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/Problem11_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 21:58:01,753 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 21:58:01,755 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 21:58:01,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 21:58:01,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 21:58:01,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 21:58:01,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 21:58:01,776 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 21:58:01,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 21:58:01,780 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 21:58:01,781 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 21:58:01,781 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 21:58:01,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 21:58:01,788 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 21:58:01,791 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 21:58:01,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 21:58:01,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 21:58:01,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 21:58:01,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 21:58:01,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 21:58:01,807 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 21:58:01,808 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 21:58:01,813 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 21:58:01,814 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 21:58:01,814 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 21:58:01,815 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 21:58:01,817 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 21:58:01,818 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 21:58:01,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 21:58:01,822 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 21:58:01,823 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 21:58:01,823 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 21:58:01,823 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 21:58:01,824 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 21:58:01,825 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 21:58:01,826 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 21:58:01,826 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 21:58:01,842 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 21:58:01,842 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 21:58:01,843 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 21:58:01,843 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 21:58:01,843 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 21:58:01,843 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 21:58:01,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 21:58:01,844 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 21:58:01,844 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 21:58:01,844 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 21:58:01,844 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 21:58:01,845 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 21:58:01,845 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 21:58:01,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 21:58:01,846 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 21:58:01,846 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 21:58:01,846 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 21:58:01,846 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 21:58:01,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 21:58:01,847 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 21:58:01,847 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 21:58:01,847 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 21:58:01,847 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 21:58:01,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 21:58:01,848 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 21:58:01,848 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 21:58:01,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 21:58:01,848 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 21:58:01,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 21:58:01,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 21:58:01,849 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 21:58:01,849 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 21:58:01,849 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 21:58:01,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 21:58:01,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 21:58:01,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 21:58:01,911 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 21:58:01,911 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 21:58:01,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04_true-unreach-call.c [2018-07-23 21:58:02,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ffa030a/f70776a33d0d4e6fa649c6d3f6ddf18d/FLAGacf5b4168 [2018-07-23 21:58:02,635 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 21:58:02,636 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label04_true-unreach-call.c [2018-07-23 21:58:02,664 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ffa030a/f70776a33d0d4e6fa649c6d3f6ddf18d/FLAGacf5b4168 [2018-07-23 21:58:02,685 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ffa030a/f70776a33d0d4e6fa649c6d3f6ddf18d [2018-07-23 21:58:02,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 21:58:02,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 21:58:02,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 21:58:02,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 21:58:02,710 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 21:58:02,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 09:58:02" (1/1) ... [2018-07-23 21:58:02,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66832ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:02, skipping insertion in model container [2018-07-23 21:58:02,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 09:58:02" (1/1) ... [2018-07-23 21:58:02,937 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 21:58:03,316 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 21:58:03,333 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 21:58:03,501 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 21:58:03,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03 WrapperNode [2018-07-23 21:58:03,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 21:58:03,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 21:58:03,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 21:58:03,628 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 21:58:03,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:03,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:03,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 21:58:03,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 21:58:03,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 21:58:03,842 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 21:58:03,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:03,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:03,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:03,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:04,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:04,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:04,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (1/1) ... [2018-07-23 21:58:04,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 21:58:04,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 21:58:04,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 21:58:04,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 21:58:04,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (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 21:58:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 21:58:04,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 21:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 21:58:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 21:58:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 21:58:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 21:58:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 21:58:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 21:58:09,518 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 21:58:09,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 09:58:09 BoogieIcfgContainer [2018-07-23 21:58:09,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 21:58:09,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 21:58:09,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 21:58:09,529 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 21:58:09,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 09:58:02" (1/3) ... [2018-07-23 21:58:09,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6384ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 09:58:09, skipping insertion in model container [2018-07-23 21:58:09,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:58:03" (2/3) ... [2018-07-23 21:58:09,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6384ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 09:58:09, skipping insertion in model container [2018-07-23 21:58:09,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 09:58:09" (3/3) ... [2018-07-23 21:58:09,534 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label04_true-unreach-call.c [2018-07-23 21:58:09,547 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 21:58:09,560 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 21:58:09,619 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 21:58:09,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 21:58:09,622 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 21:58:09,622 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 21:58:09,622 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 21:58:09,623 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 21:58:09,623 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 21:58:09,623 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 21:58:09,624 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 21:58:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-23 21:58:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 21:58:09,680 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:58:09,681 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] [2018-07-23 21:58:09,682 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:58:09,686 INFO L82 PathProgramCache]: Analyzing trace with hash 244570780, now seen corresponding path program 1 times [2018-07-23 21:58:09,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:58:09,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:09,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:58:09,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:09,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:58:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:58:10,204 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 21:58:10,331 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 21:58:10,333 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:58:10,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 21:58:10,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:58:10,342 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 21:58:10,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 21:58:10,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 21:58:10,361 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-07-23 21:58:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:58:12,896 INFO L93 Difference]: Finished difference Result 785 states and 1378 transitions. [2018-07-23 21:58:12,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 21:58:12,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-07-23 21:58:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:58:12,926 INFO L225 Difference]: With dead ends: 785 [2018-07-23 21:58:12,926 INFO L226 Difference]: Without dead ends: 490 [2018-07-23 21:58:12,934 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 21:58:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-07-23 21:58:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 482. [2018-07-23 21:58:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-07-23 21:58:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 841 transitions. [2018-07-23 21:58:13,023 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 841 transitions. Word has length 60 [2018-07-23 21:58:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:58:13,024 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 841 transitions. [2018-07-23 21:58:13,024 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 21:58:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 841 transitions. [2018-07-23 21:58:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 21:58:13,033 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:58:13,034 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:58:13,034 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:58:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1470043208, now seen corresponding path program 1 times [2018-07-23 21:58:13,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:58:13,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:13,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:58:13,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:13,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:58:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:58:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 21:58:13,361 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:58:13,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 21:58:13,362 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:58:13,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 21:58:13,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 21:58:13,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 21:58:13,365 INFO L87 Difference]: Start difference. First operand 482 states and 841 transitions. Second operand 6 states. [2018-07-23 21:58:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:58:18,402 INFO L93 Difference]: Finished difference Result 1365 states and 2430 transitions. [2018-07-23 21:58:18,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 21:58:18,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-07-23 21:58:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:58:18,413 INFO L225 Difference]: With dead ends: 1365 [2018-07-23 21:58:18,413 INFO L226 Difference]: Without dead ends: 889 [2018-07-23 21:58:18,417 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 21:58:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2018-07-23 21:58:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 872. [2018-07-23 21:58:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2018-07-23 21:58:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1432 transitions. [2018-07-23 21:58:18,479 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1432 transitions. Word has length 130 [2018-07-23 21:58:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:58:18,480 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1432 transitions. [2018-07-23 21:58:18,482 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 21:58:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1432 transitions. [2018-07-23 21:58:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-23 21:58:18,492 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:58:18,492 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:58:18,492 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:58:18,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2023442539, now seen corresponding path program 1 times [2018-07-23 21:58:18,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:58:18,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:18,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:58:18,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:18,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:58:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:58:18,761 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 21:58:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 21:58:18,885 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:58:18,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 21:58:18,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:58:18,886 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 21:58:18,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 21:58:18,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 21:58:18,887 INFO L87 Difference]: Start difference. First operand 872 states and 1432 transitions. Second operand 6 states. [2018-07-23 21:58:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:58:22,551 INFO L93 Difference]: Finished difference Result 2142 states and 3584 transitions. [2018-07-23 21:58:22,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 21:58:22,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-07-23 21:58:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:58:22,562 INFO L225 Difference]: With dead ends: 2142 [2018-07-23 21:58:22,562 INFO L226 Difference]: Without dead ends: 1276 [2018-07-23 21:58:22,567 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 21:58:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2018-07-23 21:58:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1259. [2018-07-23 21:58:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2018-07-23 21:58:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1967 transitions. [2018-07-23 21:58:22,622 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1967 transitions. Word has length 133 [2018-07-23 21:58:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:58:22,623 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1967 transitions. [2018-07-23 21:58:22,623 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 21:58:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1967 transitions. [2018-07-23 21:58:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 21:58:22,631 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:58:22,631 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:58:22,631 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:58:22,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1493714688, now seen corresponding path program 1 times [2018-07-23 21:58:22,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:58:22,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:22,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:58:22,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:22,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:58:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:58:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 21:58:23,023 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:58:23,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 21:58:23,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:58:23,024 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 21:58:23,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 21:58:23,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 21:58:23,025 INFO L87 Difference]: Start difference. First operand 1259 states and 1967 transitions. Second operand 7 states. [2018-07-23 21:58:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:58:31,667 INFO L93 Difference]: Finished difference Result 3961 states and 6546 transitions. [2018-07-23 21:58:31,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 21:58:31,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2018-07-23 21:58:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:58:31,700 INFO L225 Difference]: With dead ends: 3961 [2018-07-23 21:58:31,700 INFO L226 Difference]: Without dead ends: 2708 [2018-07-23 21:58:31,711 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-23 21:58:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2018-07-23 21:58:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2340. [2018-07-23 21:58:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2018-07-23 21:58:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3408 transitions. [2018-07-23 21:58:31,821 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3408 transitions. Word has length 134 [2018-07-23 21:58:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:58:31,822 INFO L471 AbstractCegarLoop]: Abstraction has 2340 states and 3408 transitions. [2018-07-23 21:58:31,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 21:58:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3408 transitions. [2018-07-23 21:58:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 21:58:31,826 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:58:31,826 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:58:31,827 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:58:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1425479737, now seen corresponding path program 1 times [2018-07-23 21:58:31,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:58:31,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:31,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:58:31,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:31,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:58:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:58:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 21:58:32,002 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:58:32,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 21:58:32,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:58:32,003 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 21:58:32,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 21:58:32,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 21:58:32,004 INFO L87 Difference]: Start difference. First operand 2340 states and 3408 transitions. Second operand 3 states. [2018-07-23 21:58:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:58:33,686 INFO L93 Difference]: Finished difference Result 5409 states and 8248 transitions. [2018-07-23 21:58:33,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 21:58:33,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-07-23 21:58:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:58:33,711 INFO L225 Difference]: With dead ends: 5409 [2018-07-23 21:58:33,711 INFO L226 Difference]: Without dead ends: 3075 [2018-07-23 21:58:33,720 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 21:58:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2018-07-23 21:58:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2018-07-23 21:58:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2018-07-23 21:58:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4304 transitions. [2018-07-23 21:58:33,813 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4304 transitions. Word has length 192 [2018-07-23 21:58:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:58:33,814 INFO L471 AbstractCegarLoop]: Abstraction has 3075 states and 4304 transitions. [2018-07-23 21:58:33,814 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 21:58:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4304 transitions. [2018-07-23 21:58:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 21:58:33,819 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:58:33,820 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:58:33,820 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:58:33,820 INFO L82 PathProgramCache]: Analyzing trace with hash 696570242, now seen corresponding path program 1 times [2018-07-23 21:58:33,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:58:33,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:33,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:58:33,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:58:33,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:58:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:58:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 21:58:34,174 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 21:58:34,174 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 21:58:34,175 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-07-23 21:58:34,177 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [381], [383], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-07-23 21:58:34,279 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 21:58:34,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:00:55,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:00:55,834 INFO L272 AbstractInterpreter]: Visited 155 different actions 304 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-07-23 22:00:55,845 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:01:48,344 INFO L232 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 73.86% of their original sizes. [2018-07-23 22:01:48,344 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:01:52,085 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:01:52,086 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:01:52,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-07-23 22:01:52,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:01:52,087 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:01:52,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:01:52,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:01:52,088 INFO L87 Difference]: Start difference. First operand 3075 states and 4304 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown