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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:34:22,409 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:34:22,411 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:34:22,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:34:22,425 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:34:22,426 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:34:22,427 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:34:22,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:34:22,432 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:34:22,433 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:34:22,434 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:34:22,435 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:34:22,436 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:34:22,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:34:22,439 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:34:22,439 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:34:22,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:34:22,443 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:34:22,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:34:22,447 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:34:22,449 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:34:22,450 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:34:22,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:34:22,468 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:34:22,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:34:22,505 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:34:22,506 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:34:22,506 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:34:22,506 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:34:22,506 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:34:22,507 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:34:22,507 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:34:22,507 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:34:22,508 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:34:22,508 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:34:22,508 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:34:22,508 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:34:22,508 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:34:22,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:34:22,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:34:22,511 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:34:22,511 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:34:22,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:34:22,511 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:34:22,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:34:22,512 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:34:22,512 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:34:22,512 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:34:22,512 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:34:22,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:34:22,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:34:22,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:34:22,513 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:34:22,513 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:34:22,513 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:34:22,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:34:22,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:34:22,514 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:34:22,514 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:34:22,514 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:34:22,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:34:22,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:34:22,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:34:22,598 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:34:22,599 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:34:22,599 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-25 01:34:22,665 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f8555947/c1bfd2484ed948c8b954a53f76c2628e/FLAG00e438770 [2018-10-25 01:34:23,324 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:34:23,327 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-25 01:34:23,349 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f8555947/c1bfd2484ed948c8b954a53f76c2628e/FLAG00e438770 [2018-10-25 01:34:23,372 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f8555947/c1bfd2484ed948c8b954a53f76c2628e [2018-10-25 01:34:23,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:34:23,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:34:23,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:34:23,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:34:23,401 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:34:23,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:34:23" (1/1) ... [2018-10-25 01:34:23,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5211ccae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:23, skipping insertion in model container [2018-10-25 01:34:23,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:34:23" (1/1) ... [2018-10-25 01:34:23,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:34:23,522 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:34:24,176 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:34:24,181 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:34:24,372 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:34:24,393 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:34:24,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24 WrapperNode [2018-10-25 01:34:24,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:34:24,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:34:24,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:34:24,396 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:34:24,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:34:24,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:34:24,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:34:24,693 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:34:24,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (1/1) ... [2018-10-25 01:34:24,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:34:24,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:34:24,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:34:24,843 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:34:24,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (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 [2018-10-25 01:34:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:34:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:34:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:34:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:34:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:34:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:34:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:34:24,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:34:29,235 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:34:29,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:34:29 BoogieIcfgContainer [2018-10-25 01:34:29,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:34:29,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:34:29,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:34:29,241 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:34:29,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:34:23" (1/3) ... [2018-10-25 01:34:29,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240a01f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:34:29, skipping insertion in model container [2018-10-25 01:34:29,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:34:24" (2/3) ... [2018-10-25 01:34:29,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240a01f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:34:29, skipping insertion in model container [2018-10-25 01:34:29,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:34:29" (3/3) ... [2018-10-25 01:34:29,246 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-10-25 01:34:29,255 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:34:29,264 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:34:29,283 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:34:29,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:34:29,327 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:34:29,327 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:34:29,327 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:34:29,327 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:34:29,327 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:34:29,328 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:34:29,328 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:34:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:34:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-25 01:34:29,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:29,369 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:29,371 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:29,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:29,378 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-10-25 01:34:29,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:29,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:29,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:29,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:29,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:29,918 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:34:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:30,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:34:30,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:34:30,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:30,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:34:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:34:30,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:34:30,077 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-25 01:34:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:32,379 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-25 01:34:32,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:34:32,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-25 01:34:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:32,403 INFO L225 Difference]: With dead ends: 782 [2018-10-25 01:34:32,404 INFO L226 Difference]: Without dead ends: 487 [2018-10-25 01:34:32,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:34:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-25 01:34:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-25 01:34:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-25 01:34:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-25 01:34:32,516 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 48 [2018-10-25 01:34:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:32,517 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-25 01:34:32,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:34:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-25 01:34:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-25 01:34:32,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:32,526 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:32,526 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:32,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:32,527 INFO L82 PathProgramCache]: Analyzing trace with hash -191480489, now seen corresponding path program 1 times [2018-10-25 01:34:32,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:32,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:32,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:32,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:32,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:33,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:34:33,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 01:34:33,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:33,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:34:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:34:33,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:34:33,229 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-25 01:34:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:40,892 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-25 01:34:40,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:34:40,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-25 01:34:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:40,907 INFO L225 Difference]: With dead ends: 1760 [2018-10-25 01:34:40,907 INFO L226 Difference]: Without dead ends: 1284 [2018-10-25 01:34:40,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:34:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-25 01:34:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-25 01:34:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-25 01:34:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-25 01:34:41,003 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 123 [2018-10-25 01:34:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:41,004 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-25 01:34:41,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:34:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-25 01:34:41,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-25 01:34:41,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:41,012 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:34:41,012 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:41,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash -259626392, now seen corresponding path program 1 times [2018-10-25 01:34:41,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:41,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:41,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:41,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:41,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:41,324 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:34:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:34:41,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:41,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:41,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-25 01:34:41,495 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [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], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:41,545 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:41,545 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:42,249 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:34:42,251 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:34:42,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:42,284 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:34:43,073 INFO L232 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 73.58% of their original sizes. [2018-10-25 01:34:43,073 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:34:43,331 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-25 01:34:43,332 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:34:43,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:34:43,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:34:43,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:43,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:34:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:34:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:34:43,335 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-10-25 01:35:20,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:20,922 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-25 01:35:20,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:35:20,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2018-10-25 01:35:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:20,931 INFO L225 Difference]: With dead ends: 2260 [2018-10-25 01:35:20,931 INFO L226 Difference]: Without dead ends: 1229 [2018-10-25 01:35:20,935 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:35:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-25 01:35:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-25 01:35:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-25 01:35:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-25 01:35:20,973 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 196 [2018-10-25 01:35:20,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:20,974 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-25 01:35:20,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:35:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-25 01:35:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-25 01:35:20,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:20,979 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:35:20,980 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:20,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 188115406, now seen corresponding path program 1 times [2018-10-25 01:35:20,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:20,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:20,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:20,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:20,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:35:21,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:21,726 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:21,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-25 01:35:21,727 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [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], [514], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:21,735 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:21,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:23,546 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:35:23,547 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:35:23,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:23,586 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:35:23,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:23,586 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:35:23,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:23,604 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:35:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:23,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:35:25,962 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_478 Int)) (let ((.cse0 (mod (+ (div v_~a23~0_478 5) 1) 90))) (and (not (= (mod v_~a23~0_478 5) 0)) (< v_~a23~0_478 0) (<= c_~a23~0 (+ .cse0 49)) (= 0 .cse0) (<= |c_old(~a23~0)| v_~a23~0_478)))) (exists ((v_prenex_5 Int)) (let ((.cse1 (mod (div v_prenex_5 5) 90))) (and (<= 0 v_prenex_5) (= .cse1 0) (<= |c_old(~a23~0)| v_prenex_5) (<= c_~a23~0 (+ .cse1 49))))) (exists ((v_prenex_4 Int)) (let ((.cse3 (div v_prenex_4 5))) (let ((.cse2 (mod .cse3 90))) (and (not (= .cse2 0)) (= (mod v_prenex_4 5) 0) (<= (+ c_~a23~0 41) .cse2) (< .cse3 0) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_7 Int)) (let ((.cse5 (+ (div v_prenex_7 5) 1))) (let ((.cse4 (mod .cse5 90))) (and (< v_prenex_7 0) (not (= 0 .cse4)) (< .cse5 0) (<= |c_old(~a23~0)| v_prenex_7) (not (= (mod v_prenex_7 5) 0)) (<= (+ c_~a23~0 41) .cse4))))) (exists ((v_prenex_3 Int)) (let ((.cse6 (div v_prenex_3 5))) (and (<= c_~a23~0 (+ (mod .cse6 90) 49)) (= (mod v_prenex_3 5) 0) (<= 0 .cse6) (<= |c_old(~a23~0)| v_prenex_3)))) (exists ((v_prenex_1 Int)) (let ((.cse8 (div v_prenex_1 5))) (let ((.cse7 (mod .cse8 90))) (and (<= (+ c_~a23~0 41) .cse7) (< .cse8 0) (<= 0 v_prenex_1) (not (= .cse7 0)) (<= |c_old(~a23~0)| v_prenex_1))))) (exists ((v_prenex_2 Int)) (let ((.cse9 (div v_prenex_2 5))) (and (<= |c_old(~a23~0)| v_prenex_2) (<= 0 .cse9) (<= c_~a23~0 (+ (mod .cse9 90) 49)) (<= 0 v_prenex_2)))) (exists ((v_prenex_8 Int)) (let ((.cse10 (mod (div v_prenex_8 5) 90))) (and (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ .cse10 49)) (= .cse10 0) (= (mod v_prenex_8 5) 0)))) (exists ((v_prenex_6 Int)) (let ((.cse11 (+ (div v_prenex_6 5) 1))) (and (<= c_~a23~0 (+ (mod .cse11 90) 49)) (not (= (mod v_prenex_6 5) 0)) (< v_prenex_6 0) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 .cse11))))) is different from true [2018-10-25 01:35:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-10-25 01:35:26,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:35:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:35:26,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:35:26,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-10-25 01:35:26,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:35:26,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:35:26,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:35:26,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-25 01:35:26,687 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-10-25 01:35:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:29,246 INFO L93 Difference]: Finished difference Result 2987 states and 4934 transitions. [2018-10-25 01:35:29,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:35:29,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2018-10-25 01:35:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:29,261 INFO L225 Difference]: With dead ends: 2987 [2018-10-25 01:35:29,261 INFO L226 Difference]: Without dead ends: 1956 [2018-10-25 01:35:29,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 479 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-25 01:35:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2018-10-25 01:35:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1949. [2018-10-25 01:35:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2018-10-25 01:35:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3020 transitions. [2018-10-25 01:35:29,330 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3020 transitions. Word has length 240 [2018-10-25 01:35:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:29,331 INFO L481 AbstractCegarLoop]: Abstraction has 1949 states and 3020 transitions. [2018-10-25 01:35:29,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:35:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3020 transitions. [2018-10-25 01:35:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-25 01:35:29,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:29,337 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:35:29,338 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:29,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:29,338 INFO L82 PathProgramCache]: Analyzing trace with hash 764806318, now seen corresponding path program 1 times [2018-10-25 01:35:29,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:29,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:29,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:29,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:29,340 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:35:29,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:29,904 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:29,904 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-25 01:35:29,905 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [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], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:29,914 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:29,915 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:31,021 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:35:31,021 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:35:31,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:31,054 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:35:31,874 INFO L232 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 74.23% of their original sizes. [2018-10-25 01:35:31,874 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:35:32,316 INFO L413 sIntCurrentIteration]: We have 255 unified AI predicates [2018-10-25 01:35:32,316 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:35:32,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:35:32,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-25 01:35:32,317 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:35:32,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:35:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:35:32,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:35:32,319 INFO L87 Difference]: Start difference. First operand 1949 states and 3020 transitions. Second operand 15 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown