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_label58_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:24:13,353 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:24:13,355 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:24:13,369 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:24:13,369 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:24:13,370 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:24:13,371 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:24:13,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:24:13,375 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:24:13,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:24:13,376 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:24:13,377 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:24:13,377 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:24:13,378 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:24:13,379 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:24:13,380 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:24:13,381 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:24:13,383 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:24:13,385 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:24:13,386 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:24:13,388 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:24:13,389 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:24:13,391 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:24:13,392 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:24:13,392 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:24:13,393 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:24:13,396 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:24:13,399 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:24:13,399 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:24:13,402 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:24:13,402 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:24:13,403 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:24:13,403 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:24:13,403 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:24:13,404 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:24:13,406 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:24:13,406 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 20:24:13,440 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:24:13,441 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:24:13,442 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:24:13,442 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:24:13,442 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:24:13,443 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:24:13,443 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:24:13,443 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:24:13,443 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:24:13,443 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:24:13,444 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:24:13,444 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:24:13,445 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:24:13,445 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:24:13,445 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:24:13,445 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:24:13,446 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:24:13,447 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:24:13,447 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:24:13,447 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:24:13,447 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:24:13,448 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:24:13,448 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:24:13,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:24:13,448 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:24:13,448 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:24:13,449 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:24:13,449 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:24:13,449 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:24:13,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:24:13,449 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:24:13,449 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:24:13,450 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:24:13,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:24:13,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:24:13,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:24:13,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:24:13,526 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:24:13,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58_true-unreach-call_false-termination.c [2018-07-23 20:24:13,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ace227bd/e0da9e1cd771400dbdd8a2954bb94c8d/FLAG5079d7694 [2018-07-23 20:24:14,167 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:24:14,170 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label58_true-unreach-call_false-termination.c [2018-07-23 20:24:14,194 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ace227bd/e0da9e1cd771400dbdd8a2954bb94c8d/FLAG5079d7694 [2018-07-23 20:24:14,221 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ace227bd/e0da9e1cd771400dbdd8a2954bb94c8d [2018-07-23 20:24:14,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:24:14,238 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:24:14,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:24:14,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:24:14,249 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:24:14,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:24:14" (1/1) ... [2018-07-23 20:24:14,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3187ccd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:14, skipping insertion in model container [2018-07-23 20:24:14,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:24:14" (1/1) ... [2018-07-23 20:24:14,547 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:24:14,860 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:24:14,878 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:24:15,064 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:24:15,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15 WrapperNode [2018-07-23 20:24:15,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:24:15,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:24:15,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:24:15,122 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:24:15,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:24:15,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:24:15,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:24:15,227 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:24:15,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (1/1) ... [2018-07-23 20:24:15,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:24:15,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:24:15,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:24:15,326 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:24:15,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (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 20:24:15,575 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 20:24:15,576 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 20:24:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:24:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:24:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:24:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:24:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:24:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:24:18,997 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:24:18,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:24:18 BoogieIcfgContainer [2018-07-23 20:24:18,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:24:18,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:24:19,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:24:19,006 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:24:19,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:24:14" (1/3) ... [2018-07-23 20:24:19,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe4c9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:24:19, skipping insertion in model container [2018-07-23 20:24:19,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:24:15" (2/3) ... [2018-07-23 20:24:19,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe4c9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:24:19, skipping insertion in model container [2018-07-23 20:24:19,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:24:18" (3/3) ... [2018-07-23 20:24:19,013 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label58_true-unreach-call_false-termination.c [2018-07-23 20:24:19,025 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:24:19,039 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:24:19,099 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:24:19,100 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:24:19,101 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:24:19,101 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:24:19,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:24:19,102 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:24:19,102 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:24:19,102 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:24:19,102 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:24:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:24:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 20:24:19,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:19,152 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] [2018-07-23 20:24:19,152 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 20:24:19,162 INFO L82 PathProgramCache]: Analyzing trace with hash -603411376, now seen corresponding path program 1 times [2018-07-23 20:24:19,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:19,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:19,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:19,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:19,221 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:19,961 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:24:20,133 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 20:24:20,137 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:24:20,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:24:20,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:24:20,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:24:20,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:24:20,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:24:20,177 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:24:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:22,286 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:24:22,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:24:22,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-07-23 20:24:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:22,322 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:24:22,322 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:24:22,330 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:24:22,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:24:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:24:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:24:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 20:24:22,422 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 106 [2018-07-23 20:24:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:22,424 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 20:24:22,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:24:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 20:24:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 20:24:22,433 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:22,434 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:24:22,435 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 20:24:22,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1691918279, now seen corresponding path program 1 times [2018-07-23 20:24:22,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:22,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:22,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:22,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:22,440 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:22,789 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:24:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:24:23,003 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:24:23,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:24:23,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:24:23,006 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:24:23,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:24:23,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:24:23,007 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-07-23 20:24:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:25,106 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-07-23 20:24:25,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:24:25,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-07-23 20:24:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:25,124 INFO L225 Difference]: With dead ends: 1079 [2018-07-23 20:24:25,125 INFO L226 Difference]: Without dead ends: 745 [2018-07-23 20:24:25,133 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:24:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-07-23 20:24:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-07-23 20:24:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-07-23 20:24:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-07-23 20:24:25,192 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 116 [2018-07-23 20:24:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:25,193 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-07-23 20:24:25,193 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:24:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-07-23 20:24:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 20:24:25,199 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:25,199 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:24:25,199 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 20:24:25,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1989392627, now seen corresponding path program 1 times [2018-07-23 20:24:25,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:25,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:25,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:25,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:25,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 20:24:25,482 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:25,483 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:24:25,485 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-07-23 20:24:25,488 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [47], [48], [52], [56], [60], [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], [483], [485], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:24:25,568 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:24:25,569 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:24:48,269 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:24:48,271 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 20:24:48,288 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:24:51,672 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.74% of their original sizes. [2018-07-23 20:24:51,672 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:24:53,206 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:24:53,208 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:24:53,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-07-23 20:24:53,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:24:53,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 20:24:53,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 20:24:53,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 20:24:53,210 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 12 states. [2018-07-23 20:25:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:25:07,746 INFO L93 Difference]: Finished difference Result 1521 states and 2423 transitions. [2018-07-23 20:25:07,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 20:25:07,747 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2018-07-23 20:25:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:25:07,753 INFO L225 Difference]: With dead ends: 1521 [2018-07-23 20:25:07,754 INFO L226 Difference]: Without dead ends: 794 [2018-07-23 20:25:07,758 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 20:25:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2018-07-23 20:25:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2018-07-23 20:25:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2018-07-23 20:25:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1232 transitions. [2018-07-23 20:25:07,820 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1232 transitions. Word has length 126 [2018-07-23 20:25:07,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:25:07,821 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1232 transitions. [2018-07-23 20:25:07,821 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 20:25:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1232 transitions. [2018-07-23 20:25:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 20:25:07,829 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:25:07,830 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-07-23 20:25:07,831 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 20:25:07,831 INFO L82 PathProgramCache]: Analyzing trace with hash -151877702, now seen corresponding path program 1 times [2018-07-23 20:25:07,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:25:07,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:25:07,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:25:07,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:25:07,833 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:25:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:25:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:25:08,325 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:25:08,326 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:25:08,326 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-07-23 20:25:08,327 INFO L201 CegarAbsIntRunner]: [0], [4], [7], [8], [12], [15], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [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], [483], [485], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:25:08,339 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:25:08,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:26:50,264 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:26:50,265 INFO L272 AbstractInterpreter]: Visited 108 different actions 173 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:26:50,285 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:26:59,856 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 80.42% of their original sizes. [2018-07-23 20:26:59,857 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:27:02,673 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:27:02,674 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:27:02,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:27:02,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:27:02,675 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:27:02,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:27:02,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:27:02,675 INFO L87 Difference]: Start difference. First operand 794 states and 1232 transitions. Second operand 17 states. [2018-07-23 20:27:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:27:46,141 INFO L93 Difference]: Finished difference Result 1705 states and 2683 transitions. [2018-07-23 20:27:46,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:27:46,141 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 128 [2018-07-23 20:27:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:27:46,146 INFO L225 Difference]: With dead ends: 1705 [2018-07-23 20:27:46,146 INFO L226 Difference]: Without dead ends: 793 [2018-07-23 20:27:46,150 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 143 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:27:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-07-23 20:27:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2018-07-23 20:27:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-07-23 20:27:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1153 transitions. [2018-07-23 20:27:46,180 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1153 transitions. Word has length 128 [2018-07-23 20:27:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:27:46,181 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1153 transitions. [2018-07-23 20:27:46,181 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:27:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1153 transitions. [2018-07-23 20:27:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-23 20:27:46,184 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:27:46,184 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-07-23 20:27:46,185 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 20:27:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1581317548, now seen corresponding path program 1 times [2018-07-23 20:27:46,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:27:46,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:27:46,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:27:46,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:27:46,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:27:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:27:46,420 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-23 20:27:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:27:46,508 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:27:46,508 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:27:46,508 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-07-23 20:27:46,509 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [47], [48], [52], [56], [60], [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], [483], [485], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:27:46,515 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:27:46,515 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:28:30,425 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:28:30,427 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:28:30,428 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:28:30,429 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:28:30,429 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 20:28:30,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:28:30,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:28:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:28:30,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:28:30,607 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:28:30,808 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:28:30,809 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:28:30,815 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:28:30,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:28:30 BoogieIcfgContainer [2018-07-23 20:28:30,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:28:30,817 INFO L168 Benchmark]: Toolchain (without parser) took 256579.87 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -660.8 MB). Peak memory consumption was 961.9 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:30,818 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:28:30,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.08 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:30,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:30,820 INFO L168 Benchmark]: Boogie Preprocessor took 98.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:28:30,821 INFO L168 Benchmark]: RCFGBuilder took 3672.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 734.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -718.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:30,822 INFO L168 Benchmark]: TraceAbstraction took 251816.75 ms. Allocated memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: 888.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 5.2 MB). Peak memory consumption was 893.9 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:30,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 881.08 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 104.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3672.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 734.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -718.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251816.75 ms. Allocated memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: 888.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 5.2 MB). Peak memory consumption was 893.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 473]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 473). Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 251.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 62.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 728 SDtfs, 2146 SDslu, 868 SDs, 0 SdLazy, 3204 SolverSat, 636 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 288 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 168.6s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9937411278874694 AbsIntWeakeningRatio, 0.25396825396825395 AbsIntAvgWeakeningVarsNumRemoved, 1073.079365079365 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 476 NumberOfCodeBlocks, 476 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 472 ConstructedInterpolants, 0 QuantifiedInterpolants, 140419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 35/50 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_label58_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-28-30-854.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label58_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-28-30-854.csv Completed graceful shutdown