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_label35_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:25:52,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:25:52,370 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:25:52,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:25:52,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:25:52,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:25:52,384 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:25:52,386 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:25:52,387 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:25:52,388 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:25:52,389 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:25:52,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:25:52,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:25:52,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:25:52,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:25:52,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:25:52,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:25:52,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:25:52,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:25:52,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:25:52,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:25:52,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:25:52,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:25:52,415 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 23:25:52,430 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:25:52,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:25:52,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:25:52,432 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:25:52,432 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:25:52,432 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:25:52,432 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:25:52,433 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:25:52,433 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:25:52,433 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:25:52,433 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:25:52,433 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:25:52,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:25:52,434 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:25:52,434 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:25:52,435 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:25:52,435 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:25:52,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:25:52,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:25:52,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:25:52,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:25:52,436 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:25:52,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:25:52,436 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:25:52,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:25:52,437 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:25:52,437 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:25:52,437 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:25:52,437 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:25:52,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:25:52,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:25:52,438 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:25:52,438 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:25:52,438 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:25:52,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:25:52,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:25:52,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:25:52,515 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:25:52,516 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:25:52,516 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35_true-unreach-call_false-termination.c [2018-10-23 23:25:52,581 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da6950a39/48d84743cd2f478a8086c2630fe4ace5/FLAGa56363134 [2018-10-23 23:25:53,176 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:25:53,177 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label35_true-unreach-call_false-termination.c [2018-10-23 23:25:53,203 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da6950a39/48d84743cd2f478a8086c2630fe4ace5/FLAGa56363134 [2018-10-23 23:25:53,222 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da6950a39/48d84743cd2f478a8086c2630fe4ace5 [2018-10-23 23:25:53,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:25:53,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:25:53,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:25:53,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:25:53,242 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:25:53,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:25:53" (1/1) ... [2018-10-23 23:25:53,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4145bbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:53, skipping insertion in model container [2018-10-23 23:25:53,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:25:53" (1/1) ... [2018-10-23 23:25:53,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:25:53,336 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:25:53,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:25:53,855 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:25:53,991 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:25:54,011 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:25:54,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54 WrapperNode [2018-10-23 23:25:54,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:25:54,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:25:54,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:25:54,013 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:25:54,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:25:54,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:25:54,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:25:54,193 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:25:54,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (1/1) ... [2018-10-23 23:25:54,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:25:54,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:25:54,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:25:54,266 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:25:54,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (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 23:25:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:25:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:25:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:25:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:25:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:25:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:25:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:25:54,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:25:57,545 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:25:57,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:25:57 BoogieIcfgContainer [2018-10-23 23:25:57,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:25:57,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:25:57,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:25:57,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:25:57,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:25:53" (1/3) ... [2018-10-23 23:25:57,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e26baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:25:57, skipping insertion in model container [2018-10-23 23:25:57,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:25:54" (2/3) ... [2018-10-23 23:25:57,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e26baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:25:57, skipping insertion in model container [2018-10-23 23:25:57,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:25:57" (3/3) ... [2018-10-23 23:25:57,560 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label35_true-unreach-call_false-termination.c [2018-10-23 23:25:57,572 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:25:57,586 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:25:57,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:25:57,661 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:25:57,661 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:25:57,662 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:25:57,662 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:25:57,662 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:25:57,663 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:25:57,663 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:25:57,663 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:25:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:25:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 23:25:57,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:25:57,724 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] [2018-10-23 23:25:57,727 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:25:57,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:25:57,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1054680041, now seen corresponding path program 1 times [2018-10-23 23:25:57,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:25:57,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:25:57,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:25:57,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:25:57,788 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:25:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:25:58,405 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:25:58,643 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 23:25:58,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:25:58,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:25:58,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:25:58,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:25:58,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:25:58,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:25:58,677 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:26:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:00,366 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-10-23 23:26:00,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:26:00,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2018-10-23 23:26:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:00,392 INFO L225 Difference]: With dead ends: 627 [2018-10-23 23:26:00,392 INFO L226 Difference]: Without dead ends: 388 [2018-10-23 23:26:00,399 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 23:26:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-23 23:26:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-10-23 23:26:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-23 23:26:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-10-23 23:26:00,481 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 101 [2018-10-23 23:26:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:00,483 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-10-23 23:26:00,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:26:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-10-23 23:26:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 23:26:00,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:00,491 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:26:00,492 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:00,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1791654186, now seen corresponding path program 1 times [2018-10-23 23:26:00,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:00,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:00,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:00,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:00,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:00,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:00,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:26:00,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:00,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:26:00,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:26:00,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:26:00,772 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 3 states. [2018-10-23 23:26:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:02,218 INFO L93 Difference]: Finished difference Result 1053 states and 1768 transitions. [2018-10-23 23:26:02,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:26:02,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2018-10-23 23:26:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:02,229 INFO L225 Difference]: With dead ends: 1053 [2018-10-23 23:26:02,229 INFO L226 Difference]: Without dead ends: 676 [2018-10-23 23:26:02,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:26:02,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2018-10-23 23:26:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2018-10-23 23:26:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-23 23:26:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1011 transitions. [2018-10-23 23:26:02,286 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1011 transitions. Word has length 110 [2018-10-23 23:26:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:02,287 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1011 transitions. [2018-10-23 23:26:02,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:26:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1011 transitions. [2018-10-23 23:26:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 23:26:02,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:02,294 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:26:02,294 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:02,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1883976414, now seen corresponding path program 1 times [2018-10-23 23:26:02,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:02,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:02,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:02,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:02,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:02,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:26:02,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:02,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:26:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:26:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:26:02,486 INFO L87 Difference]: Start difference. First operand 676 states and 1011 transitions. Second operand 3 states. [2018-10-23 23:26:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:04,302 INFO L93 Difference]: Finished difference Result 1926 states and 2979 transitions. [2018-10-23 23:26:04,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:26:04,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-10-23 23:26:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:04,320 INFO L225 Difference]: With dead ends: 1926 [2018-10-23 23:26:04,320 INFO L226 Difference]: Without dead ends: 1256 [2018-10-23 23:26:04,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:26:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2018-10-23 23:26:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1256. [2018-10-23 23:26:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2018-10-23 23:26:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1828 transitions. [2018-10-23 23:26:04,422 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1828 transitions. Word has length 115 [2018-10-23 23:26:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:04,423 INFO L481 AbstractCegarLoop]: Abstraction has 1256 states and 1828 transitions. [2018-10-23 23:26:04,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:26:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1828 transitions. [2018-10-23 23:26:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-23 23:26:04,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:04,436 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:04,438 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:04,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash -737815760, now seen corresponding path program 1 times [2018-10-23 23:26:04,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:04,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:04,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:04,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:04,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:04,732 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:26:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:26:04,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:26:04,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:26:04,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-10-23 23:26:04,948 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [56], [59], [63], [64], [68], [72], [76], [79], [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], [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], [479], [481], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:26:05,027 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:26:05,028 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:26:15,126 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:26:15,128 INFO L272 AbstractInterpreter]: Visited 102 different actions 102 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:26:15,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:15,144 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:26:18,875 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 81.01% of their original sizes. [2018-10-23 23:26:18,875 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:26:22,360 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:26:22,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:26:22,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-23 23:26:22,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:22,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:26:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:26:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:26:22,363 INFO L87 Difference]: Start difference. First operand 1256 states and 1828 transitions. Second operand 13 states. [2018-10-23 23:27:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:27:59,555 INFO L93 Difference]: Finished difference Result 2806 states and 4098 transitions. [2018-10-23 23:27:59,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:27:59,555 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 147 [2018-10-23 23:27:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:27:59,565 INFO L225 Difference]: With dead ends: 2806 [2018-10-23 23:27:59,566 INFO L226 Difference]: Without dead ends: 1556 [2018-10-23 23:27:59,571 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 157 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:27:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-23 23:27:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1403. [2018-10-23 23:27:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2018-10-23 23:27:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1989 transitions. [2018-10-23 23:27:59,762 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1989 transitions. Word has length 147 [2018-10-23 23:27:59,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:27:59,762 INFO L481 AbstractCegarLoop]: Abstraction has 1403 states and 1989 transitions. [2018-10-23 23:27:59,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:27:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1989 transitions. [2018-10-23 23:27:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-23 23:27:59,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:27:59,769 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:59,770 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:27:59,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:59,770 INFO L82 PathProgramCache]: Analyzing trace with hash 408540226, now seen corresponding path program 1 times [2018-10-23 23:27:59,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:27:59,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:59,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:27:59,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:59,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:27:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 46 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:00,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:28:00,176 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:28:00,177 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 153 with the following transitions: [2018-10-23 23:28:00,177 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [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], [479], [481], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:28:00,183 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:28:00,184 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:28:42,989 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:28:42,989 INFO L272 AbstractInterpreter]: Visited 105 different actions 307 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:28:43,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:43,000 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:28:49,025 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 84.72% of their original sizes. [2018-10-23 23:28:49,026 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:30:08,379 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:30:08,384 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:30:08,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:30:08 BoogieIcfgContainer [2018-10-23 23:30:08,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:30:08,388 INFO L168 Benchmark]: Toolchain (without parser) took 255152.87 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 23:30:08,390 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:30:08,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:08,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.90 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 682.6 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -779.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:08,395 INFO L168 Benchmark]: Boogie Preprocessor took 71.36 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:30:08,395 INFO L168 Benchmark]: RCFGBuilder took 3284.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:08,396 INFO L168 Benchmark]: TraceAbstraction took 250834.40 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -535.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 23:30:08,403 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.90 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 682.6 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -779.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.36 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3284.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250834.40 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -535.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 454]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 454). Cancelled while BasicCegarLoop was analyzing trace of length 153 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 250.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 102.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 946 SDtfs, 1330 SDslu, 423 SDs, 0 SdLazy, 1852 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 170 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1403occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 53.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9942143100037835 AbsIntWeakeningRatio, 0.2255892255892256 AbsIntAvgWeakeningVarsNumRemoved, 1502.8989898989898 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 158 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 147397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 60/75 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown