java -Xmx8000000000 -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 csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label03_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:14:13,382 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:14:13,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:14:13,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:14:13,406 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:14:13,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:14:13,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:14:13,418 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:14:13,420 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:14:13,421 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:14:13,422 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:14:13,424 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:14:13,425 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:14:13,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:14:13,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:14:13,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:14:13,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:14:13,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:14:13,447 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:14:13,448 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:14:13,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:14:13,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:14:13,459 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 20:14:13,469 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:14:13,470 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:14:13,472 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:14:13,473 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:14:13,473 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 20:14:13,499 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:14:13,500 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:14:13,501 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:14:13,501 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:14:13,502 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:14:13,502 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:14:13,502 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:14:13,502 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:14:13,502 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:14:13,503 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:14:13,503 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:14:13,504 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:14:13,504 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:14:13,504 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:14:13,505 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:14:13,505 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:14:13,506 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:14:13,506 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:14:13,506 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:14:13,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:14:13,506 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:14:13,507 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:14:13,507 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:14:13,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:14:13,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:14:13,507 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:14:13,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:14:13,508 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:14:13,508 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:14:13,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:14:13,510 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:14:13,510 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:14:13,510 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:14:13,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:14:13,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:14:13,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:14:13,607 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:14:13,607 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:14:13,608 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label03_true-unreach-call_false-termination.c [2018-07-23 20:14:13,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62df8d857/66c322a656494341bf03679c5ec20aec/FLAG462ea20bb [2018-07-23 20:14:14,225 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:14:14,226 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label03_true-unreach-call_false-termination.c [2018-07-23 20:14:14,248 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62df8d857/66c322a656494341bf03679c5ec20aec/FLAG462ea20bb [2018-07-23 20:14:14,263 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62df8d857/66c322a656494341bf03679c5ec20aec [2018-07-23 20:14:14,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:14:14,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:14:14,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:14:14,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:14:14,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:14:14,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:14,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53775257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14, skipping insertion in model container [2018-07-23 20:14:14,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:14,533 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:14:14,816 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:14:14,834 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:14:14,931 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:14:14,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14 WrapperNode [2018-07-23 20:14:14,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:14:14,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:14:14,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:14:14,980 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:14:14,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:14:15,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:14:15,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:14:15,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:14:15,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... [2018-07-23 20:14:15,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:14:15,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:14:15,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:14:15,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:14:15,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (1/1) ... No working directory specified, using /storage/repos/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 [2018-07-23 20:14:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:14:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:14:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:14:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:14:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:14:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:14:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:14:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:14:18,612 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:14:18,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:14:18 BoogieIcfgContainer [2018-07-23 20:14:18,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:14:18,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:14:18,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:14:18,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:14:18,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:14:14" (1/3) ... [2018-07-23 20:14:18,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c60e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:14:18, skipping insertion in model container [2018-07-23 20:14:18,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:14:14" (2/3) ... [2018-07-23 20:14:18,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c60e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:14:18, skipping insertion in model container [2018-07-23 20:14:18,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:14:18" (3/3) ... [2018-07-23 20:14:18,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label03_true-unreach-call_false-termination.c [2018-07-23 20:14:18,631 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:14:18,640 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:14:18,703 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:14:18,704 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:14:18,705 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:14:18,705 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:14:18,705 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:14:18,705 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:14:18,706 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:14:18,706 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:14:18,706 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:14:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:14:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 20:14:18,765 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:18,767 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:14:18,768 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:18,774 INFO L82 PathProgramCache]: Analyzing trace with hash 58386792, now seen corresponding path program 1 times [2018-07-23 20:14:18,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:18,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:18,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:18,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:18,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:19,459 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:14:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:19,625 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:19,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:14:19,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:19,632 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:14:19,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:14:19,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:14:19,653 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:14:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:21,279 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:14:21,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:14:21,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2018-07-23 20:14:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:21,304 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:14:21,305 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:14:21,312 INFO L573 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 [2018-07-23 20:14:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:14:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:14:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:14:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 541 transitions. [2018-07-23 20:14:21,385 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 541 transitions. Word has length 136 [2018-07-23 20:14:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:21,386 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 541 transitions. [2018-07-23 20:14:21,386 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:14:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 541 transitions. [2018-07-23 20:14:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-23 20:14:21,395 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:21,395 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:14:21,395 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:21,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1333195461, now seen corresponding path program 1 times [2018-07-23 20:14:21,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:21,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:21,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:21,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:21,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:21,652 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:21,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:14:21,652 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:21,655 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:14:21,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:14:21,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:14:21,656 INFO L87 Difference]: Start difference. First operand 340 states and 541 transitions. Second operand 6 states. [2018-07-23 20:14:23,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:23,627 INFO L93 Difference]: Finished difference Result 1075 states and 1784 transitions. [2018-07-23 20:14:23,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:14:23,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-07-23 20:14:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:23,640 INFO L225 Difference]: With dead ends: 1075 [2018-07-23 20:14:23,641 INFO L226 Difference]: Without dead ends: 741 [2018-07-23 20:14:23,645 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:14:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-07-23 20:14:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-07-23 20:14:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-07-23 20:14:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1120 transitions. [2018-07-23 20:14:23,706 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1120 transitions. Word has length 147 [2018-07-23 20:14:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:23,707 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1120 transitions. [2018-07-23 20:14:23,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:14:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1120 transitions. [2018-07-23 20:14:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 20:14:23,714 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:23,715 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:14:23,715 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1983096357, now seen corresponding path program 1 times [2018-07-23 20:14:23,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:23,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:23,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:23,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:23,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:24,178 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:24,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:14:24,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:24,179 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:14:24,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:14:24,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:14:24,180 INFO L87 Difference]: Start difference. First operand 724 states and 1120 transitions. Second operand 5 states. [2018-07-23 20:14:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:26,527 INFO L93 Difference]: Finished difference Result 1578 states and 2483 transitions. [2018-07-23 20:14:26,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 20:14:26,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-07-23 20:14:26,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:26,533 INFO L225 Difference]: With dead ends: 1578 [2018-07-23 20:14:26,533 INFO L226 Difference]: Without dead ends: 721 [2018-07-23 20:14:26,536 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:14:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-07-23 20:14:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-07-23 20:14:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-07-23 20:14:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1044 transitions. [2018-07-23 20:14:26,561 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1044 transitions. Word has length 148 [2018-07-23 20:14:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:26,562 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1044 transitions. [2018-07-23 20:14:26,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:14:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1044 transitions. [2018-07-23 20:14:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 20:14:26,566 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:26,567 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:14:26,567 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:26,567 INFO L82 PathProgramCache]: Analyzing trace with hash -23140269, now seen corresponding path program 1 times [2018-07-23 20:14:26,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:26,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:26,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:26,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:26,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:26,797 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:26,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:14:26,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:26,798 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:14:26,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:14:26,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:14:26,799 INFO L87 Difference]: Start difference. First operand 721 states and 1044 transitions. Second operand 3 states. [2018-07-23 20:14:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:28,922 INFO L93 Difference]: Finished difference Result 2069 states and 3084 transitions. [2018-07-23 20:14:28,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:14:28,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2018-07-23 20:14:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:28,940 INFO L225 Difference]: With dead ends: 2069 [2018-07-23 20:14:28,941 INFO L226 Difference]: Without dead ends: 1354 [2018-07-23 20:14:28,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:14:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-07-23 20:14:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1347. [2018-07-23 20:14:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2018-07-23 20:14:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1892 transitions. [2018-07-23 20:14:28,998 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1892 transitions. Word has length 152 [2018-07-23 20:14:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:28,999 INFO L471 AbstractCegarLoop]: Abstraction has 1347 states and 1892 transitions. [2018-07-23 20:14:28,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:14:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1892 transitions. [2018-07-23 20:14:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-23 20:14:29,006 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:29,007 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:14:29,007 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1356181909, now seen corresponding path program 1 times [2018-07-23 20:14:29,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:29,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:29,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:29,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:29,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:29,302 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:29,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:14:29,302 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:29,303 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:14:29,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:14:29,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:14:29,303 INFO L87 Difference]: Start difference. First operand 1347 states and 1892 transitions. Second operand 3 states. [2018-07-23 20:14:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:30,144 INFO L93 Difference]: Finished difference Result 3912 states and 5667 transitions. [2018-07-23 20:14:30,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:14:30,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2018-07-23 20:14:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:30,162 INFO L225 Difference]: With dead ends: 3912 [2018-07-23 20:14:30,162 INFO L226 Difference]: Without dead ends: 2571 [2018-07-23 20:14:30,171 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:14:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2018-07-23 20:14:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2570. [2018-07-23 20:14:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2018-07-23 20:14:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3542 transitions. [2018-07-23 20:14:30,251 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3542 transitions. Word has length 171 [2018-07-23 20:14:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:30,252 INFO L471 AbstractCegarLoop]: Abstraction has 2570 states and 3542 transitions. [2018-07-23 20:14:30,252 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:14:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3542 transitions. [2018-07-23 20:14:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 20:14:30,263 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:30,263 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:14:30,264 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2087826222, now seen corresponding path program 1 times [2018-07-23 20:14:30,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:30,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:30,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:30,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:30,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:30,775 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:14:30,775 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:14:30,776 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-07-23 20:14:30,778 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [31], [32], [36], [40], [44], [48], [52], [56], [60], [63], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [703], [711], [719], [723], [725], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:14:30,871 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:14:30,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:14:48,489 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:14:48,490 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 20:14:48,502 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:14:51,403 INFO L232 lantSequenceWeakener]: Weakened 100 states. On average, predicates are now at 79.82% of their original sizes. [2018-07-23 20:14:51,403 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:14:52,665 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:14:52,666 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:14:52,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-07-23 20:14:52,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:52,667 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 20:14:52,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 20:14:52,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 20:14:52,668 INFO L87 Difference]: Start difference. First operand 2570 states and 3542 transitions. Second operand 12 states. [2018-07-23 20:15:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:15:03,083 INFO L93 Difference]: Finished difference Result 5195 states and 7163 transitions. [2018-07-23 20:15:03,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 20:15:03,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2018-07-23 20:15:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:15:03,099 INFO L225 Difference]: With dead ends: 5195 [2018-07-23 20:15:03,099 INFO L226 Difference]: Without dead ends: 2631 [2018-07-23 20:15:03,110 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 20:15:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2018-07-23 20:15:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2631. [2018-07-23 20:15:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2631 states. [2018-07-23 20:15:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3608 transitions. [2018-07-23 20:15:03,186 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3608 transitions. Word has length 176 [2018-07-23 20:15:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:15:03,186 INFO L471 AbstractCegarLoop]: Abstraction has 2631 states and 3608 transitions. [2018-07-23 20:15:03,186 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 20:15:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3608 transitions. [2018-07-23 20:15:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-23 20:15:03,196 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:15:03,197 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:15:03,197 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:15:03,197 INFO L82 PathProgramCache]: Analyzing trace with hash 705626703, now seen corresponding path program 1 times [2018-07-23 20:15:03,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:15:03,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:03,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:15:03,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:03,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:15:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:15:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 20:15:03,629 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:15:03,629 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:15:03,629 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-07-23 20:15:03,630 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [20], [24], [28], [31], [32], [36], [40], [44], [48], [52], [56], [60], [63], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [703], [711], [719], [723], [725], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:15:03,637 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:15:03,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:16:41,254 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:16:41,254 INFO L272 AbstractInterpreter]: Visited 141 different actions 208 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:16:41,270 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:16:52,446 INFO L232 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 80.76% of their original sizes. [2018-07-23 20:16:52,446 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:16:55,530 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:16:55,530 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:16:55,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-07-23 20:16:55,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:16:55,531 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 20:16:55,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 20:16:55,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-07-23 20:16:55,532 INFO L87 Difference]: Start difference. First operand 2631 states and 3608 transitions. Second operand 19 states. [2018-07-23 20:17:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:17:27,000 INFO L93 Difference]: Finished difference Result 5340 states and 7318 transitions. [2018-07-23 20:17:27,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 20:17:27,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 185 [2018-07-23 20:17:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:17:27,021 INFO L225 Difference]: With dead ends: 5340 [2018-07-23 20:17:27,021 INFO L226 Difference]: Without dead ends: 2776 [2018-07-23 20:17:27,032 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 20:17:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2018-07-23 20:17:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2769. [2018-07-23 20:17:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2769 states. [2018-07-23 20:17:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3750 transitions. [2018-07-23 20:17:27,115 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3750 transitions. Word has length 185 [2018-07-23 20:17:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:17:27,116 INFO L471 AbstractCegarLoop]: Abstraction has 2769 states and 3750 transitions. [2018-07-23 20:17:27,116 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 20:17:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3750 transitions. [2018-07-23 20:17:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 20:17:27,127 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:17:27,127 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:17:27,128 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:17:27,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1654297307, now seen corresponding path program 1 times [2018-07-23 20:17:27,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:17:27,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:17:27,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:17:27,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:17:27,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:17:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:17:27,628 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 20:17:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-23 20:17:27,807 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:17:27,807 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:17:27,807 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-07-23 20:17:27,808 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [31], [32], [36], [40], [44], [48], [52], [56], [60], [63], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [135], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [703], [711], [719], [723], [725], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:17:27,821 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:17:27,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:18:30,917 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:18:30,918 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:18:30,919 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:18:30,919 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:18:30,919 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-07-23 20:18:30,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:18:30,930 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:18:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:18:31,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:18:31,088 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:18:31,289 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:18:31,290 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:18:31,296 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:18:31,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:18:31 BoogieIcfgContainer [2018-07-23 20:18:31,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:18:31,298 INFO L168 Benchmark]: Toolchain (without parser) took 257021.26 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 488.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:18:31,299 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:18:31,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 20:18:31,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 20:18:31,301 INFO L168 Benchmark]: Boogie Preprocessor took 234.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -868.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-07-23 20:18:31,302 INFO L168 Benchmark]: RCFGBuilder took 3287.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 135.7 MB). Peak memory consumption was 135.7 MB. Max. memory is 7.1 GB. [2018-07-23 20:18:31,303 INFO L168 Benchmark]: TraceAbstraction took 252683.07 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 394.2 MB. Max. memory is 7.1 GB. [2018-07-23 20:18:31,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 111.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 234.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -868.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3287.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 135.7 MB). Peak memory consumption was 135.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252683.07 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 394.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 563]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 563). Cancelled while BasicCegarLoop was analyzing trace of length 219 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 252.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 50.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 990 SDtfs, 2575 SDslu, 758 SDs, 0 SdLazy, 3791 SolverSat, 762 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 415 GetRequests, 346 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2769occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 178.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9949352796353281 AbsIntWeakeningRatio, 0.2116991643454039 AbsIntAvgWeakeningVarsNumRemoved, 897.949860724234 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1115 NumberOfCodeBlocks, 1115 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1108 ConstructedInterpolants, 0 QuantifiedInterpolants, 738857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 169/186 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label03_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-18-31-326.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label03_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-18-31-326.csv Completed graceful shutdown