Difference]: Finished difference Result 2447 states and 3571 transitions. [2018-10-23 23:16:03,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 23:16:03,690 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 185 [2018-10-23 23:16:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:16:03,697 INFO L225 Difference]: With dead ends: 2447 [2018-10-23 23:16:03,697 INFO L226 Difference]: Without dead ends: 1257 [2018-10-23 23:16:03,703 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-23 23:16:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2018-10-23 23:16:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2018-10-23 23:16:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1257 states. [2018-10-23 23:16:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1802 transitions. [2018-10-23 23:16:03,745 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1802 transitions. Word has length 185 [2018-10-23 23:16:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:16:03,745 INFO L481 AbstractCegarLoop]: Abstraction has 1257 states and 1802 transitions. [2018-10-23 23:16:03,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 23:16:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1802 transitions. [2018-10-23 23:16:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-23 23:16:03,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:16:03,752 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:03,752 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:16:03,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1542941171, now seen corresponding path program 1 times [2018-10-23 23:16:03,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:16:03,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:03,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:16:03,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:16:03,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:16:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:16:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:16:03,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:16:03,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:16:03,944 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-23 23:16:03,945 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [149], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [669], [671], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:16:03,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:16:03,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:16:41,687 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:16:41,688 INFO L272 AbstractInterpreter]: Visited 133 different actions 198 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 23:16:41,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:16:41,697 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:16:49,121 INFO L232 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 81.3% of their original sizes. [2018-10-23 23:16:49,121 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:18:52,666 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:18:52,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:18:52,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-23 23:18:52,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:18:52,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 23:18:52,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 23:18:52,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2018-10-23 23:18:52,669 INFO L87 Difference]: Start difference. First operand 1257 states and 1802 transitions. Second operand 22 states. Received shutdown request... [2018-10-23 23:19:42,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 23:19:42,978 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:19:42,985 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:19:42,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:19:42 BoogieIcfgContainer [2018-10-23 23:19:42,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:19:42,987 INFO L168 Benchmark]: Toolchain (without parser) took 261417.29 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -532.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:19:42,988 INFO L168 Benchmark]: CDTParser took 0.22 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 23:19:42,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:42,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.46 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:42,996 INFO L168 Benchmark]: Boogie Preprocessor took 111.31 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:19:42,997 INFO L168 Benchmark]: RCFGBuilder took 3287.68 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.3 MB). Peak memory consumption was 106.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:19:43,001 INFO L168 Benchmark]: TraceAbstraction took 257088.88 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 128.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:19:43,009 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 727.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 194.46 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.31 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3287.68 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.3 MB). Peak memory consumption was 106.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257088.88 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 128.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 542]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 542). Cancelled while BasicCegarLoop was constructing difference of abstraction (1257states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (34 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 257.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 71.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 779 SDtfs, 1187 SDslu, 523 SDs, 0 SdLazy, 2436 SolverSat, 504 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 403 GetRequests, 324 SyntacticMatches, 26 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 138.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1257occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995464402959942 AbsIntWeakeningRatio, 0.1897018970189702 AbsIntAvgWeakeningVarsNumRemoved, 1170.6639566395663 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 821 NumberOfCodeBlocks, 821 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 816 ConstructedInterpolants, 0 QuantifiedInterpolants, 340840 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 173/181 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown