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_label36_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:30:17,693 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:30:17,695 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:30:17,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:30:17,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:30:17,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:30:17,711 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:30:17,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:30:17,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:30:17,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:30:17,716 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:30:17,716 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:30:17,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:30:17,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:30:17,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:30:17,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:30:17,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:30:17,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:30:17,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:30:17,726 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:30:17,727 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:30:17,728 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:30:17,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:30:17,740 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:30:17,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:30:17,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:30:17,771 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:30:17,771 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:30:17,771 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:30:17,771 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:30:17,772 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:30:17,774 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:30:17,774 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:30:17,774 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:30:17,774 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:30:17,775 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:30:17,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:30:17,776 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:30:17,776 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:30:17,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:30:17,776 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:30:17,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:30:17,777 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:30:17,777 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:30:17,777 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:30:17,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:30:17,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:30:17,778 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:30:17,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:30:17,780 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:30:17,780 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:30:17,781 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:30:17,781 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:30:17,781 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:30:17,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:30:17,781 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:30:17,781 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:30:17,782 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:30:17,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:30:17,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:30:17,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:30:17,869 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:30:17,869 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:30:17,870 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36_true-unreach-call_false-termination.c [2018-10-24 19:30:17,940 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/081694fde/5fdbd4f17ff241f38639020f9ca9557a/FLAG34faefa81 [2018-10-24 19:30:18,576 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:30:18,577 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label36_true-unreach-call_false-termination.c [2018-10-24 19:30:18,598 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/081694fde/5fdbd4f17ff241f38639020f9ca9557a/FLAG34faefa81 [2018-10-24 19:30:18,620 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/081694fde/5fdbd4f17ff241f38639020f9ca9557a [2018-10-24 19:30:18,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:30:18,638 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:30:18,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:30:18,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:30:18,643 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:30:18,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:30:18" (1/1) ... [2018-10-24 19:30:18,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:18, skipping insertion in model container [2018-10-24 19:30:18,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:30:18" (1/1) ... [2018-10-24 19:30:18,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:30:18,710 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:30:19,156 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:30:19,161 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:30:19,298 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:30:19,319 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:30:19,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19 WrapperNode [2018-10-24 19:30:19,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:30:19,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:30:19,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:30:19,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:30:19,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:30:19,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:30:19,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:30:19,516 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:30:19,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... [2018-10-24 19:30:19,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:30:19,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:30:19,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:30:19,607 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:30:19,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:30:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:30:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:30:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:30:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:30:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:30:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:30:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:30:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:30:23,238 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:30:23,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:30:23 BoogieIcfgContainer [2018-10-24 19:30:23,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:30:23,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:30:23,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:30:23,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:30:23,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:30:18" (1/3) ... [2018-10-24 19:30:23,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417f998a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:30:23, skipping insertion in model container [2018-10-24 19:30:23,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:30:19" (2/3) ... [2018-10-24 19:30:23,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417f998a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:30:23, skipping insertion in model container [2018-10-24 19:30:23,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:30:23" (3/3) ... [2018-10-24 19:30:23,248 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label36_true-unreach-call_false-termination.c [2018-10-24 19:30:23,259 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:30:23,269 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:30:23,287 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:30:23,327 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:30:23,327 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:30:23,327 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:30:23,328 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:30:23,328 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:30:23,328 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:30:23,328 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:30:23,329 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:30:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:30:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 19:30:23,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:23,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:30:23,377 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:23,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:23,384 INFO L82 PathProgramCache]: Analyzing trace with hash -887392241, now seen corresponding path program 1 times [2018-10-24 19:30:23,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:23,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:23,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:23,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:23,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:24,043 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:30:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:30:24,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:30:24,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:30:24,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:24,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:30:24,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:30:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:30:24,235 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:30:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:30:25,846 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:30:25,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:30:25,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2018-10-24 19:30:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:30:25,868 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:30:25,868 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:30:25,875 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 [2018-10-24 19:30:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:30:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:30:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:30:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:30:25,960 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 139 [2018-10-24 19:30:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:30:25,961 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:30:25,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:30:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:30:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 19:30:25,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:25,971 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:30:25,971 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:25,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1146144614, now seen corresponding path program 1 times [2018-10-24 19:30:25,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:25,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:25,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:25,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:25,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:30:26,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:30:26,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:30:26,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:26,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:30:26,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:30:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:30:26,197 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:30:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:30:28,348 INFO L93 Difference]: Finished difference Result 1231 states and 2094 transitions. [2018-10-24 19:30:28,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:30:28,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-24 19:30:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:30:28,368 INFO L225 Difference]: With dead ends: 1231 [2018-10-24 19:30:28,368 INFO L226 Difference]: Without dead ends: 858 [2018-10-24 19:30:28,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:30:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2018-10-24 19:30:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 821. [2018-10-24 19:30:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-10-24 19:30:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1290 transitions. [2018-10-24 19:30:28,446 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1290 transitions. Word has length 155 [2018-10-24 19:30:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:30:28,447 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1290 transitions. [2018-10-24 19:30:28,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:30:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1290 transitions. [2018-10-24 19:30:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 19:30:28,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:28,453 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:30:28,454 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:28,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:28,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1857852795, now seen corresponding path program 1 times [2018-10-24 19:30:28,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:28,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:28,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:28,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:28,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:28,709 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:30:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:30:28,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:30:28,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:30:28,846 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:28,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:30:28,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:30:28,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:30:28,848 INFO L87 Difference]: Start difference. First operand 821 states and 1290 transitions. Second operand 6 states. [2018-10-24 19:30:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:30:32,952 INFO L93 Difference]: Finished difference Result 2553 states and 4218 transitions. [2018-10-24 19:30:32,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:30:32,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-24 19:30:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:30:32,975 INFO L225 Difference]: With dead ends: 2553 [2018-10-24 19:30:32,975 INFO L226 Difference]: Without dead ends: 1738 [2018-10-24 19:30:32,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:30:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-10-24 19:30:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1680. [2018-10-24 19:30:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2018-10-24 19:30:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2538 transitions. [2018-10-24 19:30:33,074 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2538 transitions. Word has length 162 [2018-10-24 19:30:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:30:33,075 INFO L481 AbstractCegarLoop]: Abstraction has 1680 states and 2538 transitions. [2018-10-24 19:30:33,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:30:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2538 transitions. [2018-10-24 19:30:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 19:30:33,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:30:33,084 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:30:33,085 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:30:33,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:33,085 INFO L82 PathProgramCache]: Analyzing trace with hash 195127661, now seen corresponding path program 1 times [2018-10-24 19:30:33,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:30:33,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:33,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:30:33,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:30:33,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:30:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:30:33,375 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:30:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:30:33,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:30:33,425 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:30:33,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 165 with the following transitions: [2018-10-24 19:30:33,429 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [783], [785], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:30:33,525 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:30:33,525 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:30:47,441 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:30:47,443 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:30:47,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:30:47,457 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:30:52,071 INFO L232 lantSequenceWeakener]: Weakened 143 states. On average, predicates are now at 81.69% of their original sizes. [2018-10-24 19:30:52,071 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:30:55,772 INFO L413 sIntCurrentIteration]: We have 163 unified AI predicates [2018-10-24 19:30:55,772 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:30:55,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:30:55,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:30:55,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:30:55,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:30:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:30:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:30:55,775 INFO L87 Difference]: Start difference. First operand 1680 states and 2538 transitions. Second operand 14 states. [2018-10-24 19:32:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:33,734 INFO L93 Difference]: Finished difference Result 3652 states and 5496 transitions. [2018-10-24 19:32:33,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:32:33,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2018-10-24 19:32:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:33,745 INFO L225 Difference]: With dead ends: 3652 [2018-10-24 19:32:33,745 INFO L226 Difference]: Without dead ends: 1978 [2018-10-24 19:32:33,751 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:32:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2018-10-24 19:32:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1825. [2018-10-24 19:32:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2018-10-24 19:32:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2690 transitions. [2018-10-24 19:32:33,884 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2690 transitions. Word has length 164 [2018-10-24 19:32:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:33,884 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2690 transitions. [2018-10-24 19:32:33,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:32:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2690 transitions. [2018-10-24 19:32:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 19:32:33,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:33,894 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:33,894 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:33,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:33,895 INFO L82 PathProgramCache]: Analyzing trace with hash -6587698, now seen corresponding path program 1 times [2018-10-24 19:32:33,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:33,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:33,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:33,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:33,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:32:34,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:32:34,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:32:34,287 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-10-24 19:32:34,288 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [783], [785], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:32:34,295 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:32:34,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:33:54,780 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:33:54,780 INFO L272 AbstractInterpreter]: Visited 144 different actions 564 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:33:54,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:33:54,789 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-24 19:33:59,984 INFO L232 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 83.51% of their original sizes. [2018-10-24 19:33:59,984 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:34:00,161 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:34:00,166 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:34:00,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:34:00 BoogieIcfgContainer [2018-10-24 19:34:00,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:34:00,168 INFO L168 Benchmark]: Toolchain (without parser) took 221530.42 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -105.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 19:34:00,169 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 19:34:00,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.38 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. [2018-10-24 19:34:00,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:34:00,172 INFO L168 Benchmark]: Boogie Preprocessor took 90.77 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:34:00,172 INFO L168 Benchmark]: RCFGBuilder took 3632.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.5 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:34:00,173 INFO L168 Benchmark]: TraceAbstraction took 216926.50 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 571.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:34:00,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 681.38 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 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.77 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3632.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.5 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216926.50 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 571.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 568]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 568). Cancelled while BasicCegarLoop was analyzing trace of length 175 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 216.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 105.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 2919 SDslu, 835 SDs, 0 SdLazy, 3221 SolverSat, 684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 201 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1825occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 94.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9943291505791502 AbsIntWeakeningRatio, 0.21428571428571427 AbsIntAvgWeakeningVarsNumRemoved, 1057.0714285714287 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 248 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 620 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 616 ConstructedInterpolants, 0 QuantifiedInterpolants, 205824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 59/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown