java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 19:12:49,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 19:12:49,727 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 19:12:49,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 19:12:49,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 19:12:49,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 19:12:49,741 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 19:12:49,750 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 19:12:49,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 19:12:49,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 19:12:49,754 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 19:12:49,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 19:12:49,755 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 19:12:49,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 19:12:49,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 19:12:49,760 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 19:12:49,761 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 19:12:49,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 19:12:49,764 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 19:12:49,766 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 19:12:49,767 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 19:12:49,768 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 19:12:49,770 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 19:12:49,776 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 19:12:49,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 19:12:49,777 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 19:12:49,778 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 19:12:49,779 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 19:12:49,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 19:12:49,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 19:12:49,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 19:12:49,795 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 19:12:49,795 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 19:12:49,795 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 19:12:49,795 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 19:12:49,796 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 19:12:49,796 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 19:12:49,796 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 19:12:49,796 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 19:12:49,797 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 19:12:49,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 19:12:49,798 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 19:12:49,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 19:12:49,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 19:12:49,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 19:12:49,799 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 19:12:49,799 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 19:12:49,799 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 19:12:49,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 19:12:49,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 19:12:49,800 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 19:12:49,800 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 19:12:49,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 19:12:49,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 19:12:49,801 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 19:12:49,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 19:12:49,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 19:12:49,801 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 19:12:49,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 19:12:49,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 19:12:49,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 19:12:49,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 19:12:49,802 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 19:12:49,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 19:12:49,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 19:12:49,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 19:12:49,884 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 19:12:49,884 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 19:12:49,885 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-07-21 19:12:50,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/fe6a19bd3/ece0780886334955b4589adf3e24a692/FLAG4c900b4ea [2018-07-21 19:12:50,655 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 19:12:50,655 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label40_true-unreach-call.c [2018-07-21 19:12:50,710 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/fe6a19bd3/ece0780886334955b4589adf3e24a692/FLAG4c900b4ea [2018-07-21 19:12:50,731 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/fe6a19bd3/ece0780886334955b4589adf3e24a692 [2018-07-21 19:12:50,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 19:12:50,753 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 19:12:50,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 19:12:50,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 19:12:50,763 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 19:12:50,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:12:50" (1/1) ... [2018-07-21 19:12:50,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52fa1d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:50, skipping insertion in model container [2018-07-21 19:12:50,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:12:50" (1/1) ... [2018-07-21 19:12:51,045 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 19:12:51,726 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:12:51,745 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 19:12:52,095 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:12:52,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52 WrapperNode [2018-07-21 19:12:52,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 19:12:52,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 19:12:52,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 19:12:52,258 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 19:12:52,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 19:12:52,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 19:12:52,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 19:12:52,448 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 19:12:52,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:52,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... [2018-07-21 19:12:53,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 19:12:53,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 19:12:53,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 19:12:53,004 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 19:12:53,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 19:12:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 19:12:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 19:12:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 19:12:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 19:12:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 19:12:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 19:12:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 19:12:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 19:12:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 19:12:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 19:12:59,460 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 19:12:59,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:12:59 BoogieIcfgContainer [2018-07-21 19:12:59,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 19:12:59,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 19:12:59,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 19:12:59,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 19:12:59,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:12:50" (1/3) ... [2018-07-21 19:12:59,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62dbd30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:12:59, skipping insertion in model container [2018-07-21 19:12:59,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:12:52" (2/3) ... [2018-07-21 19:12:59,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62dbd30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:12:59, skipping insertion in model container [2018-07-21 19:12:59,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:12:59" (3/3) ... [2018-07-21 19:12:59,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label40_true-unreach-call.c [2018-07-21 19:12:59,488 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 19:12:59,505 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 19:12:59,576 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 19:12:59,577 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 19:12:59,577 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 19:12:59,577 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 19:12:59,577 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 19:12:59,578 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 19:12:59,578 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 19:12:59,578 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 19:12:59,578 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 19:12:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-21 19:12:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-21 19:12:59,646 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:12:59,647 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:12:59,647 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:12:59,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1337338660, now seen corresponding path program 1 times [2018-07-21 19:12:59,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:12:59,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:12:59,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:12:59,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:12:59,716 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:12:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:13:00,183 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 19:13:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:13:00,301 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:13:00,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 19:13:00,301 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:13:00,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 19:13:00,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 19:13:00,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 19:13:00,325 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-21 19:13:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:13:03,623 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-21 19:13:03,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 19:13:03,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-07-21 19:13:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:13:03,650 INFO L225 Difference]: With dead ends: 1156 [2018-07-21 19:13:03,650 INFO L226 Difference]: Without dead ends: 744 [2018-07-21 19:13:03,659 INFO L578 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 [2018-07-21 19:13:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-21 19:13:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-21 19:13:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-21 19:13:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-07-21 19:13:03,784 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 70 [2018-07-21 19:13:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:13:03,785 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-07-21 19:13:03,785 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 19:13:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-07-21 19:13:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-21 19:13:03,796 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:13:03,796 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 19:13:03,797 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:13:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1645170391, now seen corresponding path program 1 times [2018-07-21 19:13:03,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:13:03,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:13:03,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:13:03,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:13:03,799 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:13:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:13:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:13:04,110 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:13:04,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 19:13:04,110 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:13:04,112 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 19:13:04,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 19:13:04,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 19:13:04,113 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-07-21 19:13:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:13:11,166 INFO L93 Difference]: Finished difference Result 2181 states and 4000 transitions. [2018-07-21 19:13:11,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 19:13:11,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-07-21 19:13:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:13:11,184 INFO L225 Difference]: With dead ends: 2181 [2018-07-21 19:13:11,184 INFO L226 Difference]: Without dead ends: 1443 [2018-07-21 19:13:11,191 INFO L578 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 [2018-07-21 19:13:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2018-07-21 19:13:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1422. [2018-07-21 19:13:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2018-07-21 19:13:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2315 transitions. [2018-07-21 19:13:11,299 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2315 transitions. Word has length 163 [2018-07-21 19:13:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:13:11,302 INFO L471 AbstractCegarLoop]: Abstraction has 1422 states and 2315 transitions. [2018-07-21 19:13:11,302 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 19:13:11,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2315 transitions. [2018-07-21 19:13:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-21 19:13:11,309 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:13:11,309 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 19:13:11,310 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:13:11,310 INFO L82 PathProgramCache]: Analyzing trace with hash -797281582, now seen corresponding path program 1 times [2018-07-21 19:13:11,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:13:11,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:13:11,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:13:11,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:13:11,312 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:13:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:13:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:13:11,599 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:13:11,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 19:13:11,601 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:13:11,602 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 19:13:11,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 19:13:11,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 19:13:11,603 INFO L87 Difference]: Start difference. First operand 1422 states and 2315 transitions. Second operand 6 states. [2018-07-21 19:13:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:13:17,226 INFO L93 Difference]: Finished difference Result 4246 states and 6984 transitions. [2018-07-21 19:13:17,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 19:13:17,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-07-21 19:13:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:13:17,249 INFO L225 Difference]: With dead ends: 4246 [2018-07-21 19:13:17,250 INFO L226 Difference]: Without dead ends: 2830 [2018-07-21 19:13:17,261 INFO L578 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 [2018-07-21 19:13:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2018-07-21 19:13:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2795. [2018-07-21 19:13:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2018-07-21 19:13:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4146 transitions. [2018-07-21 19:13:17,389 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4146 transitions. Word has length 172 [2018-07-21 19:13:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:13:17,390 INFO L471 AbstractCegarLoop]: Abstraction has 2795 states and 4146 transitions. [2018-07-21 19:13:17,390 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 19:13:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4146 transitions. [2018-07-21 19:13:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-21 19:13:17,401 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:13:17,403 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:13:17,404 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:13:17,404 INFO L82 PathProgramCache]: Analyzing trace with hash -141742847, now seen corresponding path program 1 times [2018-07-21 19:13:17,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:13:17,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:13:17,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:13:17,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:13:17,405 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:13:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:13:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 126 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 19:13:17,704 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:13:17,704 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:13:17,705 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-07-21 19:13:17,707 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [824], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 19:13:17,778 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:13:17,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:13:28,670 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:13:30,037 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 19:13:30,039 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 19:13:30,082 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 19:13:41,810 INFO L232 lantSequenceWeakener]: Weakened 275 states. On average, predicates are now at 78.2% of their original sizes. [2018-07-21 19:13:41,810 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 19:13:42,931 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 19:13:42,932 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 19:13:42,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-07-21 19:13:42,933 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:13:42,934 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 19:13:42,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 19:13:42,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-21 19:13:42,934 INFO L87 Difference]: Start difference. First operand 2795 states and 4146 transitions. Second operand 8 states. [2018-07-21 19:15:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:15:24,644 INFO L93 Difference]: Finished difference Result 5924 states and 8826 transitions. [2018-07-21 19:15:24,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 19:15:24,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2018-07-21 19:15:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:15:24,662 INFO L225 Difference]: With dead ends: 5924 [2018-07-21 19:15:24,664 INFO L226 Difference]: Without dead ends: 3135 [2018-07-21 19:15:24,674 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-21 19:15:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2018-07-21 19:15:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3133. [2018-07-21 19:15:24,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2018-07-21 19:15:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4491 transitions. [2018-07-21 19:15:24,800 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4491 transitions. Word has length 283 [2018-07-21 19:15:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:15:24,801 INFO L471 AbstractCegarLoop]: Abstraction has 3133 states and 4491 transitions. [2018-07-21 19:15:24,801 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-21 19:15:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4491 transitions. [2018-07-21 19:15:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-21 19:15:24,813 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:15:24,813 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:15:24,814 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:15:24,814 INFO L82 PathProgramCache]: Analyzing trace with hash 974905503, now seen corresponding path program 1 times [2018-07-21 19:15:24,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:15:24,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:15:24,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:15:24,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:15:24,817 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:15:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:15:25,258 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 19:15:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 195 proven. 206 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-21 19:15:25,785 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:15:25,786 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:15:25,786 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 376 with the following transitions: [2018-07-21 19:15:25,787 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [784], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [824], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 19:15:25,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:15:25,799 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:15:31,676 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:15:43,377 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 19:15:43,378 INFO L272 AbstractInterpreter]: Visited 121 different actions 349 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 19:15:43,389 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 19:15:43,389 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:15:43,389 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 19:15:43,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:15:43,403 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:15:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:15:43,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:15:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 409 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-21 19:15:44,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:15:44,404 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-21 19:15:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 284 proven. 101 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-21 19:15:45,121 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:15:45,121 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-21 19:15:45,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:15:45,146 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:15:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:15:45,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:15:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-07-21 19:15:45,930 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:15:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 197 proven. 184 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-21 19:15:46,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-21 19:15:46,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-07-21 19:15:46,487 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:15:46,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 19:15:46,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 19:15:46,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-21 19:15:46,490 INFO L87 Difference]: Start difference. First operand 3133 states and 4491 transitions. Second operand 5 states. [2018-07-21 19:15:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:15:54,482 INFO L93 Difference]: Finished difference Result 7655 states and 11729 transitions. [2018-07-21 19:15:54,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 19:15:54,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 375 [2018-07-21 19:15:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:15:54,513 INFO L225 Difference]: With dead ends: 7655 [2018-07-21 19:15:54,514 INFO L226 Difference]: Without dead ends: 4866 [2018-07-21 19:15:54,524 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 1508 GetRequests, 1491 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-07-21 19:15:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2018-07-21 19:15:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4856. [2018-07-21 19:15:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2018-07-21 19:15:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6894 transitions. [2018-07-21 19:15:54,706 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6894 transitions. Word has length 375 [2018-07-21 19:15:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:15:54,706 INFO L471 AbstractCegarLoop]: Abstraction has 4856 states and 6894 transitions. [2018-07-21 19:15:54,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 19:15:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6894 transitions. [2018-07-21 19:15:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-07-21 19:15:54,728 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:15:54,729 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-21 19:15:54,729 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:15:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1715703816, now seen corresponding path program 1 times [2018-07-21 19:15:54,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:15:54,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:15:54,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:15:54,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:15:54,731 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:15:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:15:55,252 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 19:15:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 263 proven. 460 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-21 19:15:55,913 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:15:55,913 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:15:55,913 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 521 with the following transitions: [2018-07-21 19:15:55,914 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [204], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [668], [676], [684], [692], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [784], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [824], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [996], [1576], [1577], [1578], [1579], [1581], [1582] [2018-07-21 19:15:55,929 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:15:55,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:16:02,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-21 19:16:06,008 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-21 19:16:06,009 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-21 19:16:06,009 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-21 19:16:06,009 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:16:06,010 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-21 19:16:06,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:16:06,023 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 19:16:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:16:06,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:16:06,187 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-21 19:16:06,388 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 19:16:06,388 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 19:16:06,393 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 19:16:06,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:16:06 BoogieIcfgContainer [2018-07-21 19:16:06,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 19:16:06,394 INFO L168 Benchmark]: Toolchain (without parser) took 195648.25 ms. Allocated memory was 306.2 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 247.7 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-07-21 19:16:06,395 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 19:16:06,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1502.56 ms. Allocated memory was 306.2 MB in the beginning and 332.9 MB in the end (delta: 26.7 MB). Free memory was 246.7 MB in the beginning and 267.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 5.3 GB. [2018-07-21 19:16:06,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 189.52 ms. Allocated memory is still 332.9 MB. Free memory was 267.6 MB in the beginning and 244.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 5.3 GB. [2018-07-21 19:16:06,397 INFO L168 Benchmark]: Boogie Preprocessor took 556.25 ms. Allocated memory was 332.9 MB in the beginning and 540.0 MB in the end (delta: 207.1 MB). Free memory was 244.1 MB in the beginning and 490.7 MB in the end (delta: -246.6 MB). Peak memory consumption was 34.1 MB. Max. memory is 5.3 GB. [2018-07-21 19:16:06,397 INFO L168 Benchmark]: RCFGBuilder took 6456.76 ms. Allocated memory was 540.0 MB in the beginning and 542.6 MB in the end (delta: 2.6 MB). Free memory was 490.7 MB in the beginning and 407.4 MB in the end (delta: 83.3 MB). Peak memory consumption was 203.5 MB. Max. memory is 5.3 GB. [2018-07-21 19:16:06,398 INFO L168 Benchmark]: TraceAbstraction took 186931.71 ms. Allocated memory was 542.6 MB in the beginning and 2.6 GB in the end (delta: 2.1 GB). Free memory was 407.4 MB in the beginning and 1.4 GB in the end (delta: -972.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-21 19:16:06,403 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1502.56 ms. Allocated memory was 306.2 MB in the beginning and 332.9 MB in the end (delta: 26.7 MB). Free memory was 246.7 MB in the beginning and 267.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 189.52 ms. Allocated memory is still 332.9 MB. Free memory was 267.6 MB in the beginning and 244.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 556.25 ms. Allocated memory was 332.9 MB in the beginning and 540.0 MB in the end (delta: 207.1 MB). Free memory was 244.1 MB in the beginning and 490.7 MB in the end (delta: -246.6 MB). Peak memory consumption was 34.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 6456.76 ms. Allocated memory was 540.0 MB in the beginning and 542.6 MB in the end (delta: 2.6 MB). Free memory was 490.7 MB in the beginning and 407.4 MB in the end (delta: 83.3 MB). Peak memory consumption was 203.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 186931.71 ms. Allocated memory was 542.6 MB in the beginning and 2.6 GB in the end (delta: 2.1 GB). Free memory was 407.4 MB in the beginning and 1.4 GB in the end (delta: -972.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was analyzing trace of length 521 with TraceHistMax 5, 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 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 186.8s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 125.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 788 SDtfs, 6110 SDslu, 514 SDs, 0 SdLazy, 8655 SolverSat, 3022 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 99.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1818 GetRequests, 1774 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4856occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.0s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9964217802446295 AbsIntWeakeningRatio, 0.09219858156028368 AbsIntAvgWeakeningVarsNumRemoved, 25.893617021276597 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1813 NumberOfCodeBlocks, 1813 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2554 ConstructedInterpolants, 0 QuantifiedInterpolants, 2421978 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1206 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 2139/2729 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem16_label40_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_19-16-06-415.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem16_label40_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_19-16-06-415.csv Completed graceful shutdown