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_label28_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:18:36,631 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:18:36,634 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:18:36,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:18:36,653 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:18:36,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:18:36,656 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:18:36,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:18:36,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:18:36,660 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:18:36,662 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:18:36,662 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:18:36,663 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:18:36,664 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:18:36,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:18:36,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:18:36,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:18:36,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:18:36,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:18:36,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:18:36,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:18:36,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:18:36,678 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:18:36,679 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:18:36,679 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:18:36,680 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:18:36,682 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:18:36,683 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:18:36,684 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:18:36,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:18:36,685 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:18:36,686 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:18:36,687 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:18:36,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:18:36,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:18:36,689 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:18:36,690 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 20:18:36,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:18:36,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:18:36,710 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:18:36,710 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:18:36,711 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:18:36,711 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:18:36,711 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:18:36,711 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:18:36,714 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:18:36,714 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:18:36,714 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:18:36,716 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:18:36,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:18:36,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:18:36,717 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:18:36,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:18:36,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:18:36,718 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:18:36,718 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:18:36,720 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:18:36,720 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:18:36,720 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:18:36,720 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:18:36,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:18:36,721 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:18:36,721 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:18:36,721 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:18:36,721 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:18:36,722 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:18:36,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:18:36,722 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:18:36,722 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:18:36,722 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:18:36,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:18:36,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:18:36,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:18:36,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:18:36,818 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:18:36,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label28_true-unreach-call_false-termination.c [2018-07-23 20:18:37,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c15e18aa0/4a3486bad9394f79bd4c500b9d633932/FLAG9f92eed06 [2018-07-23 20:18:37,525 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:18:37,526 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label28_true-unreach-call_false-termination.c [2018-07-23 20:18:37,558 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c15e18aa0/4a3486bad9394f79bd4c500b9d633932/FLAG9f92eed06 [2018-07-23 20:18:37,575 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c15e18aa0/4a3486bad9394f79bd4c500b9d633932 [2018-07-23 20:18:37,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:18:37,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:18:37,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:18:37,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:18:37,599 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:18:37,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:18:37" (1/1) ... [2018-07-23 20:18:37,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f83590b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:37, skipping insertion in model container [2018-07-23 20:18:37,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:18:37" (1/1) ... [2018-07-23 20:18:37,872 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:18:38,179 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:18:38,200 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:18:38,364 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:18:38,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38 WrapperNode [2018-07-23 20:18:38,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:18:38,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:18:38,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:18:38,423 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:18:38,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:18:38,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:18:38,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:18:38,533 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:18:38,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (1/1) ... [2018-07-23 20:18:38,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:18:38,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:18:38,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:18:38,881 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:18:38,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (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 20:18:38,977 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 20:18:38,978 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 20:18:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:18:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:18:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:18:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:18:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:18:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:18:42,563 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:18:42,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:18:42 BoogieIcfgContainer [2018-07-23 20:18:42,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:18:42,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:18:42,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:18:42,576 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:18:42,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:18:37" (1/3) ... [2018-07-23 20:18:42,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71252deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:18:42, skipping insertion in model container [2018-07-23 20:18:42,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:18:38" (2/3) ... [2018-07-23 20:18:42,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71252deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:18:42, skipping insertion in model container [2018-07-23 20:18:42,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:18:42" (3/3) ... [2018-07-23 20:18:42,583 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label28_true-unreach-call_false-termination.c [2018-07-23 20:18:42,600 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:18:42,615 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:18:42,694 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:18:42,695 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:18:42,695 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:18:42,696 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:18:42,696 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:18:42,696 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:18:42,696 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:18:42,697 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:18:42,697 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:18:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:18:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 20:18:42,746 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:18:42,748 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] [2018-07-23 20:18:42,748 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 20:18:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 410204184, now seen corresponding path program 1 times [2018-07-23 20:18:42,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:18:42,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:42,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:18:42,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:42,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:18:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:18:43,519 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:18:43,670 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 20:18:43,674 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:18:43,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:18:43,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:18:43,686 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:18:43,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:18:43,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:18:43,712 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:18:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:18:45,346 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:18:45,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:18:45,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2018-07-23 20:18:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:18:45,371 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:18:45,372 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:18:45,380 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 20:18:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:18:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:18:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:18:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 20:18:45,479 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 100 [2018-07-23 20:18:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:18:45,480 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 20:18:45,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:18:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 20:18:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 20:18:45,489 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:18:45,490 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] [2018-07-23 20:18:45,490 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 20:18:45,491 INFO L82 PathProgramCache]: Analyzing trace with hash 725668047, now seen corresponding path program 1 times [2018-07-23 20:18:45,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:18:45,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:45,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:18:45,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:45,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:18:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:18:45,769 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:18:45,967 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 20:18:45,968 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:18:45,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:18:45,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:18:45,971 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:18:45,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:18:45,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:18:45,973 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-07-23 20:18:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:18:48,263 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-07-23 20:18:48,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:18:48,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-07-23 20:18:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:18:48,277 INFO L225 Difference]: With dead ends: 1079 [2018-07-23 20:18:48,277 INFO L226 Difference]: Without dead ends: 745 [2018-07-23 20:18:48,281 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 20:18:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-07-23 20:18:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-07-23 20:18:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-07-23 20:18:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-07-23 20:18:48,348 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 110 [2018-07-23 20:18:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:18:48,349 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-07-23 20:18:48,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:18:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-07-23 20:18:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 20:18:48,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:18:48,363 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] [2018-07-23 20:18:48,363 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 20:18:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1998505221, now seen corresponding path program 1 times [2018-07-23 20:18:48,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:18:48,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:48,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:18:48,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:48,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:18:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:18:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:18:48,576 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:18:48,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:18:48,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:18:48,577 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:18:48,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:18:48,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:18:48,578 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 3 states. [2018-07-23 20:18:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:18:50,644 INFO L93 Difference]: Finished difference Result 2097 states and 3420 transitions. [2018-07-23 20:18:50,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:18:50,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2018-07-23 20:18:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:18:50,657 INFO L225 Difference]: With dead ends: 2097 [2018-07-23 20:18:50,658 INFO L226 Difference]: Without dead ends: 1370 [2018-07-23 20:18:50,663 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 20:18:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2018-07-23 20:18:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2018-07-23 20:18:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2018-07-23 20:18:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2084 transitions. [2018-07-23 20:18:50,739 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2084 transitions. Word has length 120 [2018-07-23 20:18:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:18:50,740 INFO L471 AbstractCegarLoop]: Abstraction has 1370 states and 2084 transitions. [2018-07-23 20:18:50,740 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:18:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2084 transitions. [2018-07-23 20:18:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 20:18:50,752 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:18:50,752 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-23 20:18:50,754 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 20:18:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash -284431770, now seen corresponding path program 1 times [2018-07-23 20:18:50,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:18:50,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:50,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:18:50,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:18:50,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:18:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:18:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:18:51,148 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:18:51,148 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:18:51,150 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-07-23 20:18:51,154 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [16], [20], [24], [28], [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], [435], [437], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:18:51,233 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:18:51,234 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:20:23,314 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:20:23,316 INFO L272 AbstractInterpreter]: Visited 104 different actions 169 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 20:20:23,370 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:20:38,317 INFO L232 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 80.32% of their original sizes. [2018-07-23 20:20:38,318 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:20:41,661 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:20:41,662 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:20:41,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:20:41,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:20:41,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:20:41,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:20:41,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:20:41,664 INFO L87 Difference]: Start difference. First operand 1370 states and 2084 transitions. Second operand 17 states. [2018-07-23 20:21:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:21:39,704 INFO L93 Difference]: Finished difference Result 2979 states and 4572 transitions. [2018-07-23 20:21:39,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:21:39,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 136 [2018-07-23 20:21:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:21:39,713 INFO L225 Difference]: With dead ends: 2979 [2018-07-23 20:21:39,713 INFO L226 Difference]: Without dead ends: 1430 [2018-07-23 20:21:39,719 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 151 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:21:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2018-07-23 20:21:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2018-07-23 20:21:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2018-07-23 20:21:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2004 transitions. [2018-07-23 20:21:39,769 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2004 transitions. Word has length 136 [2018-07-23 20:21:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:21:39,770 INFO L471 AbstractCegarLoop]: Abstraction has 1430 states and 2004 transitions. [2018-07-23 20:21:39,770 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:21:39,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2004 transitions. [2018-07-23 20:21:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-23 20:21:39,776 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:21:39,776 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] [2018-07-23 20:21:39,776 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 20:21:39,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1166096511, now seen corresponding path program 1 times [2018-07-23 20:21:39,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:21:39,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:39,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:21:39,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:21:39,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:21:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:21:39,996 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 20:21:39,997 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:21:39,997 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:21:39,997 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-07-23 20:21:39,998 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], [435], [437], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:21:40,006 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:21:40,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:22:37,085 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:22:37,086 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:22:37,088 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:22:37,088 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:22:37,088 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 20:22:37,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:22:37,099 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:22:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:22:37,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:22:37,268 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:22:37,469 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:22:37,470 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:22:37,475 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:22:37,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:22:37 BoogieIcfgContainer [2018-07-23 20:22:37,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:22:37,477 INFO L168 Benchmark]: Toolchain (without parser) took 239888.25 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -143.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-23 20:22:37,478 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 20:22:37,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.83 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 20:22:37,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.71 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 20:22:37,480 INFO L168 Benchmark]: Boogie Preprocessor took 347.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:22:37,481 INFO L168 Benchmark]: RCFGBuilder took 3686.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-23 20:22:37,482 INFO L168 Benchmark]: TraceAbstraction took 234906.69 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 522.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-23 20:22:37,495 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 830.83 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 109.71 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 347.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3686.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234906.69 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 522.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 455]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 455). Cancelled while BasicCegarLoop was analyzing trace of length 150 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, 234.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 64.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 603 SDtfs, 1900 SDslu, 763 SDs, 0 SdLazy, 3456 SolverSat, 704 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 169 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1430occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 149.3s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9934443153955349 AbsIntWeakeningRatio, 0.25925925925925924 AbsIntAvgWeakeningVarsNumRemoved, 180.5037037037037 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, 1.4s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 136245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 64/66 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_label28_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-22-37-518.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label28_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-22-37-518.csv Completed graceful shutdown