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_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:01:12,334 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:01:12,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:01:12,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:01:12,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:01:12,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:01:12,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:01:12,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:01:12,354 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:01:12,355 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:01:12,356 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:01:12,356 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:01:12,357 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:01:12,358 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:01:12,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:01:12,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:01:12,361 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:01:12,363 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:01:12,365 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:01:12,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:01:12,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:01:12,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:01:12,374 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:01:12,389 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:01:12,389 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:01:12,390 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:01:12,391 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:01:12,391 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:01:12,421 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:01:12,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:01:12,423 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:01:12,423 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:01:12,423 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:01:12,424 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:01:12,424 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:01:12,424 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:01:12,424 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:01:12,424 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:01:12,425 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:01:12,425 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:01:12,426 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:01:12,426 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:01:12,426 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:01:12,427 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:01:12,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:01:12,428 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:01:12,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:01:12,428 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:01:12,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:01:12,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:01:12,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:01:12,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:01:12,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:01:12,430 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:01:12,431 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:01:12,431 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:01:12,431 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:01:12,431 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:01:12,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:01:12,432 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:01:12,432 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:01:12,432 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:01:12,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:01:12,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:01:12,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:01:12,507 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:01:12,508 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:01:12,509 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-10-24 19:01:12,582 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9d4100bd/87e35fa20a4e4193b5696d853d106b35/FLAGc21c0ce95 [2018-10-24 19:01:13,360 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:01:13,361 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-10-24 19:01:13,388 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9d4100bd/87e35fa20a4e4193b5696d853d106b35/FLAGc21c0ce95 [2018-10-24 19:01:13,404 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e9d4100bd/87e35fa20a4e4193b5696d853d106b35 [2018-10-24 19:01:13,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:01:13,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:01:13,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:01:13,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:01:13,426 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:01:13,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:01:13" (1/1) ... [2018-10-24 19:01:13,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfb3315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:13, skipping insertion in model container [2018-10-24 19:01:13,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:01:13" (1/1) ... [2018-10-24 19:01:13,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:01:13,586 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:01:14,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:01:14,881 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:01:15,395 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:01:15,431 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:01:15,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15 WrapperNode [2018-10-24 19:01:15,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:01:15,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:01:15,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:01:15,434 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:01:15,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:15,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:15,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:01:15,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:01:15,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:01:15,898 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:01:15,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:15,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:15,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:15,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:16,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:16,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:16,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... [2018-10-24 19:01:16,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:01:16,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:01:16,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:01:16,123 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:01:16,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:01:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:01:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:01:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:01:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:01:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:01:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:01:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:01:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:01:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:01:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:01:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:01:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:01:25,447 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:01:25,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:01:25 BoogieIcfgContainer [2018-10-24 19:01:25,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:01:25,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:01:25,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:01:25,462 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:01:25,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:01:13" (1/3) ... [2018-10-24 19:01:25,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dd834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:01:25, skipping insertion in model container [2018-10-24 19:01:25,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:15" (2/3) ... [2018-10-24 19:01:25,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dd834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:01:25, skipping insertion in model container [2018-10-24 19:01:25,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:01:25" (3/3) ... [2018-10-24 19:01:25,466 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label35_false-unreach-call.c [2018-10-24 19:01:25,474 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:01:25,484 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:01:25,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:01:25,560 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:01:25,561 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:01:25,561 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:01:25,561 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:01:25,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:01:25,561 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:01:25,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:01:25,562 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:01:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 19:01:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 19:01:25,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:25,613 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] [2018-10-24 19:01:25,616 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:25,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:25,622 INFO L82 PathProgramCache]: Analyzing trace with hash 296759455, now seen corresponding path program 1 times [2018-10-24 19:01:25,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:25,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:25,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:25,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:25,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:26,084 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 19:01:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:26,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:26,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:01:26,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:26,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:01:26,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:01:26,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:01:26,120 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 19:01:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:38,090 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 19:01:38,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:01:38,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 19:01:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:38,133 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 19:01:38,133 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 19:01:38,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:01:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 19:01:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-24 19:01:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-24 19:01:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-10-24 19:01:38,340 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 21 [2018-10-24 19:01:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:38,341 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-10-24 19:01:38,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:01:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-10-24 19:01:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 19:01:38,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:38,352 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:01:38,352 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:38,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1810798224, now seen corresponding path program 1 times [2018-10-24 19:01:38,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:38,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:38,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:38,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:38,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:38,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:38,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:01:38,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:38,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:01:38,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:01:38,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:01:38,680 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-10-24 19:01:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:50,862 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-10-24 19:01:50,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:50,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-24 19:01:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:50,906 INFO L225 Difference]: With dead ends: 6600 [2018-10-24 19:01:50,906 INFO L226 Difference]: Without dead ends: 4413 [2018-10-24 19:01:50,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:01:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-24 19:01:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-24 19:01:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-24 19:01:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-10-24 19:01:51,075 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 91 [2018-10-24 19:01:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:51,076 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-10-24 19:01:51,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:01:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-10-24 19:01:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 19:01:51,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:51,088 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:01:51,089 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:51,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:51,092 INFO L82 PathProgramCache]: Analyzing trace with hash -46387127, now seen corresponding path program 1 times [2018-10-24 19:01:51,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:51,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:51,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:51,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:51,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:51,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:51,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:01:51,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:51,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:01:51,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:01:51,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:01:51,410 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-10-24 19:01:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:57,281 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-10-24 19:01:57,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:57,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-10-24 19:01:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:57,326 INFO L225 Difference]: With dead ends: 11002 [2018-10-24 19:01:57,326 INFO L226 Difference]: Without dead ends: 6630 [2018-10-24 19:01:57,343 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 [2018-10-24 19:01:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-24 19:01:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-24 19:01:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-24 19:01:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-10-24 19:01:57,517 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 118 [2018-10-24 19:01:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:57,518 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-10-24 19:01:57,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:01:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-10-24 19:01:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 19:01:57,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:57,531 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:01:57,531 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:57,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2019397074, now seen corresponding path program 1 times [2018-10-24 19:01:57,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:57,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:57,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:57,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:57,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 19:01:57,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:57,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:01:57,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:57,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:01:57,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:01:57,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:01:57,789 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-10-24 19:02:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:02:04,950 INFO L93 Difference]: Finished difference Result 26034 states and 36953 transitions. [2018-10-24 19:02:04,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:02:04,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2018-10-24 19:02:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:02:05,068 INFO L225 Difference]: With dead ends: 26034 [2018-10-24 19:02:05,068 INFO L226 Difference]: Without dead ends: 19450 [2018-10-24 19:02:05,112 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 [2018-10-24 19:02:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2018-10-24 19:02:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19450. [2018-10-24 19:02:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19450 states. [2018-10-24 19:02:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 25958 transitions. [2018-10-24 19:02:05,608 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 25958 transitions. Word has length 198 [2018-10-24 19:02:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:02:05,609 INFO L481 AbstractCegarLoop]: Abstraction has 19450 states and 25958 transitions. [2018-10-24 19:02:05,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:02:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 25958 transitions. [2018-10-24 19:02:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 19:02:05,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:02:05,620 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:02:05,620 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:02:05,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:02:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1457741757, now seen corresponding path program 1 times [2018-10-24 19:02:05,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:02:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:05,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:02:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:05,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:02:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:02:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:02:06,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:02:06,168 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:02:06,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-10-24 19:02:06,173 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1691], [1693], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2272], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:02:06,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:02:06,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:02:08,961 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:02:08,963 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 19:02:08,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:02:08,973 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:02:10,768 INFO L232 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 77.42% of their original sizes. [2018-10-24 19:02:10,768 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:02:11,040 INFO L413 sIntCurrentIteration]: We have 236 unified AI predicates [2018-10-24 19:02:11,040 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:02:11,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:02:11,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 19:02:11,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:02:11,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:02:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:02:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:02:11,043 INFO L87 Difference]: Start difference. First operand 19450 states and 25958 transitions. Second operand 7 states. [2018-10-24 19:02:17,248 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:03:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:03:15,846 INFO L93 Difference]: Finished difference Result 39599 states and 52693 transitions. [2018-10-24 19:03:15,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:03:15,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2018-10-24 19:03:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:03:15,917 INFO L225 Difference]: With dead ends: 39599 [2018-10-24 19:03:15,918 INFO L226 Difference]: Without dead ends: 20155 [2018-10-24 19:03:15,980 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 237 GetRequests, 231 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 19:03:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2018-10-24 19:03:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20153. [2018-10-24 19:03:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-10-24 19:03:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26673 transitions. [2018-10-24 19:03:16,375 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26673 transitions. Word has length 237 [2018-10-24 19:03:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:03:16,376 INFO L481 AbstractCegarLoop]: Abstraction has 20153 states and 26673 transitions. [2018-10-24 19:03:16,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:03:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26673 transitions. [2018-10-24 19:03:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-24 19:03:16,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:03:16,390 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:03:16,390 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:03:16,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:03:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1468169215, now seen corresponding path program 1 times [2018-10-24 19:03:16,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:03:16,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:03:16,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:03:16,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:03:16,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:03:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:03:16,999 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:03:17,214 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:03:17,426 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:03:17,898 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 19:03:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 101 proven. 259 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:03:18,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:03:18,355 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:03:18,355 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-10-24 19:03:18,356 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1691], [1693], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2272], [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 19:03:18,372 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:03:18,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:03:28,668 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:03:28,668 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 19:03:28,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:03:28,676 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:03:33,582 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 77.7% of their original sizes. [2018-10-24 19:03:33,582 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:04:22,019 INFO L413 sIntCurrentIteration]: We have 423 unified AI predicates [2018-10-24 19:04:22,019 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:04:22,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:04:22,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-10-24 19:04:22,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:04:22,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 19:04:22,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 19:04:22,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-10-24 19:04:22,022 INFO L87 Difference]: Start difference. First operand 20153 states and 26673 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 19:05:01,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:05:01,896 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:05:01,901 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:05:01,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:05:01 BoogieIcfgContainer [2018-10-24 19:05:01,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:05:01,902 INFO L168 Benchmark]: Toolchain (without parser) took 228485.28 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 19:05:01,903 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:05:01,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2013.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:05:01,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 464.27 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -895.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:05:01,906 INFO L168 Benchmark]: Boogie Preprocessor took 224.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:05:01,906 INFO L168 Benchmark]: RCFGBuilder took 9326.97 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 516.5 MB). Peak memory consumption was 516.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:05:01,907 INFO L168 Benchmark]: TraceAbstraction took 216450.89 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 697.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:05:01,912 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2013.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 464.27 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -895.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 224.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9326.97 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 516.5 MB). Peak memory consumption was 516.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216450.89 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 697.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (20153states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (122 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 142.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2486 SDtfs, 9909 SDslu, 722 SDs, 0 SdLazy, 18374 SolverSat, 5146 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 82.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 694 GetRequests, 580 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 49.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20153occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9962915924435355 AbsIntWeakeningRatio, 0.08801213960546282 AbsIntAvgWeakeningVarsNumRemoved, 335.092564491654 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1089 NumberOfCodeBlocks, 1089 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1083 ConstructedInterpolants, 0 QuantifiedInterpolants, 1761145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 365/626 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown