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/Problem18_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:22:32,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:22:32,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:22:32,337 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:22:32,337 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:22:32,339 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:22:32,340 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:22:32,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:22:32,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:22:32,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:22:32,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:22:32,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:22:32,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:22:32,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:22:32,358 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:22:32,359 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:22:32,360 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:22:32,365 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:22:32,375 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:22:32,377 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:22:32,378 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:22:32,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:22:32,384 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:22:32,402 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 22:22:32,429 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:22:32,430 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:22:32,431 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:22:32,431 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:22:32,431 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:22:32,432 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:22:32,432 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:22:32,432 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:22:32,432 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:22:32,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:22:32,435 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:22:32,436 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:22:32,437 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:22:32,437 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:22:32,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:22:32,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:22:32,438 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:22:32,438 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:22:32,438 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:22:32,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:22:32,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:22:32,440 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:22:32,441 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:22:32,441 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:22:32,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:22:32,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:22:32,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:22:32,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:22:32,442 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:22:32,443 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:22:32,443 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:22:32,443 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:22:32,443 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:22:32,444 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:22:32,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:22:32,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:22:32,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:22:32,519 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:22:32,519 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:22:32,520 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c [2018-10-24 22:22:32,596 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ac6944fa/f322a7fa44e9452bb75409021835cacf/FLAGd114a3d1b [2018-10-24 22:22:33,394 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:22:33,395 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c [2018-10-24 22:22:33,424 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ac6944fa/f322a7fa44e9452bb75409021835cacf/FLAGd114a3d1b [2018-10-24 22:22:33,445 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ac6944fa/f322a7fa44e9452bb75409021835cacf [2018-10-24 22:22:33,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:22:33,461 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:22:33,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:22:33,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:22:33,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:22:33,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:22:33" (1/1) ... [2018-10-24 22:22:33,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7670273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:33, skipping insertion in model container [2018-10-24 22:22:33,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:22:33" (1/1) ... [2018-10-24 22:22:33,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:22:33,624 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:22:34,773 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:22:34,778 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:22:35,254 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:22:35,285 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:22:35,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35 WrapperNode [2018-10-24 22:22:35,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:22:35,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:22:35,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:22:35,287 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:22:35,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:35,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:35,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:22:35,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:22:35,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:22:35,842 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:22:35,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:35,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:35,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:35,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:35,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:36,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:36,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (1/1) ... [2018-10-24 22:22:36,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:22:36,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:22:36,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:22:36,084 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:22:36,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (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 22:22:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:22:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:22:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:22:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:22:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:22:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:22:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:22:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:22:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:22:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:22:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:22:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:22:45,082 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:22:45,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:22:45 BoogieIcfgContainer [2018-10-24 22:22:45,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:22:45,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:22:45,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:22:45,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:22:45,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:22:33" (1/3) ... [2018-10-24 22:22:45,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b63753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:22:45, skipping insertion in model container [2018-10-24 22:22:45,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:22:35" (2/3) ... [2018-10-24 22:22:45,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b63753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:22:45, skipping insertion in model container [2018-10-24 22:22:45,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:22:45" (3/3) ... [2018-10-24 22:22:45,095 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label47_true-unreach-call.c [2018-10-24 22:22:45,105 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:22:45,118 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:22:45,136 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:22:45,181 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:22:45,181 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:22:45,182 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:22:45,182 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:22:45,182 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:22:45,182 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:22:45,182 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:22:45,182 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:22:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:22:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 22:22:45,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:45,233 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] [2018-10-24 22:22:45,235 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:45,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:45,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1668959596, now seen corresponding path program 1 times [2018-10-24 22:22:45,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:45,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:45,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:45,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:45,298 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:45,786 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:22:45,858 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 22:22:45,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:45,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:22:45,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:45,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:22:45,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:22:45,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:22:45,890 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:22:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:53,017 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:22:53,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:22:53,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-24 22:22:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:53,054 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:22:53,054 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:22:53,067 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 22:22:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:22:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:22:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:22:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 22:22:53,216 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 66 [2018-10-24 22:22:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:53,217 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 22:22:53,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:22:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 22:22:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 22:22:53,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:53,227 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 22:22:53,228 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:53,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash -842536169, now seen corresponding path program 1 times [2018-10-24 22:22:53,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:53,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:53,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:53,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:53,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:53,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:53,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:22:53,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:53,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:22:53,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:22:53,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:22:53,548 