java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 17:35:44,341 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 17:35:44,343 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 17:35:44,356 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 17:35:44,356 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 17:35:44,357 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 17:35:44,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 17:35:44,361 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 17:35:44,363 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 17:35:44,364 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 17:35:44,365 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 17:35:44,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 17:35:44,366 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 17:35:44,367 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 17:35:44,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 17:35:44,370 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 17:35:44,371 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 17:35:44,373 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 17:35:44,385 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 17:35:44,387 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 17:35:44,388 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 17:35:44,389 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 17:35:44,392 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 17:35:44,413 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 17:35:44,413 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 17:35:44,420 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 17:35:44,421 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 17:35:44,421 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 17:35:44,446 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 17:35:44,447 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 17:35:44,448 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 17:35:44,448 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 17:35:44,448 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 17:35:44,448 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 17:35:44,449 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 17:35:44,449 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 17:35:44,449 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 17:35:44,449 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 17:35:44,449 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 17:35:44,450 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 17:35:44,450 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 17:35:44,451 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 17:35:44,451 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 17:35:44,451 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 17:35:44,451 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 17:35:44,451 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 17:35:44,451 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 17:35:44,452 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 17:35:44,452 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 17:35:44,452 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 17:35:44,452 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 17:35:44,452 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 17:35:44,453 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 17:35:44,453 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 17:35:44,453 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 17:35:44,453 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 17:35:44,453 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 17:35:44,454 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 17:35:44,454 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 17:35:44,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 17:35:44,454 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 17:35:44,454 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 17:35:44,454 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 17:35:44,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 17:35:44,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 17:35:44,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 17:35:44,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 17:35:44,524 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 17:35:44,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-07-21 17:35:44,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/963b15a0f/949fe5d6e3294a8e816e3d9cf28dcad2/FLAGfc71f3fb6 [2018-07-21 17:35:45,269 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 17:35:45,270 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-07-21 17:35:45,306 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/963b15a0f/949fe5d6e3294a8e816e3d9cf28dcad2/FLAGfc71f3fb6 [2018-07-21 17:35:45,341 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/963b15a0f/949fe5d6e3294a8e816e3d9cf28dcad2 [2018-07-21 17:35:45,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 17:35:45,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 17:35:45,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 17:35:45,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 17:35:45,374 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 17:35:45,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:35:45" (1/1) ... [2018-07-21 17:35:45,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1be556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:45, skipping insertion in model container [2018-07-21 17:35:45,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:35:45" (1/1) ... [2018-07-21 17:35:45,613 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 17:35:45,967 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:35:45,984 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 17:35:46,228 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:35:46,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46 WrapperNode [2018-07-21 17:35:46,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 17:35:46,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 17:35:46,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 17:35:46,293 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 17:35:46,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 17:35:46,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 17:35:46,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 17:35:46,438 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 17:35:46,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... [2018-07-21 17:35:46,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 17:35:46,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 17:35:46,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 17:35:46,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 17:35:46,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-21 17:35:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 17:35:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 17:35:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 17:35:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 17:35:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 17:35:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 17:35:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 17:35:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 17:35:50,541 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 17:35:50,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:35:50 BoogieIcfgContainer [2018-07-21 17:35:50,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 17:35:50,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 17:35:50,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 17:35:50,547 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 17:35:50,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:35:45" (1/3) ... [2018-07-21 17:35:50,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed1d968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:35:50, skipping insertion in model container [2018-07-21 17:35:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:46" (2/3) ... [2018-07-21 17:35:50,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed1d968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:35:50, skipping insertion in model container [2018-07-21 17:35:50,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:35:50" (3/3) ... [2018-07-21 17:35:50,551 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09_true-unreach-call_false-termination.c [2018-07-21 17:35:50,562 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 17:35:50,571 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 17:35:50,628 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 17:35:50,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 17:35:50,630 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 17:35:50,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 17:35:50,630 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 17:35:50,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 17:35:50,630 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 17:35:50,630 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 17:35:50,631 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 17:35:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-21 17:35:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-21 17:35:50,666 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:35:50,668 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:35:50,668 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:35:50,674 INFO L82 PathProgramCache]: Analyzing trace with hash 968801788, now seen corresponding path program 1 times [2018-07-21 17:35:50,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:35:50,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:35:50,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:35:50,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:35:50,719 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:35:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:35:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:35:51,092 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:35:51,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 17:35:51,093 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:35:51,097 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 17:35:51,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 17:35:51,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:35:51,116 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-21 17:35:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:35:52,424 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-21 17:35:52,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 17:35:52,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2018-07-21 17:35:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:35:52,449 INFO L225 Difference]: With dead ends: 691 [2018-07-21 17:35:52,449 INFO L226 Difference]: Without dead ends: 434 [2018-07-21 17:35:52,456 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:35:52,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-21 17:35:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-21 17:35:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-21 17:35:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 772 transitions. [2018-07-21 17:35:52,542 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 772 transitions. Word has length 52 [2018-07-21 17:35:52,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:35:52,543 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 772 transitions. [2018-07-21 17:35:52,543 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 17:35:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 772 transitions. [2018-07-21 17:35:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-21 17:35:52,551 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:35:52,551 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:35:52,551 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:35:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash 462303392, now seen corresponding path program 1 times [2018-07-21 17:35:52,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:35:52,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:35:52,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:35:52,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:35:52,554 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:35:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:35:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:35:52,811 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:35:52,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:35:52,811 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:35:52,815 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:35:52,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:35:52,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:35:52,816 INFO L87 Difference]: Start difference. First operand 434 states and 772 transitions. Second operand 6 states. [2018-07-21 17:35:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:35:57,255 INFO L93 Difference]: Finished difference Result 1234 states and 2250 transitions. [2018-07-21 17:35:57,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:35:57,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-21 17:35:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:35:57,269 INFO L225 Difference]: With dead ends: 1234 [2018-07-21 17:35:57,270 INFO L226 Difference]: Without dead ends: 806 [2018-07-21 17:35:57,274 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:35:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-07-21 17:35:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-07-21 17:35:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-21 17:35:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2018-07-21 17:35:57,360 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 122 [2018-07-21 17:35:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:35:57,361 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2018-07-21 17:35:57,361 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:35:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2018-07-21 17:35:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-21 17:35:57,372 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:35:57,372 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:35:57,372 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:35:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1493086119, now seen corresponding path program 1 times [2018-07-21 17:35:57,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:35:57,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:35:57,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:35:57,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:35:57,379 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:35:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:35:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:35:57,588 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:35:57,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 17:35:57,589 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:35:57,589 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 17:35:57,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 17:35:57,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 17:35:57,590 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand 5 states. [2018-07-21 17:35:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:35:59,915 INFO L93 Difference]: Finished difference Result 2186 states and 3741 transitions. [2018-07-21 17:35:59,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:35:59,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-07-21 17:35:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:35:59,932 INFO L225 Difference]: With dead ends: 2186 [2018-07-21 17:35:59,932 INFO L226 Difference]: Without dead ends: 1395 [2018-07-21 17:35:59,936 INFO L578 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 [2018-07-21 17:35:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2018-07-21 17:36:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2018-07-21 17:36:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2018-07-21 17:36:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2191 transitions. [2018-07-21 17:36:00,030 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2191 transitions. Word has length 123 [2018-07-21 17:36:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:36:00,034 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2191 transitions. [2018-07-21 17:36:00,035 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 17:36:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2191 transitions. [2018-07-21 17:36:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-21 17:36:00,037 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:36:00,038 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:36:00,038 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:36:00,038 INFO L82 PathProgramCache]: Analyzing trace with hash 140808899, now seen corresponding path program 1 times [2018-07-21 17:36:00,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:36:00,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:36:00,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:36:00,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:36:00,040 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:36:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:36:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:36:00,189 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:36:00,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 17:36:00,189 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:36:00,190 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 17:36:00,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 17:36:00,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 17:36:00,190 INFO L87 Difference]: Start difference. First operand 1369 states and 2191 transitions. Second operand 5 states. [2018-07-21 17:36:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:36:02,587 INFO L93 Difference]: Finished difference Result 4058 states and 6474 transitions. [2018-07-21 17:36:02,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 17:36:02,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-07-21 17:36:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:36:02,609 INFO L225 Difference]: With dead ends: 4058 [2018-07-21 17:36:02,609 INFO L226 Difference]: Without dead ends: 2695 [2018-07-21 17:36:02,621 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:36:02,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2018-07-21 17:36:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2604. [2018-07-21 17:36:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2018-07-21 17:36:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3730 transitions. [2018-07-21 17:36:02,737 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3730 transitions. Word has length 125 [2018-07-21 17:36:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:36:02,738 INFO L471 AbstractCegarLoop]: Abstraction has 2604 states and 3730 transitions. [2018-07-21 17:36:02,738 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 17:36:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3730 transitions. [2018-07-21 17:36:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-21 17:36:02,744 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:36:02,744 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:36:02,744 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:36:02,744 INFO L82 PathProgramCache]: Analyzing trace with hash -826971572, now seen corresponding path program 1 times [2018-07-21 17:36:02,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:36:02,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:36:02,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:36:02,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:36:02,746 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:36:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:36:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:36:03,023 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:36:03,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 17:36:03,023 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:36:03,024 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 17:36:03,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 17:36:03,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 17:36:03,025 INFO L87 Difference]: Start difference. First operand 2604 states and 3730 transitions. Second operand 4 states. [2018-07-21 17:36:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:36:05,151 INFO L93 Difference]: Finished difference Result 8902 states and 12687 transitions. [2018-07-21 17:36:05,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 17:36:05,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-07-21 17:36:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:36:05,182 INFO L225 Difference]: With dead ends: 8902 [2018-07-21 17:36:05,182 INFO L226 Difference]: Without dead ends: 4427 [2018-07-21 17:36:05,220 INFO L578 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 [2018-07-21 17:36:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2018-07-21 17:36:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4425. [2018-07-21 17:36:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4425 states. [2018-07-21 17:36:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 5842 transitions. [2018-07-21 17:36:05,372 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 5842 transitions. Word has length 148 [2018-07-21 17:36:05,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:36:05,372 INFO L471 AbstractCegarLoop]: Abstraction has 4425 states and 5842 transitions. [2018-07-21 17:36:05,372 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 17:36:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 5842 transitions. [2018-07-21 17:36:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-21 17:36:05,380 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:36:05,380 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-07-21 17:36:05,380 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:36:05,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2016699776, now seen corresponding path program 1 times [2018-07-21 17:36:05,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:36:05,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:36:05,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:36:05,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:36:05,383 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:36:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:36:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:36:06,178 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:36:06,178 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:36:06,179 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-07-21 17:36:06,181 INFO L201 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], [289], [297], [305], [313], [317], [319], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:36:06,245 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:36:06,245 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:36:12,773 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:36:12,775 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 17:36:12,793 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:36:21,272 INFO L232 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 78.14% of their original sizes. [2018-07-21 17:36:21,272 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:36:22,048 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:36:22,049 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:36:22,050 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-07-21 17:36:22,050 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:36:22,050 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-21 17:36:22,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-21 17:36:22,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-21 17:36:22,051 INFO L87 Difference]: Start difference. First operand 4425 states and 5842 transitions. Second operand 7 states. [2018-07-21 17:36:37,726 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:37:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:37:28,879 INFO L93 Difference]: Finished difference Result 9029 states and 11898 transitions. [2018-07-21 17:37:28,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:37:28,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2018-07-21 17:37:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:37:28,935 INFO L225 Difference]: With dead ends: 9029 [2018-07-21 17:37:28,935 INFO L226 Difference]: Without dead ends: 4610 [2018-07-21 17:37:28,952 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:37:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2018-07-21 17:37:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4608. [2018-07-21 17:37:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4608 states. [2018-07-21 17:37:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6033 transitions. [2018-07-21 17:37:29,109 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6033 transitions. Word has length 210 [2018-07-21 17:37:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:37:29,110 INFO L471 AbstractCegarLoop]: Abstraction has 4608 states and 6033 transitions. [2018-07-21 17:37:29,110 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-21 17:37:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6033 transitions. [2018-07-21 17:37:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-07-21 17:37:29,119 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:37:29,120 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:37:29,123 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:37:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash -227698513, now seen corresponding path program 1 times [2018-07-21 17:37:29,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:37:29,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:37:29,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:37:29,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:37:29,125 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:37:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:37:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 222 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 17:37:30,084 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:37:30,084 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:37:30,084 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-07-21 17:37:30,085 INFO L201 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], [289], [297], [305], [313], [317], [319], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:37:30,091 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:37:30,091 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:37:37,802 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:37:37,802 INFO L272 AbstractInterpreter]: Visited 94 different actions 184 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 17:37:37,806 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:37:41,718 INFO L232 lantSequenceWeakener]: Weakened 293 states. On average, predicates are now at 77.94% of their original sizes. [2018-07-21 17:37:41,718 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:37:45,915 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:37:45,915 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:37:45,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 25 [2018-07-21 17:37:45,915 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:37:45,916 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-21 17:37:45,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-21 17:37:45,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-07-21 17:37:45,916 INFO L87 Difference]: Start difference. First operand 4608 states and 6033 transitions. Second operand 15 states. [2018-07-21 17:37:54,935 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:38:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:38:12,051 INFO L93 Difference]: Finished difference Result 9399 states and 12328 transitions. [2018-07-21 17:38:12,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-21 17:38:12,052 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 295 [2018-07-21 17:38:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:38:12,071 INFO L225 Difference]: With dead ends: 9399 [2018-07-21 17:38:12,071 INFO L226 Difference]: Without dead ends: 4980 [2018-07-21 17:38:12,088 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 303 GetRequests, 216 SyntacticMatches, 65 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-07-21 17:38:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2018-07-21 17:38:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 4977. [2018-07-21 17:38:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2018-07-21 17:38:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 6419 transitions. [2018-07-21 17:38:12,247 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 6419 transitions. Word has length 295 [2018-07-21 17:38:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:38:12,247 INFO L471 AbstractCegarLoop]: Abstraction has 4977 states and 6419 transitions. [2018-07-21 17:38:12,247 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-21 17:38:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 6419 transitions. [2018-07-21 17:38:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-21 17:38:12,257 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:38:12,258 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:38:12,258 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:38:12,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1942152219, now seen corresponding path program 1 times [2018-07-21 17:38:12,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:38:12,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:38:12,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:38:12,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:38:12,259 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:38:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:38:12,628 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-21 17:38:13,173 WARN L169 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-07-21 17:38:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 194 proven. 119 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-07-21 17:38:13,626 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:38:13,626 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:38:13,626 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 322 with the following transitions: [2018-07-21 17:38:13,627 INFO L201 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], [289], [297], [305], [313], [317], [319], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:38:13,631 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:38:13,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:38:26,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:38:26,287 INFO L272 AbstractInterpreter]: Visited 120 different actions 236 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 17:38:26,293 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:38:29,769 INFO L232 lantSequenceWeakener]: Weakened 319 states. On average, predicates are now at 77.89% of their original sizes. [2018-07-21 17:38:29,770 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:38:30,172 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:38:30,173 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:38:30,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2018-07-21 17:38:30,173 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:38:30,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-21 17:38:30,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-21 17:38:30,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-21 17:38:30,174 INFO L87 Difference]: Start difference. First operand 4977 states and 6419 transitions. Second operand 12 states. [2018-07-21 17:38:40,838 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:38:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:38:57,967 INFO L93 Difference]: Finished difference Result 9584 states and 12478 transitions. [2018-07-21 17:38:57,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-21 17:38:57,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2018-07-21 17:38:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:38:57,989 INFO L225 Difference]: With dead ends: 9584 [2018-07-21 17:38:57,989 INFO L226 Difference]: Without dead ends: 5165 [2018-07-21 17:38:58,003 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 330 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2018-07-21 17:38:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2018-07-21 17:38:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5162. [2018-07-21 17:38:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5162 states. [2018-07-21 17:38:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 6618 transitions. [2018-07-21 17:38:58,167 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 6618 transitions. Word has length 321 [2018-07-21 17:38:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:38:58,167 INFO L471 AbstractCegarLoop]: Abstraction has 5162 states and 6618 transitions. [2018-07-21 17:38:58,167 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-21 17:38:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 6618 transitions. [2018-07-21 17:38:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-21 17:38:58,178 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:38:58,179 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:38:58,179 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:38:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash 976102151, now seen corresponding path program 1 times [2018-07-21 17:38:58,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:38:58,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:38:58,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:38:58,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:38:58,180 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:38:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:38:58,614 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-21 17:38:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 342 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:38:59,306 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:38:59,307 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:38:59,307 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-07-21 17:38:59,307 INFO L201 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], [289], [297], [305], [313], [317], [319], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:38:59,312 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:38:59,313 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:39:06,853 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-21 17:39:12,758 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-21 17:39:12,759 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-21 17:39:12,760 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-21 17:39:12,760 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:39:12,760 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-21 17:39:12,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:39:12,769 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 17:39:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:39:12,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 17:39:12,937 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-21 17:39:13,138 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 17:39:13,138 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 17:39:13,142 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 17:39:13,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:39:13 BoogieIcfgContainer [2018-07-21 17:39:13,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 17:39:13,146 INFO L168 Benchmark]: Toolchain (without parser) took 207790.48 ms. Allocated memory was 304.6 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 249.2 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-21 17:39:13,147 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 304.6 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 17:39:13,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 928.03 ms. Allocated memory is still 304.6 MB. Free memory was 249.2 MB in the beginning and 204.3 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 5.3 GB. [2018-07-21 17:39:13,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.53 ms. Allocated memory is still 304.6 MB. Free memory was 204.3 MB in the beginning and 194.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-07-21 17:39:13,157 INFO L168 Benchmark]: Boogie Preprocessor took 348.17 ms. Allocated memory was 304.6 MB in the beginning and 486.0 MB in the end (delta: 181.4 MB). Free memory was 194.4 MB in the beginning and 450.3 MB in the end (delta: -255.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 5.3 GB. [2018-07-21 17:39:13,159 INFO L168 Benchmark]: RCFGBuilder took 3755.93 ms. Allocated memory was 486.0 MB in the beginning and 504.9 MB in the end (delta: 18.9 MB). Free memory was 450.3 MB in the beginning and 456.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 136.7 MB. Max. memory is 5.3 GB. [2018-07-21 17:39:13,159 INFO L168 Benchmark]: TraceAbstraction took 202602.30 ms. Allocated memory was 504.9 MB in the beginning and 2.5 GB in the end (delta: 2.0 GB). Free memory was 456.2 MB in the beginning and 1.4 GB in the end (delta: -962.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-21 17:39:13,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 304.6 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 928.03 ms. Allocated memory is still 304.6 MB. Free memory was 249.2 MB in the beginning and 204.3 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 144.53 ms. Allocated memory is still 304.6 MB. Free memory was 204.3 MB in the beginning and 194.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 348.17 ms. Allocated memory was 304.6 MB in the beginning and 486.0 MB in the end (delta: 181.4 MB). Free memory was 194.4 MB in the beginning and 450.3 MB in the end (delta: -255.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 3755.93 ms. Allocated memory was 486.0 MB in the beginning and 504.9 MB in the end (delta: 18.9 MB). Free memory was 450.3 MB in the beginning and 456.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 136.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 202602.30 ms. Allocated memory was 504.9 MB in the beginning and 2.5 GB in the end (delta: 2.0 GB). Free memory was 456.2 MB in the beginning and 1.4 GB in the end (delta: -962.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was analyzing trace of length 348 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 133.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1051 SDtfs, 5850 SDslu, 1190 SDs, 0 SdLazy, 9396 SolverSat, 1548 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 881 GetRequests, 742 SyntacticMatches, 69 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5162occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.4s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.995287213622836 AbsIntWeakeningRatio, 0.10935601458080195 AbsIntAvgWeakeningVarsNumRemoved, 72.46780072904009 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 136 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1396 NumberOfCodeBlocks, 1396 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1388 ConstructedInterpolants, 0 QuantifiedInterpolants, 2569121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 817/1078 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label09_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_17-39-13-185.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label09_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_17-39-13-185.csv Completed graceful shutdown