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/Problem03_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:01:41,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:01:41,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:01:41,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:01:41,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:01:41,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:01:41,894 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:01:41,896 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:01:41,898 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:01:41,899 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:01:41,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:01:41,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:01:41,901 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:01:41,902 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:01:41,903 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:01:41,904 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:01:41,905 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:01:41,907 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:01:41,909 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:01:41,910 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:01:41,912 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:01:41,913 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:01:41,916 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 11:01:41,922 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:01:41,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:01:41,924 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:01:41,925 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:01:41,925 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 11:01:41,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:01:41,941 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:01:41,942 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:01:41,943 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:01:41,943 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:01:41,943 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:01:41,943 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:01:41,943 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:01:41,944 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:01:41,944 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:01:41,944 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:01:41,945 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:01:41,945 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:01:41,945 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:01:41,945 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:01:41,946 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:01:41,946 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:01:41,946 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:01:41,946 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:01:41,946 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:01:41,947 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:01:41,947 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:01:41,947 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:01:41,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:01:41,947 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:01:41,948 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:01:41,948 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:01:41,948 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:01:41,948 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:01:41,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:01:41,949 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:01:41,949 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:01:41,949 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:01:41,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:01:42,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:01:42,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:01:42,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:01:42,014 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:01:42,015 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c [2018-07-24 11:01:42,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09dee03dc/f700d289ae294fb9924d28be23f7f474/FLAGa8fe123df [2018-07-24 11:01:42,771 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:01:42,773 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c [2018-07-24 11:01:42,803 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09dee03dc/f700d289ae294fb9924d28be23f7f474/FLAGa8fe123df [2018-07-24 11:01:42,828 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09dee03dc/f700d289ae294fb9924d28be23f7f474 [2018-07-24 11:01:42,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:01:42,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:01:42,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:42,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:01:42,856 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:01:42,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:42" (1/1) ... [2018-07-24 11:01:42,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c2495d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:42, skipping insertion in model container [2018-07-24 11:01:42,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:42" (1/1) ... [2018-07-24 11:01:43,096 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:01:43,629 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:43,652 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:01:44,223 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:44,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44 WrapperNode [2018-07-24 11:01:44,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:44,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:44,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:01:44,300 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:01:44,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:44,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:01:44,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:01:44,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:01:44,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:01:44,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:01:44,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:01:44,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:01:44,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (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 11:01:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:01:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:01:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:01:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:01:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:01:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:01:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:01:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:01:51,052 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:01:51,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:51 BoogieIcfgContainer [2018-07-24 11:01:51,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:01:51,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:01:51,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:01:51,058 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:01:51,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:01:42" (1/3) ... [2018-07-24 11:01:51,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6effc989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:51, skipping insertion in model container [2018-07-24 11:01:51,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44" (2/3) ... [2018-07-24 11:01:51,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6effc989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:51, skipping insertion in model container [2018-07-24 11:01:51,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:51" (3/3) ... [2018-07-24 11:01:51,062 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label28_false-unreach-call.c [2018-07-24 11:01:51,073 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:01:51,083 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:01:51,142 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:01:51,143 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:01:51,143 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:01:51,143 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:01:51,144 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:01:51,144 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:01:51,144 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:01:51,144 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:01:51,144 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:01:51,175 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 11:01:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-24 11:01:51,194 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:51,195 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:51,195 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1474166836, now seen corresponding path program 1 times [2018-07-24 11:01:51,205 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:51,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:51,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:51,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:51,255 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:52,197 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:01:52,354 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 11:01:52,356 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:52,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:01:52,357 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:52,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:52,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:52,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:52,386 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-07-24 11:01:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:54,887 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-07-24 11:01:54,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:54,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2018-07-24 11:01:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:54,917 INFO L225 Difference]: With dead ends: 838 [2018-07-24 11:01:54,917 INFO L226 Difference]: Without dead ends: 524 [2018-07-24 11:01:54,925 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-07-24 11:01:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-07-24 11:01:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-07-24 11:01:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-07-24 11:01:55,019 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 159 [2018-07-24 11:01:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:55,020 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-07-24 11:01:55,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-07-24 11:01:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-24 11:01:55,027 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:55,028 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:55,028 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1605026029, now seen corresponding path program 1 times [2018-07-24 11:01:55,029 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:55,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:55,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:55,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:55,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:55,376 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 11:01:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:55,560 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:55,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:01:55,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:55,562 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:01:55,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:01:55,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:01:55,563 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-07-24 11:02:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:00,112 INFO L93 Difference]: Finished difference Result 1615 states and 2867 transitions. [2018-07-24 11:02:00,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:02:00,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-07-24 11:02:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:00,136 INFO L225 Difference]: With dead ends: 1615 [2018-07-24 11:02:00,136 INFO L226 Difference]: Without dead ends: 1099 [2018-07-24 11:02:00,141 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:02:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2018-07-24 11:02:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1040. [2018-07-24 11:02:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2018-07-24 11:02:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1692 transitions. [2018-07-24 11:02:00,215 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1692 transitions. Word has length 169 [2018-07-24 11:02:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:00,215 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1692 transitions. [2018-07-24 11:02:00,215 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1692 transitions. [2018-07-24 11:02:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-24 11:02:00,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:00,220 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 11:02:00,221 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:00,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1873453336, now seen corresponding path program 1 times [2018-07-24 11:02:00,221 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:00,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:00,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:00,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:00,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:00,495 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:00,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:02:00,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:00,498 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:00,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:00,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:00,500 INFO L87 Difference]: Start difference. First operand 1040 states and 1692 transitions. Second operand 3 states. [2018-07-24 11:02:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:03,461 INFO L93 Difference]: Finished difference Result 2997 states and 5012 transitions. [2018-07-24 11:02:03,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:03,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2018-07-24 11:02:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:03,491 INFO L225 Difference]: With dead ends: 2997 [2018-07-24 11:02:03,491 INFO L226 Difference]: Without dead ends: 1963 [2018-07-24 11:02:03,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2018-07-24 11:02:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1958. [2018-07-24 11:02:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2018-07-24 11:02:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 3066 transitions. [2018-07-24 11:02:03,575 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 3066 transitions. Word has length 172 [2018-07-24 11:02:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:03,576 INFO L471 AbstractCegarLoop]: Abstraction has 1958 states and 3066 transitions. [2018-07-24 11:02:03,576 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 3066 transitions. [2018-07-24 11:02:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-24 11:02:03,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:03,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:03,589 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1118488409, now seen corresponding path program 1 times [2018-07-24 11:02:03,589 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:03,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:03,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:03,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:03,591 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:03,987 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:03,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:02:03,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:03,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:03,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:03,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:03,989 INFO L87 Difference]: Start difference. First operand 1958 states and 3066 transitions. Second operand 3 states. [2018-07-24 11:02:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:05,937 INFO L93 Difference]: Finished difference Result 5748 states and 9289 transitions. [2018-07-24 11:02:05,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:05,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-07-24 11:02:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:05,972 INFO L225 Difference]: With dead ends: 5748 [2018-07-24 11:02:05,973 INFO L226 Difference]: Without dead ends: 3796 [2018-07-24 11:02:05,983 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2018-07-24 11:02:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3736. [2018-07-24 11:02:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3736 states. [2018-07-24 11:02:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5841 transitions. [2018-07-24 11:02:06,100 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5841 transitions. Word has length 192 [2018-07-24 11:02:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:06,101 INFO L471 AbstractCegarLoop]: Abstraction has 3736 states and 5841 transitions. [2018-07-24 11:02:06,101 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5841 transitions. [2018-07-24 11:02:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-24 11:02:06,116 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:06,117 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, 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] [2018-07-24 11:02:06,117 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash 386599202, now seen corresponding path program 1 times [2018-07-24 11:02:06,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:06,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:06,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:06,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:06,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:06,522 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:06,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 11:02:06,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:06,523 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 11:02:06,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 11:02:06,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:06,524 INFO L87 Difference]: Start difference. First operand 3736 states and 5841 transitions. Second operand 7 states. [2018-07-24 11:02:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:09,871 INFO L93 Difference]: Finished difference Result 11556 states and 20897 transitions. [2018-07-24 11:02:09,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:02:09,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2018-07-24 11:02:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:09,948 INFO L225 Difference]: With dead ends: 11556 [2018-07-24 11:02:09,949 INFO L226 Difference]: Without dead ends: 7826 [2018-07-24 11:02:09,973 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:02:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2018-07-24 11:02:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7491. [2018-07-24 11:02:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7491 states. [2018-07-24 11:02:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7491 states to 7491 states and 12042 transitions. [2018-07-24 11:02:10,292 INFO L78 Accepts]: Start accepts. Automaton has 7491 states and 12042 transitions. Word has length 218 [2018-07-24 11:02:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:10,292 INFO L471 AbstractCegarLoop]: Abstraction has 7491 states and 12042 transitions. [2018-07-24 11:02:10,292 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 11:02:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7491 states and 12042 transitions. [2018-07-24 11:02:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-24 11:02:10,324 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:10,325 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:10,325 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:10,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1782286782, now seen corresponding path program 1 times [2018-07-24 11:02:10,325 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:10,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:10,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:10,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:10,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:10,919 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:10,920 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 11:02:10,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:10,929 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:11,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-07-24 11:02:11,579 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 66 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:11,975 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:11,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:02:11,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:11,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:02:11,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:02:11,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:02:11,977 INFO L87 Difference]: Start difference. First operand 7491 states and 12042 transitions. Second operand 5 states. [2018-07-24 11:02:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:16,221 INFO L93 Difference]: Finished difference Result 22344 states and 38555 transitions. [2018-07-24 11:02:16,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:02:16,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-07-24 11:02:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:16,327 INFO L225 Difference]: With dead ends: 22344 [2018-07-24 11:02:16,328 INFO L226 Difference]: Without dead ends: 14859 [2018-07-24 11:02:16,392 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:02:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14859 states. [2018-07-24 11:02:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14859 to 14519. [2018-07-24 11:02:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14519 states. [2018-07-24 11:02:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14519 states to 14519 states and 23143 transitions. [2018-07-24 11:02:16,935 INFO L78 Accepts]: Start accepts. Automaton has 14519 states and 23143 transitions. Word has length 231 [2018-07-24 11:02:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:16,935 INFO L471 AbstractCegarLoop]: Abstraction has 14519 states and 23143 transitions. [2018-07-24 11:02:16,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:02:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 14519 states and 23143 transitions. [2018-07-24 11:02:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-24 11:02:16,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:16,994 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, 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, 1] [2018-07-24 11:02:16,994 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:16,995 INFO L82 PathProgramCache]: Analyzing trace with hash -972726496, now seen corresponding path program 1 times [2018-07-24 11:02:16,995 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:16,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:17,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:17,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:17,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:17,680 WARN L169 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 11:02:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:17,895 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:17,895 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 11:02:17,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:17,912 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:18,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-24 11:02:18,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:19,149 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:19,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:02:19,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:19,151 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:02:19,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:02:19,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:02:19,151 INFO L87 Difference]: Start difference. First operand 14519 states and 23143 transitions. Second operand 5 states. [2018-07-24 11:02:19,467 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 11:02:23,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:23,628 INFO L93 Difference]: Finished difference Result 36498 states and 60410 transitions. [2018-07-24 11:02:23,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:02:23,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-07-24 11:02:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:23,748 INFO L225 Difference]: With dead ends: 36498 [2018-07-24 11:02:23,749 INFO L226 Difference]: Without dead ends: 21985 [2018-07-24 11:02:23,787 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:02:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21985 states. [2018-07-24 11:02:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21985 to 21765. [2018-07-24 11:02:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21765 states. [2018-07-24 11:02:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21765 states to 21765 states and 35211 transitions. [2018-07-24 11:02:24,534 INFO L78 Accepts]: Start accepts. Automaton has 21765 states and 35211 transitions. Word has length 231 [2018-07-24 11:02:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:24,534 INFO L471 AbstractCegarLoop]: Abstraction has 21765 states and 35211 transitions. [2018-07-24 11:02:24,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:02:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 21765 states and 35211 transitions. [2018-07-24 11:02:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-24 11:02:24,625 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:24,626 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:24,626 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1624223130, now seen corresponding path program 1 times [2018-07-24 11:02:24,627 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:24,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:24,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:24,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:24,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:25,173 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:25,173 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 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 [2018-07-24 11:02:25,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:25,185 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:25,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:25,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:26,540 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:26,540 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 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 [2018-07-24 11:02:26,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:26,557 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:27,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:27,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:27,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:27,791 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 11:02:27,791 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:27,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:02:27,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:02:27,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:02:27,794 INFO L87 Difference]: Start difference. First operand 21765 states and 35211 transitions. Second operand 9 states. [2018-07-24 11:02:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:30,850 INFO L93 Difference]: Finished difference Result 61982 states and 105161 transitions. [2018-07-24 11:02:30,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:02:30,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2018-07-24 11:02:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:31,046 INFO L225 Difference]: With dead ends: 61982 [2018-07-24 11:02:31,046 INFO L226 Difference]: Without dead ends: 40223 [2018-07-24 11:02:31,114 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 921 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:02:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40223 states. [2018-07-24 11:02:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40223 to 39551. [2018-07-24 11:02:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39551 states. [2018-07-24 11:02:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39551 states to 39551 states and 61866 transitions. [2018-07-24 11:02:32,384 INFO L78 Accepts]: Start accepts. Automaton has 39551 states and 61866 transitions. Word has length 233 [2018-07-24 11:02:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:32,384 INFO L471 AbstractCegarLoop]: Abstraction has 39551 states and 61866 transitions. [2018-07-24 11:02:32,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:02:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 39551 states and 61866 transitions. [2018-07-24 11:02:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-24 11:02:32,456 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:32,457 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:32,457 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:32,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1257672817, now seen corresponding path program 1 times [2018-07-24 11:02:32,457 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:32,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:32,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:32,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:32,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:33,049 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 11:02:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:33,418 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:33,418 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 11:02:33,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:33,425 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:33,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:33,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:33,961 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:33,961 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 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 [2018-07-24 11:02:33,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:33,980 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:34,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:34,655 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:34,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:34,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 6, 4] total 11 [2018-07-24 11:02:34,773 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:34,774 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 11:02:34,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 11:02:34,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:02:34,775 INFO L87 Difference]: Start difference. First operand 39551 states and 61866 transitions. Second operand 8 states. [2018-07-24 11:02:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:44,681 INFO L93 Difference]: Finished difference Result 123501 states and 267307 transitions. [2018-07-24 11:02:44,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-24 11:02:44,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2018-07-24 11:02:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:45,614 INFO L225 Difference]: With dead ends: 123501 [2018-07-24 11:02:45,615 INFO L226 Difference]: Without dead ends: 83956 [2018-07-24 11:02:45,903 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 11:02:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83956 states. [2018-07-24 11:02:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83956 to 78590. [2018-07-24 11:02:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78590 states. [2018-07-24 11:02:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78590 states to 78590 states and 114582 transitions. [2018-07-24 11:02:49,768 INFO L78 Accepts]: Start accepts. Automaton has 78590 states and 114582 transitions. Word has length 240 [2018-07-24 11:02:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:49,768 INFO L471 AbstractCegarLoop]: Abstraction has 78590 states and 114582 transitions. [2018-07-24 11:02:49,769 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 11:02:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 78590 states and 114582 transitions. [2018-07-24 11:02:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-24 11:02:49,902 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:49,902 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:49,903 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:49,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1675081162, now seen corresponding path program 1 times [2018-07-24 11:02:49,903 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:49,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:49,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:49,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:49,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 106 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-24 11:02:50,280 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:50,280 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:50,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:50,296 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:50,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 11:02:51,772 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 106 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-24 11:02:52,220 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:52,220 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:52,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:52,255 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:52,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 11:02:52,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 106 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-24 11:02:53,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:53,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-07-24 11:02:53,077 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:53,078 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 11:02:53,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 11:02:53,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:02:53,078 INFO L87 Difference]: Start difference. First operand 78590 states and 114582 transitions. Second operand 8 states. [2018-07-24 11:02:59,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:59,941 INFO L93 Difference]: Finished difference Result 181151 states and 302106 transitions. [2018-07-24 11:02:59,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 11:02:59,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2018-07-24 11:02:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:00,431 INFO L225 Difference]: With dead ends: 181151 [2018-07-24 11:03:00,432 INFO L226 Difference]: Without dead ends: 102977 [2018-07-24 11:03:00,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1043 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:03:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102977 states. [2018-07-24 11:03:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102977 to 100222. [2018-07-24 11:03:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100222 states. [2018-07-24 11:03:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100222 states to 100222 states and 154225 transitions. [2018-07-24 11:03:03,848 INFO L78 Accepts]: Start accepts. Automaton has 100222 states and 154225 transitions. Word has length 262 [2018-07-24 11:03:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:03,848 INFO L471 AbstractCegarLoop]: Abstraction has 100222 states and 154225 transitions. [2018-07-24 11:03:03,848 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 11:03:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 100222 states and 154225 transitions. [2018-07-24 11:03:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-24 11:03:04,088 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:04,088 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:04,088 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:04,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2047593470, now seen corresponding path program 1 times [2018-07-24 11:03:04,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:04,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:04,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:04,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:04,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 95 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 11:03:05,331 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:05,331 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:05,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:05,339 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:05,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-07-24 11:03:05,713 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 95 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 11:03:05,918 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:05,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:03:05,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:05,919 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:03:05,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:03:05,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:03:05,920 INFO L87 Difference]: Start difference. First operand 100222 states and 154225 transitions. Second operand 5 states. [2018-07-24 11:03:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:10,397 INFO L93 Difference]: Finished difference Result 194609 states and 311711 transitions. [2018-07-24 11:03:10,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:03:10,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2018-07-24 11:03:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:10,831 INFO L225 Difference]: With dead ends: 194609 [2018-07-24 11:03:10,831 INFO L226 Difference]: Without dead ends: 95213 [2018-07-24 11:03:11,145 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 530 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:03:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95213 states. [2018-07-24 11:03:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95213 to 91917. [2018-07-24 11:03:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91917 states. [2018-07-24 11:03:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91917 states to 91917 states and 129161 transitions. [2018-07-24 11:03:14,938 INFO L78 Accepts]: Start accepts. Automaton has 91917 states and 129161 transitions. Word has length 268 [2018-07-24 11:03:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:14,938 INFO L471 AbstractCegarLoop]: Abstraction has 91917 states and 129161 transitions. [2018-07-24 11:03:14,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:03:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 91917 states and 129161 transitions. [2018-07-24 11:03:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-24 11:03:15,068 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:15,069 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:03:15,069 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:15,069 INFO L82 PathProgramCache]: Analyzing trace with hash -194203547, now seen corresponding path program 1 times [2018-07-24 11:03:15,070 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:15,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:15,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:15,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:15,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:15,349 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:03:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 116 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:03:15,772 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:15,772 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 11:03:15,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:15,792 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:16,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-07-24 11:03:16,184 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 116 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:03:17,085 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:17,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:03:17,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:17,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:03:17,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:03:17,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:03:17,086 INFO L87 Difference]: Start difference. First operand 91917 states and 129161 transitions. Second operand 5 states. [2018-07-24 11:03:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:20,235 INFO L93 Difference]: Finished difference Result 180808 states and 245883 transitions. [2018-07-24 11:03:20,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:03:20,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2018-07-24 11:03:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:20,468 INFO L225 Difference]: With dead ends: 180808 [2018-07-24 11:03:20,468 INFO L226 Difference]: Without dead ends: 90943 [2018-07-24 11:03:20,639 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 556 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:03:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90943 states. [2018-07-24 11:03:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90943 to 89398. [2018-07-24 11:03:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89398 states. [2018-07-24 11:03:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89398 states to 89398 states and 109017 transitions. [2018-07-24 11:03:23,332 INFO L78 Accepts]: Start accepts. Automaton has 89398 states and 109017 transitions. Word has length 281 [2018-07-24 11:03:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:23,332 INFO L471 AbstractCegarLoop]: Abstraction has 89398 states and 109017 transitions. [2018-07-24 11:03:23,332 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:03:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 89398 states and 109017 transitions. [2018-07-24 11:03:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 11:03:23,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:23,404 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:23,404 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1905334830, now seen corresponding path program 1 times [2018-07-24 11:03:23,405 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:23,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:23,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:23,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:23,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 11:03:23,616 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:23,616 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:23,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:23,625 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:23,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-24 11:03:24,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:24,870 WARN L169 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 11:03:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 148 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 11:03:25,121 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:25,122 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:03:25,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:25,137 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:25,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-24 11:03:26,048 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 148 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 11:03:26,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:03:26,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 11:03:26,216 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:03:26,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:03:26,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:03:26,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:03:26,218 INFO L87 Difference]: Start difference. First operand 89398 states and 109017 transitions. Second operand 9 states. [2018-07-24 11:03:33,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:33,594 INFO L93 Difference]: Finished difference Result 318839 states and 404541 transitions. [2018-07-24 11:03:33,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:03:33,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2018-07-24 11:03:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:34,467 INFO L225 Difference]: With dead ends: 318839 [2018-07-24 11:03:34,467 INFO L226 Difference]: Without dead ends: 231557 [2018-07-24 11:03:34,677 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1141 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-07-24 11:03:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231557 states. [2018-07-24 11:03:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231557 to 229474. [2018-07-24 11:03:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229474 states. [2018-07-24 11:03:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229474 states to 229474 states and 279294 transitions. [2018-07-24 11:03:43,621 INFO L78 Accepts]: Start accepts. Automaton has 229474 states and 279294 transitions. Word has length 287 [2018-07-24 11:03:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:43,621 INFO L471 AbstractCegarLoop]: Abstraction has 229474 states and 279294 transitions. [2018-07-24 11:03:43,621 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:03:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 229474 states and 279294 transitions. [2018-07-24 11:03:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-24 11:03:43,736 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:43,736 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:43,736 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:43,736 INFO L82 PathProgramCache]: Analyzing trace with hash -366528200, now seen corresponding path program 1 times [2018-07-24 11:03:43,736 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:43,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:43,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:43,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:43,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 159 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-07-24 11:03:44,286 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:44,286 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:44,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:44,294 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:44,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-07-24 11:03:44,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 159 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-07-24 11:03:44,947 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:44,947 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:03:44,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:44,976 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:45,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 136 proven. 34 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-07-24 11:03:45,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 159 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-07-24 11:03:45,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:03:45,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 5] total 9 [2018-07-24 11:03:45,844 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:03:45,844 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:03:45,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:03:45,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:03:45,846 INFO L87 Difference]: Start difference. First operand 229474 states and 279294 transitions. Second operand 6 states. [2018-07-24 11:03:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:53,672 INFO L93 Difference]: Finished difference Result 408866 states and 523147 transitions. [2018-07-24 11:03:53,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:03:53,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2018-07-24 11:03:53,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:55,299 INFO L225 Difference]: With dead ends: 408866 [2018-07-24 11:03:55,299 INFO L226 Difference]: Without dead ends: 180657 [2018-07-24 11:03:55,578 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1154 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:03:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180657 states. [2018-07-24 11:04:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180657 to 171837. [2018-07-24 11:04:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171837 states. [2018-07-24 11:04:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171837 states to 171837 states and 204048 transitions. [2018-07-24 11:04:00,702 INFO L78 Accepts]: Start accepts. Automaton has 171837 states and 204048 transitions. Word has length 289 [2018-07-24 11:04:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:04:00,703 INFO L471 AbstractCegarLoop]: Abstraction has 171837 states and 204048 transitions. [2018-07-24 11:04:00,703 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:04:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 171837 states and 204048 transitions. [2018-07-24 11:04:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-24 11:04:00,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:04:00,813 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:00,813 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:04:00,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1360859303, now seen corresponding path program 1 times [2018-07-24 11:04:00,813 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:04:00,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:00,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:00,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:00,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:04:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 160 proven. 14 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 11:04:01,183 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:01,184 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:04:01,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:01,196 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:01,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-07-24 11:04:01,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 143 proven. 64 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 11:04:01,981 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:04:01,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 11 [2018-07-24 11:04:01,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:04:01,982 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:04:01,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:04:01,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:04:01,983 INFO L87 Difference]: Start difference. First operand 171837 states and 204048 transitions. Second operand 6 states. [2018-07-24 11:04:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:04:07,686 INFO L93 Difference]: Finished difference Result 342541 states and 411742 transitions. [2018-07-24 11:04:07,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:04:07,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 318 [2018-07-24 11:04:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:04:08,304 INFO L225 Difference]: With dead ends: 342541 [2018-07-24 11:04:08,305 INFO L226 Difference]: Without dead ends: 174854 [2018-07-24 11:04:08,601 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 628 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:04:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174854 states. [2018-07-24 11:04:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174854 to 172051. [2018-07-24 11:04:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172051 states. [2018-07-24 11:04:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172051 states to 172051 states and 203883 transitions. [2018-07-24 11:04:14,656 INFO L78 Accepts]: Start accepts. Automaton has 172051 states and 203883 transitions. Word has length 318 [2018-07-24 11:04:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:04:14,656 INFO L471 AbstractCegarLoop]: Abstraction has 172051 states and 203883 transitions. [2018-07-24 11:04:14,656 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:04:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 172051 states and 203883 transitions. [2018-07-24 11:04:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-24 11:04:14,761 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:04:14,762 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:04:14,762 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:04:14,762 INFO L82 PathProgramCache]: Analyzing trace with hash 735582596, now seen corresponding path program 1 times [2018-07-24 11:04:14,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:04:14,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:14,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:14,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:14,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:04:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 153 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:04:15,148 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:15,148 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:04:15,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:15,156 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:15,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:04:15,550 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:04:15,697 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:15,697 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:04:15,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:15,713 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:16,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:04:16,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:04:17,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:04:17,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-07-24 11:04:17,127 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:04:17,128 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 11:04:17,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 11:04:17,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:04:17,129 INFO L87 Difference]: Start difference. First operand 172051 states and 203883 transitions. Second operand 13 states. [2018-07-24 11:04:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:04:33,903 INFO L93 Difference]: Finished difference Result 512666 states and 669780 transitions. [2018-07-24 11:04:33,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-24 11:04:33,903 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 317 [2018-07-24 11:04:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:04:36,308 INFO L225 Difference]: With dead ends: 512666 [2018-07-24 11:04:36,309 INFO L226 Difference]: Without dead ends: 343350 [2018-07-24 11:04:36,656 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1312 GetRequests, 1270 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2018-07-24 11:04:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343350 states. [2018-07-24 11:04:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343350 to 327003. [2018-07-24 11:04:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327003 states. [2018-07-24 11:04:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327003 states to 327003 states and 404187 transitions. [2018-07-24 11:04:48,431 INFO L78 Accepts]: Start accepts. Automaton has 327003 states and 404187 transitions. Word has length 317 [2018-07-24 11:04:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:04:48,432 INFO L471 AbstractCegarLoop]: Abstraction has 327003 states and 404187 transitions. [2018-07-24 11:04:48,432 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 11:04:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 327003 states and 404187 transitions. [2018-07-24 11:04:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-24 11:04:48,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:04:48,645 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2018-07-24 11:04:48,646 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:04:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash -702779139, now seen corresponding path program 1 times [2018-07-24 11:04:48,646 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:04:48,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:48,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:48,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:48,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:04:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 201 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-07-24 11:04:49,067 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:49,067 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:04:49,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:49,075 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:49,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 11:04:49,496 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 201 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-07-24 11:04:49,796 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:49,796 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:04:49,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:49,813 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:50,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 11:04:50,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 172 proven. 156 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 11:04:51,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:04:51,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 8, 8] total 13 [2018-07-24 11:04:51,036 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:04:51,037 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 11:04:51,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 11:04:51,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:04:51,037 INFO L87 Difference]: Start difference. First operand 327003 states and 404187 transitions. Second operand 7 states. [2018-07-24 11:05:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:05:15,301 INFO L93 Difference]: Finished difference Result 793237 states and 1048599 transitions. [2018-07-24 11:05:15,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:05:15,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2018-07-24 11:05:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:05:17,570 INFO L225 Difference]: With dead ends: 793237 [2018-07-24 11:05:17,570 INFO L226 Difference]: Without dead ends: 472473 [2018-07-24 11:05:17,997 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1301 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:05:18,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472473 states. Received shutdown request... [2018-07-24 11:05:18,739 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:05:18,744 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:05:18,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:05:18 BoogieIcfgContainer [2018-07-24 11:05:18,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:05:18,747 INFO L168 Benchmark]: Toolchain (without parser) took 215904.25 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -212.8 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-07-24 11:05:18,748 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:05:18,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1453.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:18,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:18,750 INFO L168 Benchmark]: Boogie Preprocessor took 371.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -927.1 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:18,751 INFO L168 Benchmark]: RCFGBuilder took 6201.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 286.2 MB). Peak memory consumption was 286.2 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:18,751 INFO L168 Benchmark]: TraceAbstraction took 207691.78 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 322.3 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-07-24 11:05:18,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1453.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 371.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -927.1 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6201.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 286.2 MB). Peak memory consumption was 286.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207691.78 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 322.3 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1491]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1491). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 207.6s OverallTime, 17 OverallIterations, 6 TraceHistogramMax, 126.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3345 SDtfs, 22656 SDslu, 4014 SDs, 0 SdLazy, 33581 SolverSat, 6767 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10720 GetRequests, 10455 SyntacticMatches, 41 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327003occurred in iteration=16, 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: 49.4s AutomataMinimizationTime, 17 MinimizatonAttempts, 44708 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 9436 NumberOfCodeBlocks, 9436 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 14622 ConstructedInterpolants, 0 QuantifiedInterpolants, 8757000 SizeOfPredicates, 71 NumberOfNonLiveVariables, 23814 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 55 InterpolantComputations, 10 PerfectInterpolantSequences, 8315/9339 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/Problem03_label28_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-05-18-771.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label28_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-05-18-771.csv Completed graceful shutdown