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 22:23:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:04,762 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-24 22:23:04,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:23:04,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-24 22:23:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:04,783 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 22:23:04,784 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 22:23:04,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:23:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 22:23:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-24 22:23:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 22:23:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-24 22:23:04,888 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 141 [2018-10-24 22:23:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:04,889 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-24 22:23:04,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:23:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-24 22:23:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 22:23:04,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:04,895 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:04,896 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:04,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2017722561, now seen corresponding path program 1 times [2018-10-24 22:23:04,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:04,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:04,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:04,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:04,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:05,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:23:05,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:23:05,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:05,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:23:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:23:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:23:05,085 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-24 22:23:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:17,070 INFO L93 Difference]: Finished difference Result 11886 states and 21681 transitions. [2018-10-24 22:23:17,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:23:17,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-24 22:23:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:17,147 INFO L225 Difference]: With dead ends: 11886 [2018-10-24 22:23:17,147 INFO L226 Difference]: Without dead ends: 8964 [2018-10-24 22:23:17,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:23:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8964 states. [2018-10-24 22:23:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8964 to 8894. [2018-10-24 22:23:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8894 states. [2018-10-24 22:23:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 13540 transitions. [2018-10-24 22:23:17,457 INFO L78 Accepts]: Start accepts. Automaton has 8894 states and 13540 transitions. Word has length 153 [2018-10-24 22:23:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:17,457 INFO L481 AbstractCegarLoop]: Abstraction has 8894 states and 13540 transitions. [2018-10-24 22:23:17,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:23:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8894 states and 13540 transitions. [2018-10-24 22:23:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 22:23:17,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:17,464 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:23:17,465 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:17,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1480284689, now seen corresponding path program 1 times [2018-10-24 22:23:17,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:17,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:17,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:17,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:17,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:17,774 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:23:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 118 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:23:17,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:23:17,882 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:23:17,883 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-24 22:23:17,886 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2051], [2053], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:23:17,961 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:23:17,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:23:19,653 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:23:20,309 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:23:20,310 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:23:20,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:20,333 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:23:22,375 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 78.38% of their original sizes. [2018-10-24 22:23:22,376 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:23:22,681 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-24 22:23:22,681 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:23:22,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:23:22,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 22:23:22,683 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:22,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:23:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:23:22,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:23:22,684 INFO L87 Difference]: Start difference. First operand 8894 states and 13540 transitions. Second operand 7 states. [2018-10-24 22:25:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:25:12,326 INFO L93 Difference]: Finished difference Result 18487 states and 27919 transitions. [2018-10-24 22:25:12,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:25:12,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2018-10-24 22:25:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:25:12,378 INFO L225 Difference]: With dead ends: 18487 [2018-10-24 22:25:12,378 INFO L226 Difference]: Without dead ends: 9599 [2018-10-24 22:25:12,407 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:25:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2018-10-24 22:25:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 9597. [2018-10-24 22:25:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9597 states. [2018-10-24 22:25:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9597 states to 9597 states and 14255 transitions. [2018-10-24 22:25:12,653 INFO L78 Accepts]: Start accepts. Automaton has 9597 states and 14255 transitions. Word has length 223 [2018-10-24 22:25:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:25:12,654 INFO L481 AbstractCegarLoop]: Abstraction has 9597 states and 14255 transitions. [2018-10-24 22:25:12,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:25:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 9597 states and 14255 transitions. [2018-10-24 22:25:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-24 22:25:12,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:25:12,669 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:12,670 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:25:12,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:25:12,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1421009842, now seen corresponding path program 1 times [2018-10-24 22:25:12,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:25:12,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:25:12,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:25:12,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:25:12,673 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:25:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:25:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 236 proven. 163 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:25:13,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:25:13,580 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:25:13,581 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 411 with the following transitions: [2018-10-24 22:25:13,581 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2051], [2053], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:25:13,596 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:25:13,596 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:25:14,420 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:25:25,538 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:25:25,538 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:25:25,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:25:25,549 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:25:30,314 INFO L232 lantSequenceWeakener]: Weakened 136 states. On average, predicates are now at 78.78% of their original sizes. [2018-10-24 22:25:30,314 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:26:07,801 INFO L413 sIntCurrentIteration]: We have 409 unified AI predicates [2018-10-24 22:26:07,802 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:26:07,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:26:07,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 22:26:07,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:26:07,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 22:26:07,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 22:26:07,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:26:07,804 INFO L87 Difference]: Start difference. First operand 9597 states and 14255 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 22:26:15,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:26:15,623 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:26:15,628 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:26:15,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:26:15 BoogieIcfgContainer [2018-10-24 22:26:15,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:26:15,629 INFO L168 Benchmark]: Toolchain (without parser) took 222169.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -258.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:26:15,630 INFO L168 Benchmark]: CDTParser took 0.21 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 22:26:15,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1824.66 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:15,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 553.86 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 816.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -991.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:15,633 INFO L168 Benchmark]: Boogie Preprocessor took 241.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:15,633 INFO L168 Benchmark]: RCFGBuilder took 9002.48 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 507.1 MB). Peak memory consumption was 507.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:15,634 INFO L168 Benchmark]: TraceAbstraction took 210541.58 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 63.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 22:26:15,639 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1824.66 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 553.86 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 816.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -991.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 241.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9002.48 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 507.1 MB). Peak memory consumption was 507.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210541.58 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 63.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (9597states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (31 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 148.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1168 SDtfs, 7976 SDslu, 751 SDs, 0 SdLazy, 15485 SolverSat, 4245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 662 GetRequests, 567 SyntacticMatches, 55 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 38.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9597occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961270355313627 AbsIntWeakeningRatio, 0.0919175911251981 AbsIntAvgWeakeningVarsNumRemoved, 330.5721077654517 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 993 NumberOfCodeBlocks, 993 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 988 ConstructedInterpolants, 0 QuantifiedInterpolants, 1436305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 482/710 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown