java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:47:31,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:47:31,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:47:31,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:47:31,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:47:31,912 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:47:31,913 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:47:31,915 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:47:31,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:47:31,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:47:31,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:47:31,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:47:31,920 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:47:31,921 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:47:31,922 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:47:31,923 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:47:31,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:47:31,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:47:31,927 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:47:31,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:47:31,930 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:47:31,931 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:47:31,933 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:47:31,934 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:47:31,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:47:31,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:47:31,936 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:47:31,937 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:47:31,937 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:47:31,938 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:47:31,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:47:31,939 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:47:31,940 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:47:31,940 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:47:31,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:47:31,942 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:47:31,942 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 [2018-07-24 14:47:31,957 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:47:31,958 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:47:31,958 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:47:31,959 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:47:31,959 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:47:31,959 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:47:31,959 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:47:31,960 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:47:31,960 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:47:31,960 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:47:31,960 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:47:31,961 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:47:31,961 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:47:31,961 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:47:31,961 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:47:31,962 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:47:31,962 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:47:31,962 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:47:31,964 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:47:31,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:47:31,964 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:47:31,965 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:47:31,965 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:47:31,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:47:31,965 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:47:31,965 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:47:31,966 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:47:31,966 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:47:31,966 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:47:31,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:47:31,967 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:47:31,967 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:47:31,967 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:47:32,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:47:32,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:47:32,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:47:32,052 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:47:32,052 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:47:32,053 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-07-24 14:47:32,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3352862bb/73d51f83f2a940fb9b86e1feeaadb54c/FLAG5041b9394 [2018-07-24 14:47:32,932 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:47:32,932 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-07-24 14:47:32,963 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3352862bb/73d51f83f2a940fb9b86e1feeaadb54c/FLAG5041b9394 [2018-07-24 14:47:32,987 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3352862bb/73d51f83f2a940fb9b86e1feeaadb54c [2018-07-24 14:47:32,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:47:33,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:47:33,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:47:33,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:47:33,015 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:47:33,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:47:32" (1/1) ... [2018-07-24 14:47:33,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33404c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:33, skipping insertion in model container [2018-07-24 14:47:33,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:47:32" (1/1) ... [2018-07-24 14:47:33,379 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:47:34,288 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:47:34,305 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:47:34,838 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:47:35,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35 WrapperNode [2018-07-24 14:47:35,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:47:35,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:47:35,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:47:35,072 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:47:35,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:35,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:35,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:47:35,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:47:35,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:47:35,377 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:47:35,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:35,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:36,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:36,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:36,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:36,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:36,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... [2018-07-24 14:47:36,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:47:36,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:47:36,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:47:36,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:47:36,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:47:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:47:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:47:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:47:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:47:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:47:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:47:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:47:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:47:36,449 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 [2018-07-24 14:47:36,449 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 [2018-07-24 14:47:46,639 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:47:46,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:47:46 BoogieIcfgContainer [2018-07-24 14:47:46,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:47:46,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:47:46,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:47:46,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:47:46,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:47:32" (1/3) ... [2018-07-24 14:47:46,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb211a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:47:46, skipping insertion in model container [2018-07-24 14:47:46,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:47:35" (2/3) ... [2018-07-24 14:47:46,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb211a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:47:46, skipping insertion in model container [2018-07-24 14:47:46,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:47:46" (3/3) ... [2018-07-24 14:47:46,649 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00_true-unreach-call.c [2018-07-24 14:47:46,658 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:47:46,672 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:47:46,733 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:47:46,734 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:47:46,734 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:47:46,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:47:46,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:47:46,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:47:46,734 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:47:46,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:47:46,735 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:47:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 14:47:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-24 14:47:46,781 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:47:46,782 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:47:46,783 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:47:46,788 INFO L82 PathProgramCache]: Analyzing trace with hash 273584809, now seen corresponding path program 1 times [2018-07-24 14:47:46,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:47:46,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:47:46,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:47:46,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:47:46,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:47:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:47:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:47:47,400 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:47:47,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:47:47,400 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:47:47,406 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:47:47,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:47:47,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:47:47,425 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 14:48:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:48:01,899 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-07-24 14:48:01,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:48:01,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-07-24 14:48:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:48:01,933 INFO L225 Difference]: With dead ends: 2142 [2018-07-24 14:48:01,933 INFO L226 Difference]: Without dead ends: 1532 [2018-07-24 14:48:01,944 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:48:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-07-24 14:48:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-07-24 14:48:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-07-24 14:48:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-07-24 14:48:02,084 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 61 [2018-07-24 14:48:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:48:02,085 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-07-24 14:48:02,085 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:48:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-07-24 14:48:02,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-24 14:48:02,099 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:48:02,099 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:48:02,100 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:48:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash -354031590, now seen corresponding path program 1 times [2018-07-24 14:48:02,100 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:48:02,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:48:02,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:48:02,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:48:02,103 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:48:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:48:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:48:02,346 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:48:02,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:48:02,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:48:02,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:48:02,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:48:02,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:48:02,349 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-07-24 14:48:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:48:11,733 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-07-24 14:48:11,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:48:11,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-07-24 14:48:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:48:11,760 INFO L225 Difference]: With dead ends: 4424 [2018-07-24 14:48:11,760 INFO L226 Difference]: Without dead ends: 2911 [2018-07-24 14:48:11,766 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:48:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-07-24 14:48:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-07-24 14:48:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-07-24 14:48:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-07-24 14:48:11,875 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 133 [2018-07-24 14:48:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:48:11,878 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-07-24 14:48:11,878 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:48:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-07-24 14:48:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-24 14:48:11,892 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:48:11,892 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:48:11,893 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:48:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1289406791, now seen corresponding path program 1 times [2018-07-24 14:48:11,893 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:48:11,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:48:11,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:48:11,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:48:11,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:48:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:48:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:48:12,360 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:48:12,360 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:48:12,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:48:12,371 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:48:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:48:12,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:48:34,670 WARN L169 SmtUtils]: Spent 21.80 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-07-24 14:48:54,932 WARN L169 SmtUtils]: Spent 16.12 s on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2018-07-24 14:48:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:48:55,560 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:48:58,138 WARN L169 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 460 DAG size of output: 19 [2018-07-24 14:48:58,208 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-07-24 14:48:59,036 WARN L169 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 29 [2018-07-24 14:48:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:48:59,444 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:48:59,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 14:48:59,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:48:59,449 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:48:59,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:48:59,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=104, Unknown=2, NotChecked=0, Total=156 [2018-07-24 14:48:59,450 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 6 states. [2018-07-24 14:49:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:49:17,591 INFO L93 Difference]: Finished difference Result 11147 states and 17674 transitions. [2018-07-24 14:49:17,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:49:17,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-07-24 14:49:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:49:17,658 INFO L225 Difference]: With dead ends: 11147 [2018-07-24 14:49:17,658 INFO L226 Difference]: Without dead ends: 8278 [2018-07-24 14:49:17,681 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=50, Invalid=104, Unknown=2, NotChecked=0, Total=156 [2018-07-24 14:49:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2018-07-24 14:49:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 8237. [2018-07-24 14:49:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8237 states. [2018-07-24 14:49:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8237 states to 8237 states and 12331 transitions. [2018-07-24 14:49:17,938 INFO L78 Accepts]: Start accepts. Automaton has 8237 states and 12331 transitions. Word has length 136 [2018-07-24 14:49:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:49:17,938 INFO L471 AbstractCegarLoop]: Abstraction has 8237 states and 12331 transitions. [2018-07-24 14:49:17,939 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:49:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8237 states and 12331 transitions. [2018-07-24 14:49:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-24 14:49:17,948 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:49:17,948 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:49:17,948 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:49:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash 551130879, now seen corresponding path program 1 times [2018-07-24 14:49:17,949 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:49:17,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:17,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:17,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:17,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:49:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:49:18,609 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:49:18,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:49:18,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:49:18,611 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:49:18,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:49:18,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:49:18,612 INFO L87 Difference]: Start difference. First operand 8237 states and 12331 transitions. Second operand 6 states. [2018-07-24 14:49:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:49:36,382 INFO L93 Difference]: Finished difference Result 28259 states and 48579 transitions. [2018-07-24 14:49:36,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:49:36,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2018-07-24 14:49:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:49:36,578 INFO L225 Difference]: With dead ends: 28259 [2018-07-24 14:49:36,578 INFO L226 Difference]: Without dead ends: 20028 [2018-07-24 14:49:36,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:49:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20028 states. [2018-07-24 14:49:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20028 to 19744. [2018-07-24 14:49:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19744 states. [2018-07-24 14:49:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19744 states to 19744 states and 29995 transitions. [2018-07-24 14:49:37,613 INFO L78 Accepts]: Start accepts. Automaton has 19744 states and 29995 transitions. Word has length 205 [2018-07-24 14:49:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:49:37,614 INFO L471 AbstractCegarLoop]: Abstraction has 19744 states and 29995 transitions. [2018-07-24 14:49:37,614 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:49:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 19744 states and 29995 transitions. [2018-07-24 14:49:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-24 14:49:37,626 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:49:37,626 INFO L353 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, 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] [2018-07-24 14:49:37,626 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:49:37,626 INFO L82 PathProgramCache]: Analyzing trace with hash -437958559, now seen corresponding path program 1 times [2018-07-24 14:49:37,627 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:49:37,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:37,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:37,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:37,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:49:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:37,924 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:49:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:49:38,352 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:49:38,352 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:49:38,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:38,366 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:49:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:38,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:49:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:49:38,910 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:49:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:49:39,874 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:49:39,874 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:49:39,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:39,893 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:49:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:40,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:49:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 14:49:40,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:49:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 14:49:40,804 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:49:40,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 14:49:40,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:49:40,805 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:49:40,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:49:40,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:49:40,806 INFO L87 Difference]: Start difference. First operand 19744 states and 29995 transitions. Second operand 5 states. [2018-07-24 14:49:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:49:46,457 INFO L93 Difference]: Finished difference Result 44792 states and 69404 transitions. [2018-07-24 14:49:46,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:49:46,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-07-24 14:49:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:49:46,557 INFO L225 Difference]: With dead ends: 44792 [2018-07-24 14:49:46,557 INFO L226 Difference]: Without dead ends: 25054 [2018-07-24 14:49:46,607 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 816 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:49:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25054 states. [2018-07-24 14:49:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25054 to 25049. [2018-07-24 14:49:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25049 states. [2018-07-24 14:49:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25049 states to 25049 states and 32873 transitions. [2018-07-24 14:49:47,161 INFO L78 Accepts]: Start accepts. Automaton has 25049 states and 32873 transitions. Word has length 207 [2018-07-24 14:49:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:49:47,161 INFO L471 AbstractCegarLoop]: Abstraction has 25049 states and 32873 transitions. [2018-07-24 14:49:47,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:49:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 25049 states and 32873 transitions. [2018-07-24 14:49:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-24 14:49:47,171 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:49:47,171 INFO L353 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, 2, 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] [2018-07-24 14:49:47,171 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:49:47,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1353132336, now seen corresponding path program 1 times [2018-07-24 14:49:47,172 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:49:47,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:47,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:47,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:47,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:49:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:47,467 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:49:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 118 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 14:49:48,205 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:49:48,205 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:49:48,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:48,213 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:49:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:48,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:49:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 14:49:48,430 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:49:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 14:49:48,532 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:49:48,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-07-24 14:49:48,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:49:48,533 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:49:48,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:49:48,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:49:48,533 INFO L87 Difference]: Start difference. First operand 25049 states and 32873 transitions. Second operand 3 states. [2018-07-24 14:49:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:49:57,333 INFO L93 Difference]: Finished difference Result 62432 states and 82970 transitions. [2018-07-24 14:49:57,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:49:57,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-07-24 14:49:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:49:57,483 INFO L225 Difference]: With dead ends: 62432 [2018-07-24 14:49:57,483 INFO L226 Difference]: Without dead ends: 37389 [2018-07-24 14:49:57,944 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 457 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:49:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37389 states. [2018-07-24 14:49:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37389 to 37383. [2018-07-24 14:49:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37383 states. [2018-07-24 14:49:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37383 states to 37383 states and 47066 transitions. [2018-07-24 14:49:58,670 INFO L78 Accepts]: Start accepts. Automaton has 37383 states and 47066 transitions. Word has length 228 [2018-07-24 14:49:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:49:58,671 INFO L471 AbstractCegarLoop]: Abstraction has 37383 states and 47066 transitions. [2018-07-24 14:49:58,671 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:49:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 37383 states and 47066 transitions. [2018-07-24 14:49:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-24 14:49:58,683 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:49:58,684 INFO L353 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, 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] [2018-07-24 14:49:58,684 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:49:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1885527395, now seen corresponding path program 1 times [2018-07-24 14:49:58,684 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:49:58,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:58,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:58,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:49:58,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:49:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:59,013 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:49:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 103 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:49:59,863 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:49:59,863 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:49:59,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:49:59,883 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:49:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:49:59,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:50:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:50:00,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:50:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:50:00,272 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:50:00,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 14:50:00,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:50:00,273 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:50:00,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:50:00,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:50:00,273 INFO L87 Difference]: Start difference. First operand 37383 states and 47066 transitions. Second operand 3 states. [2018-07-24 14:50:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:50:04,402 INFO L93 Difference]: Finished difference Result 75622 states and 95356 transitions. [2018-07-24 14:50:04,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:50:04,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-07-24 14:50:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:50:04,550 INFO L225 Difference]: With dead ends: 75622 [2018-07-24 14:50:04,550 INFO L226 Difference]: Without dead ends: 38245 [2018-07-24 14:50:05,135 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 492 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:50:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38245 states. [2018-07-24 14:50:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38245 to 36937. [2018-07-24 14:50:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36937 states. [2018-07-24 14:50:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36937 states to 36937 states and 44874 transitions. [2018-07-24 14:50:05,733 INFO L78 Accepts]: Start accepts. Automaton has 36937 states and 44874 transitions. Word has length 246 [2018-07-24 14:50:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:50:05,733 INFO L471 AbstractCegarLoop]: Abstraction has 36937 states and 44874 transitions. [2018-07-24 14:50:05,733 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:50:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 36937 states and 44874 transitions. [2018-07-24 14:50:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 14:50:05,746 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:50:05,746 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:50:05,747 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:50:05,747 INFO L82 PathProgramCache]: Analyzing trace with hash -255670140, now seen corresponding path program 1 times [2018-07-24 14:50:05,747 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:50:05,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:50:05,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:50:05,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:50:05,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:50:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:50:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 14:50:06,261 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:50:06,261 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:50:06,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:50:06,269 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:50:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:50:06,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:50:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 14:50:06,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:50:07,905 WARN L169 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-07-24 14:50:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:50:08,469 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:50:08,469 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:50:08,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:50:08,485 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:50:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:50:08,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:50:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 14:50:08,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:50:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:50:09,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:50:09,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 15 [2018-07-24 14:50:09,951 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:50:09,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 14:50:09,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 14:50:09,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:50:09,955 INFO L87 Difference]: Start difference. First operand 36937 states and 44874 transitions. Second operand 10 states. [2018-07-24 14:50:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:50:42,043 INFO L93 Difference]: Finished difference Result 121683 states and 170901 transitions. [2018-07-24 14:50:42,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 14:50:42,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 287 [2018-07-24 14:50:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:50:42,499 INFO L225 Difference]: With dead ends: 121683 [2018-07-24 14:50:42,499 INFO L226 Difference]: Without dead ends: 85189 [2018-07-24 14:50:42,682 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1136 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2018-07-24 14:50:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85189 states. [2018-07-24 14:50:44,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85189 to 82894. [2018-07-24 14:50:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82894 states. [2018-07-24 14:50:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82894 states to 82894 states and 103741 transitions. [2018-07-24 14:50:45,091 INFO L78 Accepts]: Start accepts. Automaton has 82894 states and 103741 transitions. Word has length 287 [2018-07-24 14:50:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:50:45,091 INFO L471 AbstractCegarLoop]: Abstraction has 82894 states and 103741 transitions. [2018-07-24 14:50:45,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 14:50:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 82894 states and 103741 transitions. [2018-07-24 14:50:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-24 14:50:45,115 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:50:45,115 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:50:45,116 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:50:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 604770531, now seen corresponding path program 1 times [2018-07-24 14:50:45,116 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:50:45,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:50:45,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:50:45,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:50:45,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:50:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:50:45,598 WARN L169 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-24 14:50:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 16 proven. 321 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:50:46,043 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:50:46,043 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:50:46,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:50:46,051 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:50:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:50:46,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:50:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-07-24 14:50:46,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:50:46,493 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-07-24 14:50:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 240 proven. 98 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:50:46,921 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:50:46,922 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:50:46,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:50:46,951 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:50:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:50:47,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:50:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 14:50:47,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:50:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 170 proven. 164 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 14:50:47,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:50:47,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 5, 5] total 23 [2018-07-24 14:50:47,986 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:50:47,987 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-24 14:50:47,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-24 14:50:47,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:50:47,988 INFO L87 Difference]: Start difference. First operand 82894 states and 103741 transitions. Second operand 18 states. [2018-07-24 14:50:49,918 WARN L169 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-07-24 14:51:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:51:23,722 INFO L93 Difference]: Finished difference Result 245126 states and 308349 transitions. [2018-07-24 14:51:23,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-24 14:51:23,722 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 345 [2018-07-24 14:51:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:51:24,159 INFO L225 Difference]: With dead ends: 245126 [2018-07-24 14:51:24,159 INFO L226 Difference]: Without dead ends: 132157 [2018-07-24 14:51:24,444 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1475 GetRequests, 1393 SyntacticMatches, 9 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1140, Invalid=4410, Unknown=0, NotChecked=0, Total=5550 [2018-07-24 14:51:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132157 states. [2018-07-24 14:51:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132157 to 119703. [2018-07-24 14:51:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119703 states. [2018-07-24 14:51:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119703 states to 119703 states and 145060 transitions. [2018-07-24 14:51:26,750 INFO L78 Accepts]: Start accepts. Automaton has 119703 states and 145060 transitions. Word has length 345 [2018-07-24 14:51:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:51:26,750 INFO L471 AbstractCegarLoop]: Abstraction has 119703 states and 145060 transitions. [2018-07-24 14:51:26,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-24 14:51:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 119703 states and 145060 transitions. [2018-07-24 14:51:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-24 14:51:26,763 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:51:26,763 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:51:26,764 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:51:26,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2112990462, now seen corresponding path program 1 times [2018-07-24 14:51:26,764 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:51:26,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:51:26,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:51:26,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:51:26,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:51:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:51:27,820 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 14:51:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 174 proven. 258 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:51:28,828 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:51:28,828 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:51:28,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:51:28,836 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:51:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:51:28,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 14:51:29,007 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 14:51:29,208 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:51:29,209 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:51:29,214 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:51:29,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:51:29 BoogieIcfgContainer [2018-07-24 14:51:29,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:51:29,215 INFO L168 Benchmark]: Toolchain (without parser) took 236214.83 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 999.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:51:29,216 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-07-24 14:51:29,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2066.71 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. [2018-07-24 14:51:29,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 304.40 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:51:29,218 INFO L168 Benchmark]: Boogie Preprocessor took 997.49 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 914.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:51:29,219 INFO L168 Benchmark]: RCFGBuilder took 10266.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.4 MB). Peak memory consumption was 490.4 MB. Max. memory is 7.1 GB. [2018-07-24 14:51:29,219 INFO L168 Benchmark]: TraceAbstraction took 222572.68 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -792.1 MB). Peak memory consumption was 499.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:51:29,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2066.71 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 304.40 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 997.49 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 914.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10266.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.4 MB). Peak memory consumption was 490.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222572.68 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -792.1 MB). Peak memory consumption was 499.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 170]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 170). Cancelled while BasicCegarLoop was analyzing trace of length 359 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.4s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 149.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3662 SDtfs, 31698 SDslu, 3805 SDs, 0 SdLazy, 46898 SolverSat, 12533 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 124.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4755 GetRequests, 4570 SyntacticMatches, 35 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 55.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119703occurred in iteration=9, 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: 7.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 16442 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 59.4s InterpolantComputationTime, 4136 NumberOfCodeBlocks, 4136 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6397 ConstructedInterpolants, 321 QuantifiedInterpolants, 9775571 SizeOfPredicates, 19 NumberOfNonLiveVariables, 4058 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 4221/5310 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_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-51-29-243.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-51-29-243.csv Completed graceful shutdown