java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:31:12,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:31:12,908 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:31:12,922 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:31:12,922 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:31:12,924 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:31:12,925 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:31:12,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:31:12,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:31:12,941 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:31:12,942 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:31:12,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:31:12,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:31:12,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:31:12,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:31:12,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:31:12,949 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:31:12,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:31:12,953 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:31:12,955 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:31:12,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:31:12,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:31:12,959 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:31:12,959 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:31:12,959 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:31:12,960 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:31:12,961 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:31:12,962 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:31:12,963 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:31:12,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:31:12,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:31:12,965 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:31:12,965 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:31:12,965 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:31:12,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:31:12,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:31:12,967 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:31:12,996 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:31:12,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:31:12,997 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:31:12,997 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:31:12,998 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:31:12,998 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:31:12,998 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:31:12,998 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:31:12,998 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:31:12,999 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:31:12,999 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:31:12,999 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:31:13,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:31:13,000 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:31:13,000 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:31:13,000 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:31:13,000 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:31:13,001 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:31:13,001 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:31:13,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:31:13,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:31:13,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:31:13,002 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:31:13,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:31:13,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:31:13,002 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:31:13,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:31:13,003 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:31:13,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:31:13,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:31:13,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:31:13,003 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:31:13,003 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:31:13,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:31:13,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:31:13,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:31:13,070 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:31:13,071 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:31:13,072 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-09-10 12:31:13,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b015766a6/199d55ef871641f2a5ae48e1883e29b8/FLAGb36d95ef5 [2018-09-10 12:31:13,791 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:31:13,792 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-09-10 12:31:13,823 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b015766a6/199d55ef871641f2a5ae48e1883e29b8/FLAGb36d95ef5 [2018-09-10 12:31:13,845 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b015766a6/199d55ef871641f2a5ae48e1883e29b8 [2018-09-10 12:31:13,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:31:13,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:31:13,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:31:13,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:31:13,872 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:31:13,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:31:13" (1/1) ... [2018-09-10 12:31:13,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a96985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:13, skipping insertion in model container [2018-09-10 12:31:13,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:31:13" (1/1) ... [2018-09-10 12:31:14,180 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:31:14,962 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:31:14,981 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:31:15,460 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:31:15,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15 WrapperNode [2018-09-10 12:31:15,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:31:15,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:31:15,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:31:15,705 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:31:15,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:15,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:15,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:31:15,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:31:15,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:31:15,986 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:31:16,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:16,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:31:16,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:31:16,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:31:16,898 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:31:16,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:31:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:31:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:31:16,974 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 [2018-09-10 12:31:16,974 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 [2018-09-10 12:31:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:31:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:31:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:31:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:31:16,975 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_output2 [2018-09-10 12:31:16,976 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_output2 [2018-09-10 12:31:25,927 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:31:25,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:31:25 BoogieIcfgContainer [2018-09-10 12:31:25,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:31:25,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:31:25,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:31:25,933 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:31:25,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:31:13" (1/3) ... [2018-09-10 12:31:25,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ede2e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:31:25, skipping insertion in model container [2018-09-10 12:31:25,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15" (2/3) ... [2018-09-10 12:31:25,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ede2e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:31:25, skipping insertion in model container [2018-09-10 12:31:25,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:31:25" (3/3) ... [2018-09-10 12:31:25,937 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45_true-unreach-call.c [2018-09-10 12:31:25,947 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:31:25,956 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:31:26,014 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:31:26,015 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:31:26,015 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:31:26,015 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:31:26,015 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:31:26,015 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:31:26,015 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:31:26,015 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:31:26,015 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:31:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:31:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-10 12:31:26,069 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:26,070 INFO L376 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] [2018-09-10 12:31:26,071 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:26,076 INFO L82 PathProgramCache]: Analyzing trace with hash -850091047, now seen corresponding path program 1 times [2018-09-10 12:31:26,078 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:26,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:26,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:26,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:26,126 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:26,686 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:31:26,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:31:26,690 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:26,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:31:26,719 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:31:26,720 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:31:26,723 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:31:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:38,223 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-09-10 12:31:38,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:31:38,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-09-10 12:31:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:38,257 INFO L225 Difference]: With dead ends: 2118 [2018-09-10 12:31:38,258 INFO L226 Difference]: Without dead ends: 1508 [2018-09-10 12:31:38,271 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:31:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-09-10 12:31:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-09-10 12:31:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-09-10 12:31:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-09-10 12:31:38,398 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 57 [2018-09-10 12:31:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:38,399 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-09-10 12:31:38,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:31:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-09-10 12:31:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-10 12:31:38,408 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:38,409 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:31:38,409 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:38,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1103404969, now seen corresponding path program 1 times [2018-09-10 12:31:38,410 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:38,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:38,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:38,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:38,411 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:38,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:31:38,821 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:31:38,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:38,838 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:31:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:38,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:31:45,416 WARN L175 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-10 12:31:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:45,605 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:31:46,563 WARN L175 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-09-10 12:31:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:46,999 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:31:46,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-10 12:31:46,999 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:47,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:31:47,003 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:31:47,003 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:31:47,003 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-09-10 12:32:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:31,055 INFO L93 Difference]: Finished difference Result 3453 states and 5550 transitions. [2018-09-10 12:32:31,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:32:31,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-10 12:32:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:31,077 INFO L225 Difference]: With dead ends: 3453 [2018-09-10 12:32:31,078 INFO L226 Difference]: Without dead ends: 2420 [2018-09-10 12:32:31,085 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:32:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2018-09-10 12:32:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2412. [2018-09-10 12:32:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2018-09-10 12:32:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3754 transitions. [2018-09-10 12:32:31,185 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3754 transitions. Word has length 132 [2018-09-10 12:32:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:31,186 INFO L480 AbstractCegarLoop]: Abstraction has 2412 states and 3754 transitions. [2018-09-10 12:32:31,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:32:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3754 transitions. [2018-09-10 12:32:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-10 12:32:31,201 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:31,201 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:31,202 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:31,202 INFO L82 PathProgramCache]: Analyzing trace with hash -373950294, now seen corresponding path program 1 times [2018-09-10 12:32:31,202 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:31,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:31,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:31,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:31,205 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:31,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:31,551 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:31,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:31,570 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:31,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:31,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:32,095 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:32:32,096 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-10 12:32:32,096 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:32,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:32:32,097 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:32:32,097 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:32:32,099 INFO L87 Difference]: Start difference. First operand 2412 states and 3754 transitions. Second operand 3 states. [2018-09-10 12:32:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:40,528 INFO L93 Difference]: Finished difference Result 6995 states and 11104 transitions. [2018-09-10 12:32:40,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:32:40,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-09-10 12:32:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:40,561 INFO L225 Difference]: With dead ends: 6995 [2018-09-10 12:32:40,561 INFO L226 Difference]: Without dead ends: 4589 [2018-09-10 12:32:40,575 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 289 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:32:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2018-09-10 12:32:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4588. [2018-09-10 12:32:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4588 states. [2018-09-10 12:32:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7097 transitions. [2018-09-10 12:32:40,713 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7097 transitions. Word has length 145 [2018-09-10 12:32:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:40,714 INFO L480 AbstractCegarLoop]: Abstraction has 4588 states and 7097 transitions. [2018-09-10 12:32:40,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:32:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7097 transitions. [2018-09-10 12:32:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-10 12:32:40,721 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:40,721 INFO L376 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, 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] [2018-09-10 12:32:40,721 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1293578818, now seen corresponding path program 1 times [2018-09-10 12:32:40,722 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:40,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:40,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:40,725 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:32:41,024 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:41,024 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:41,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:41,032 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:41,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:41,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:41,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:41,550 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:32:41,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:41,581 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:41,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:32:42,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:32:42,657 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 12:32:42,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-10 12:32:42,657 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:42,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:32:42,658 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:32:42,659 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:32:42,659 INFO L87 Difference]: Start difference. First operand 4588 states and 7097 transitions. Second operand 5 states. [2018-09-10 12:32:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:49,931 INFO L93 Difference]: Finished difference Result 11436 states and 17866 transitions. [2018-09-10 12:32:49,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:32:49,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2018-09-10 12:32:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:49,963 INFO L225 Difference]: With dead ends: 11436 [2018-09-10 12:32:49,963 INFO L226 Difference]: Without dead ends: 6854 [2018-09-10 12:32:49,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 876 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:32:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2018-09-10 12:32:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6854. [2018-09-10 12:32:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6854 states. [2018-09-10 12:32:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6854 states to 6854 states and 9674 transitions. [2018-09-10 12:32:50,161 INFO L78 Accepts]: Start accepts. Automaton has 6854 states and 9674 transitions. Word has length 222 [2018-09-10 12:32:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:50,161 INFO L480 AbstractCegarLoop]: Abstraction has 6854 states and 9674 transitions. [2018-09-10 12:32:50,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6854 states and 9674 transitions. [2018-09-10 12:32:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-10 12:32:50,173 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:50,174 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:50,174 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2017104887, now seen corresponding path program 1 times [2018-09-10 12:32:50,175 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:50,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:50,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:50,176 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:50,454 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:50,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:32:50,454 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:50,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:32:50,455 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:32:50,455 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:32:50,455 INFO L87 Difference]: Start difference. First operand 6854 states and 9674 transitions. Second operand 6 states. [2018-09-10 12:33:10,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:10,929 INFO L93 Difference]: Finished difference Result 24569 states and 36683 transitions. [2018-09-10 12:33:10,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:33:10,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-09-10 12:33:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:11,020 INFO L225 Difference]: With dead ends: 24569 [2018-09-10 12:33:11,021 INFO L226 Difference]: Without dead ends: 17721 [2018-09-10 12:33:11,059 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:33:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2018-09-10 12:33:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 17699. [2018-09-10 12:33:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17699 states. [2018-09-10 12:33:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17699 states to 17699 states and 24043 transitions. [2018-09-10 12:33:11,527 INFO L78 Accepts]: Start accepts. Automaton has 17699 states and 24043 transitions. Word has length 223 [2018-09-10 12:33:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:11,528 INFO L480 AbstractCegarLoop]: Abstraction has 17699 states and 24043 transitions. [2018-09-10 12:33:11,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:33:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 17699 states and 24043 transitions. [2018-09-10 12:33:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-10 12:33:11,535 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:11,535 INFO L376 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, 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] [2018-09-10 12:33:11,535 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:11,536 INFO L82 PathProgramCache]: Analyzing trace with hash 90857531, now seen corresponding path program 1 times [2018-09-10 12:33:11,536 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:11,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:11,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:11,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:11,537 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-10 12:33:11,734 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:33:11,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:33:11,734 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:11,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:33:11,735 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:33:11,735 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:33:11,735 INFO L87 Difference]: Start difference. First operand 17699 states and 24043 transitions. Second operand 3 states. [2018-09-10 12:33:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:17,266 INFO L93 Difference]: Finished difference Result 40254 states and 56861 transitions. [2018-09-10 12:33:17,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:33:17,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-09-10 12:33:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:17,379 INFO L225 Difference]: With dead ends: 40254 [2018-09-10 12:33:17,379 INFO L226 Difference]: Without dead ends: 22561 [2018-09-10 12:33:17,450 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:33:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22561 states. [2018-09-10 12:33:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22561 to 22554. [2018-09-10 12:33:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22554 states. [2018-09-10 12:33:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 31327 transitions. [2018-09-10 12:33:18,027 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 31327 transitions. Word has length 234 [2018-09-10 12:33:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:18,028 INFO L480 AbstractCegarLoop]: Abstraction has 22554 states and 31327 transitions. [2018-09-10 12:33:18,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:33:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 31327 transitions. [2018-09-10 12:33:18,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-10 12:33:18,041 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:18,042 INFO L376 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, 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] [2018-09-10 12:33:18,042 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:18,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1985713205, now seen corresponding path program 1 times [2018-09-10 12:33:18,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:18,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:18,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:18,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:18,044 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 80 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-10 12:33:18,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:18,931 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:33:18,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:18,941 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:19,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:33:19,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:22,613 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:22,614 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:33:22,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:22,636 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:22,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:33:25,183 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:25,506 WARN L175 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-10 12:33:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:26,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:33:26,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 17 [2018-09-10 12:33:26,187 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:33:26,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 12:33:26,189 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 12:33:26,189 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-09-10 12:33:26,189 INFO L87 Difference]: Start difference. First operand 22554 states and 31327 transitions. Second operand 11 states. Received shutdown request... [2018-09-10 12:35:35,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:35:35,033 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:35:35,039 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:35:35,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:35:35 BoogieIcfgContainer [2018-09-10 12:35:35,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:35:35,040 INFO L168 Benchmark]: Toolchain (without parser) took 261181.56 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 118.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:35,041 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:35:35,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1841.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:35,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:35,044 INFO L168 Benchmark]: Boogie Preprocessor took 912.12 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 943.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:35,045 INFO L168 Benchmark]: RCFGBuilder took 9030.89 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 487.9 MB). Peak memory consumption was 487.9 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:35,045 INFO L168 Benchmark]: TraceAbstraction took 249110.22 ms. Allocated memory was 2.5 GB in the beginning and 3.1 GB in the end (delta: 592.4 MB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -971.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:35:35,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1841.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 912.12 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 943.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9030.89 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 487.9 MB). Peak memory consumption was 487.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249110.22 ms. Allocated memory was 2.5 GB in the beginning and 3.1 GB in the end (delta: 592.4 MB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -971.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 158). Cancelled while BasicCegarLoop was constructing difference of abstraction (22554states) and FLOYD_HOARE automaton (currently 16 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (9009 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 249.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 226.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2986 SDtfs, 11124 SDslu, 1792 SDs, 0 SdLazy, 21385 SolverSat, 5912 SolverUnsat, 70 SolverUnknown, 0 SolverNotchecked, 217.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2723 GetRequests, 2643 SyntacticMatches, 20 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22554occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 507 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 2649 NumberOfCodeBlocks, 2649 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3961 ConstructedInterpolants, 266 QuantifiedInterpolants, 5317970 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2421 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 1988/2353 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-35-35-064.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-35-35-064.csv Completed graceful shutdown