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/Problem14_label56_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:30:17,349 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:30:17,351 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:30:17,369 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:30:17,369 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:30:17,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:30:17,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:30:17,376 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:30:17,386 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:30:17,388 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:30:17,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:30:17,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:30:17,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:30:17,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:30:17,399 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:30:17,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:30:17,404 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:30:17,408 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:30:17,411 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:30:17,413 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:30:17,416 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:30:17,418 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:30:17,420 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:30:17,431 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:30:17,463 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:30:17,463 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:30:17,465 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:30:17,465 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:30:17,465 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:30:17,465 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:30:17,466 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:30:17,468 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:30:17,468 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:30:17,469 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:30:17,469 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:30:17,469 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:30:17,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:30:17,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:30:17,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:30:17,470 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:30:17,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:30:17,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:30:17,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:30:17,471 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:30:17,471 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:30:17,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:30:17,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:30:17,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:30:17,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:30:17,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:30:17,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:30:17,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:30:17,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:30:17,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:30:17,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:30:17,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:30:17,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:30:17,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:30:17,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:30:17,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:30:17,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:30:17,571 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:30:17,572 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:30:17,573 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-10-23 22:30:17,636 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c734b0741/eb7bbf31359f44b698623f64151d2dfa/FLAG53b2e723c [2018-10-23 22:30:18,244 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:30:18,245 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-10-23 22:30:18,268 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c734b0741/eb7bbf31359f44b698623f64151d2dfa/FLAG53b2e723c [2018-10-23 22:30:18,286 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c734b0741/eb7bbf31359f44b698623f64151d2dfa [2018-10-23 22:30:18,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:30:18,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:30:18,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:30:18,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:30:18,303 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:30:18,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:30:18" (1/1) ... [2018-10-23 22:30:18,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19780353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:18, skipping insertion in model container [2018-10-23 22:30:18,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:30:18" (1/1) ... [2018-10-23 22:30:18,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:30:18,379 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:30:18,832 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:30:18,837 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:30:19,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:30:19,037 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:30:19,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19 WrapperNode [2018-10-23 22:30:19,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:30:19,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:30:19,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:30:19,039 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:30:19,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:30:19,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:30:19,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:30:19,284 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:30:19,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (1/1) ... [2018-10-23 22:30:19,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:30:19,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:30:19,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:30:19,396 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:30:19,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (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 [2018-10-23 22:30:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:30:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:30:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:30:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:30:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:30:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:30:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:30:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:30:23,094 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:30:23,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:30:23 BoogieIcfgContainer [2018-10-23 22:30:23,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:30:23,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:30:23,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:30:23,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:30:23,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:30:18" (1/3) ... [2018-10-23 22:30:23,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a989b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:30:23, skipping insertion in model container [2018-10-23 22:30:23,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:30:19" (2/3) ... [2018-10-23 22:30:23,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a989b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:30:23, skipping insertion in model container [2018-10-23 22:30:23,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:30:23" (3/3) ... [2018-10-23 22:30:23,109 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label56_false-unreach-call_false-termination.c [2018-10-23 22:30:23,118 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:30:23,126 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:30:23,144 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:30:23,183 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:30:23,183 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:30:23,183 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:30:23,184 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:30:23,184 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:30:23,184 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:30:23,184 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:30:23,184 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:30:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:30:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-23 22:30:23,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:30:23,223 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] [2018-10-23 22:30:23,225 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:30:23,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:23,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1546404148, now seen corresponding path program 1 times [2018-10-23 22:30:23,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:30:23,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:23,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:30:23,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:23,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:30:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:30:23,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:30:23,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:30:23,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:23,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:30:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:30:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:30:23,605 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:30:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:30:25,681 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:30:25,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:30:25,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-10-23 22:30:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:30:25,704 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:30:25,705 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:30:25,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:30:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:30:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:30:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:30:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:30:25,806 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 24 [2018-10-23 22:30:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:30:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:30:25,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:30:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:30:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-23 22:30:25,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:30:25,814 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:30:25,815 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:30:25,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:25,815 INFO L82 PathProgramCache]: Analyzing trace with hash -412678633, now seen corresponding path program 1 times [2018-10-23 22:30:25,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:30:25,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:25,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:30:25,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:25,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:30:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:30:26,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:30:26,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:30:26,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:26,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:30:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:30:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:30:26,203 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:30:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:30:28,497 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-23 22:30:28,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:30:28,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-23 22:30:28,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:30:28,506 INFO L225 Difference]: With dead ends: 1062 [2018-10-23 22:30:28,506 INFO L226 Difference]: Without dead ends: 634 [2018-10-23 22:30:28,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:30:28,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-23 22:30:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-23 22:30:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-23 22:30:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-23 22:30:28,550 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 111 [2018-10-23 22:30:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:30:28,551 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-23 22:30:28,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:30:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-23 22:30:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-23 22:30:28,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:30:28,556 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:30:28,557 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:30:28,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:28,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1086282972, now seen corresponding path program 1 times [2018-10-23 22:30:28,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:30:28,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:28,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:30:28,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:28,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:30:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:30:28,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:30:28,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:30:28,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:28,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:30:28,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:30:28,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:30:28,798 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-23 22:30:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:30:33,940 INFO L93 Difference]: Finished difference Result 2167 states and 3655 transitions. [2018-10-23 22:30:33,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 22:30:33,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2018-10-23 22:30:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:30:33,955 INFO L225 Difference]: With dead ends: 2167 [2018-10-23 22:30:33,955 INFO L226 Difference]: Without dead ends: 1172 [2018-10-23 22:30:33,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:30:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2018-10-23 22:30:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2018-10-23 22:30:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2018-10-23 22:30:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1890 transitions. [2018-10-23 22:30:34,017 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1890 transitions. Word has length 120 [2018-10-23 22:30:34,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:30:34,019 INFO L481 AbstractCegarLoop]: Abstraction has 1172 states and 1890 transitions. [2018-10-23 22:30:34,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:30:34,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1890 transitions. [2018-10-23 22:30:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-23 22:30:34,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:30:34,039 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-23 22:30:34,039 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:30:34,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1482099072, now seen corresponding path program 1 times [2018-10-23 22:30:34,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:30:34,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:34,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:30:34,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:34,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:30:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-23 22:30:34,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:30:34,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:30:34,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:34,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:30:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:30:34,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:30:34,364 INFO L87 Difference]: Start difference. First operand 1172 states and 1890 transitions. Second operand 4 states. [2018-10-23 22:30:37,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:30:37,548 INFO L93 Difference]: Finished difference Result 4363 states and 7273 transitions. [2018-10-23 22:30:37,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:30:37,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-23 22:30:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:30:37,581 INFO L225 Difference]: With dead ends: 4363 [2018-10-23 22:30:37,581 INFO L226 Difference]: Without dead ends: 3197 [2018-10-23 22:30:37,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:30:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2018-10-23 22:30:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2018-10-23 22:30:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-10-23 22:30:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4831 transitions. [2018-10-23 22:30:37,704 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4831 transitions. Word has length 224 [2018-10-23 22:30:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:30:37,705 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 4831 transitions. [2018-10-23 22:30:37,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:30:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4831 transitions. [2018-10-23 22:30:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-23 22:30:37,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:30:37,713 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2018-10-23 22:30:37,714 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:30:37,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:37,714 INFO L82 PathProgramCache]: Analyzing trace with hash 938793631, now seen corresponding path program 1 times [2018-10-23 22:30:37,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:30:37,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:37,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:30:37,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:37,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:30:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:38,026 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-23 22:30:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 34 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:30:38,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:30:38,208 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:30:38,209 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-23 22:30:38,212 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:30:38,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:30:38,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:30:41,153 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:30:42,332 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:30:42,334 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:30:42,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:42,380 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:30:45,110 INFO L232 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.47% of their original sizes. [2018-10-23 22:30:45,110 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:30:45,547 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:30:45,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:30:45,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-23 22:30:45,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:45,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:30:45,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:30:45,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:30:45,550 INFO L87 Difference]: Start difference. First operand 3197 states and 4831 transitions. Second operand 7 states. [2018-10-23 22:31:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:31:11,620 INFO L93 Difference]: Finished difference Result 6573 states and 9934 transitions. [2018-10-23 22:31:11,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:31:11,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2018-10-23 22:31:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:31:11,644 INFO L225 Difference]: With dead ends: 6573 [2018-10-23 22:31:11,644 INFO L226 Difference]: Without dead ends: 3382 [2018-10-23 22:31:11,663 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:31:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2018-10-23 22:31:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3380. [2018-10-23 22:31:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2018-10-23 22:31:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5022 transitions. [2018-10-23 22:31:11,762 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5022 transitions. Word has length 243 [2018-10-23 22:31:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:31:11,763 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 5022 transitions. [2018-10-23 22:31:11,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:31:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5022 transitions. [2018-10-23 22:31:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-23 22:31:11,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:31:11,774 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 22:31:11,775 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:31:11,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:31:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1617683216, now seen corresponding path program 1 times [2018-10-23 22:31:11,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:31:11,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:31:11,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:31:11,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:31:11,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:31:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:31:12,244 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:31:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 139 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:31:12,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:31:12,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:31:12,800 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-10-23 22:31:12,801 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:31:12,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:31:12,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:31:15,146 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:31:18,239 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:31:18,240 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:31:18,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:31:18,248 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:31:21,218 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-23 22:31:21,218 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:31:44,225 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:31:44,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:31:44,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-23 22:31:44,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:31:44,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 22:31:44,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 22:31:44,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-23 22:31:44,227 INFO L87 Difference]: Start difference. First operand 3380 states and 5022 transitions. Second operand 20 states. Received shutdown request... [2018-10-23 22:34:15,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 22:34:15,508 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:34:15,514 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:34:15,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:34:15 BoogieIcfgContainer [2018-10-23 22:34:15,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:34:15,516 INFO L168 Benchmark]: Toolchain (without parser) took 237218.43 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 22:34:15,517 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:34:15,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.74 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:34:15,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 245.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:34:15,520 INFO L168 Benchmark]: Boogie Preprocessor took 111.33 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:34:15,520 INFO L168 Benchmark]: RCFGBuilder took 3700.15 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: 135.8 MB). Peak memory consumption was 135.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:34:15,521 INFO L168 Benchmark]: TraceAbstraction took 232415.27 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -798.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-23 22:34:15,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.74 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 245.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.33 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3700.15 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: 135.8 MB). Peak memory consumption was 135.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232415.27 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -798.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (3380states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (7532 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 942 SDtfs, 5097 SDslu, 838 SDs, 0 SdLazy, 7185 SolverSat, 1761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 604 GetRequests, 537 SyntacticMatches, 23 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 25.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3380occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957050253432157 AbsIntWeakeningRatio, 0.10193321616871705 AbsIntAvgWeakeningVarsNumRemoved, 621.5342706502636 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1050 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1044 ConstructedInterpolants, 0 QuantifiedInterpolants, 2181295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 338/622 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown