java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:33:16,424 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:33:16,426 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:33:16,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:33:16,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:33:16,445 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:33:16,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:33:16,449 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:33:16,452 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:33:16,454 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:33:16,455 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:33:16,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:33:16,458 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:33:16,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:33:16,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:33:16,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:33:16,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:33:16,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:33:16,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:33:16,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:33:16,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:33:16,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:33:16,479 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:33:16,479 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:33:16,479 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:33:16,480 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:33:16,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:33:16,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:33:16,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:33:16,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:33:16,484 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:33:16,484 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-10 11:33:16,487 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:33:16,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:33:16,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:33:16,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:33:16,514 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:33:16,514 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:33:16,515 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:33:16,515 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:33:16,515 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:33:16,515 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:33:16,516 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:33:16,516 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:33:16,517 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:33:16,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:33:16,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:33:16,518 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:33:16,518 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:33:16,518 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:33:16,518 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:33:16,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:33:16,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:33:16,521 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:33:16,521 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:33:16,521 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:33:16,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:33:16,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:33:16,522 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:33:16,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:33:16,522 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:33:16,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:33:16,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:33:16,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:33:16,523 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:33:16,523 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:33:16,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:33:16,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:33:16,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:33:16,609 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:33:16,609 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:33:16,610 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-09-10 11:33:16,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dd7e10f/fe1a892d8da24a6a8842eb6e8de779a0/FLAGcf32fd4f0 [2018-09-10 11:33:17,274 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:33:17,274 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-09-10 11:33:17,307 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dd7e10f/fe1a892d8da24a6a8842eb6e8de779a0/FLAGcf32fd4f0 [2018-09-10 11:33:17,337 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dd7e10f/fe1a892d8da24a6a8842eb6e8de779a0 [2018-09-10 11:33:17,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:33:17,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:33:17,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:33:17,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:33:17,360 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:33:17,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:33:17" (1/1) ... [2018-09-10 11:33:17,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f47f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:17, skipping insertion in model container [2018-09-10 11:33:17,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:33:17" (1/1) ... [2018-09-10 11:33:17,599 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:33:17,895 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:33:17,921 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:33:18,068 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:33:18,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18 WrapperNode [2018-09-10 11:33:18,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:33:18,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:33:18,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:33:18,113 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:33:18,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:33:18,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:33:18,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:33:18,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:33:18,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... [2018-09-10 11:33:18,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:33:18,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:33:18,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:33:18,527 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:33:18,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:33:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:33:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:33:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:33:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:33:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:33:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:33:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:33:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:33:22,077 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:33:22,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:33:22 BoogieIcfgContainer [2018-09-10 11:33:22,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:33:22,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:33:22,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:33:22,085 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:33:22,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:33:17" (1/3) ... [2018-09-10 11:33:22,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76de5005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:33:22, skipping insertion in model container [2018-09-10 11:33:22,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:33:18" (2/3) ... [2018-09-10 11:33:22,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76de5005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:33:22, skipping insertion in model container [2018-09-10 11:33:22,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:33:22" (3/3) ... [2018-09-10 11:33:22,089 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label59_true-unreach-call.c [2018-09-10 11:33:22,101 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:33:22,114 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:33:22,160 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:33:22,161 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:33:22,161 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:33:22,161 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:33:22,161 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:33:22,161 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:33:22,162 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:33:22,162 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:33:22,162 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:33:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-10 11:33:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-10 11:33:22,201 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:22,202 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:33:22,203 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:22,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1019321972, now seen corresponding path program 1 times [2018-09-10 11:33:22,211 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:22,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:22,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:22,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:22,262 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:22,823 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:33:22,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:33:22,824 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:33:22,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:33:22,848 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:33:22,848 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:33:22,852 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-09-10 11:33:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:33:25,375 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-09-10 11:33:25,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:33:25,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-09-10 11:33:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:33:25,398 INFO L225 Difference]: With dead ends: 737 [2018-09-10 11:33:25,398 INFO L226 Difference]: Without dead ends: 515 [2018-09-10 11:33:25,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:33:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-09-10 11:33:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-09-10 11:33:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-09-10 11:33:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-09-10 11:33:25,497 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 72 [2018-09-10 11:33:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:33:25,498 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-09-10 11:33:25,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:33:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-09-10 11:33:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-10 11:33:25,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:25,508 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:33:25,508 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1630388773, now seen corresponding path program 1 times [2018-09-10 11:33:25,509 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:25,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:25,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:25,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:25,510 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:25,895 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:33:25,895 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:33:25,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:25,909 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:33:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:26,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:33:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:26,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:33:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:26,437 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:33:26,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-10 11:33:26,438 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:33:26,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:33:26,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:33:26,440 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:33:26,440 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 3 states. [2018-09-10 11:33:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:33:27,696 INFO L93 Difference]: Finished difference Result 994 states and 1782 transitions. [2018-09-10 11:33:27,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:33:27,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-09-10 11:33:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:33:27,709 INFO L225 Difference]: With dead ends: 994 [2018-09-10 11:33:27,709 INFO L226 Difference]: Without dead ends: 644 [2018-09-10 11:33:27,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:33:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-09-10 11:33:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-09-10 11:33:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-09-10 11:33:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1034 transitions. [2018-09-10 11:33:27,776 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1034 transitions. Word has length 143 [2018-09-10 11:33:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:33:27,777 INFO L480 AbstractCegarLoop]: Abstraction has 644 states and 1034 transitions. [2018-09-10 11:33:27,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:33:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1034 transitions. [2018-09-10 11:33:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-10 11:33:27,784 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:27,785 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:33:27,785 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1733767164, now seen corresponding path program 1 times [2018-09-10 11:33:27,786 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:27,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:27,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:27,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:27,788 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:28,016 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:33:28,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:33:28,017 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:33:28,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:33:28,018 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:33:28,018 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:33:28,019 INFO L87 Difference]: Start difference. First operand 644 states and 1034 transitions. Second operand 6 states. [2018-09-10 11:33:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:33:32,146 INFO L93 Difference]: Finished difference Result 1847 states and 3197 transitions. [2018-09-10 11:33:32,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:33:32,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-09-10 11:33:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:33:32,166 INFO L225 Difference]: With dead ends: 1847 [2018-09-10 11:33:32,166 INFO L226 Difference]: Without dead ends: 1209 [2018-09-10 11:33:32,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:33:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-09-10 11:33:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1185. [2018-09-10 11:33:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-09-10 11:33:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1872 transitions. [2018-09-10 11:33:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1872 transitions. Word has length 154 [2018-09-10 11:33:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:33:32,231 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1872 transitions. [2018-09-10 11:33:32,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:33:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1872 transitions. [2018-09-10 11:33:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-10 11:33:32,238 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:32,238 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:33:32,238 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1561785849, now seen corresponding path program 1 times [2018-09-10 11:33:32,239 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:32,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:32,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:32,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:32,240 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:32,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:33:32,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:33:32,519 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:33:32,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:33:32,520 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:33:32,521 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:33:32,521 INFO L87 Difference]: Start difference. First operand 1185 states and 1872 transitions. Second operand 4 states. [2018-09-10 11:33:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:33:34,929 INFO L93 Difference]: Finished difference Result 2364 states and 3744 transitions. [2018-09-10 11:33:34,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:33:34,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2018-09-10 11:33:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:33:34,938 INFO L225 Difference]: With dead ends: 2364 [2018-09-10 11:33:34,939 INFO L226 Difference]: Without dead ends: 1185 [2018-09-10 11:33:34,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:33:34,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2018-09-10 11:33:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2018-09-10 11:33:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-09-10 11:33:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1698 transitions. [2018-09-10 11:33:34,982 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1698 transitions. Word has length 201 [2018-09-10 11:33:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:33:34,983 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1698 transitions. [2018-09-10 11:33:34,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:33:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1698 transitions. [2018-09-10 11:33:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-10 11:33:34,988 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:34,989 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:33:34,989 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash -809847816, now seen corresponding path program 1 times [2018-09-10 11:33:34,989 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:34,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:34,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:34,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:34,991 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:35,266 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:33:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:35,698 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:33:35,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:33:35,698 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:33:35,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:33:35,699 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:33:35,699 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:33:35,699 INFO L87 Difference]: Start difference. First operand 1185 states and 1698 transitions. Second operand 6 states. [2018-09-10 11:33:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:33:36,972 INFO L93 Difference]: Finished difference Result 3008 states and 4520 transitions. [2018-09-10 11:33:36,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:33:36,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-09-10 11:33:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:33:36,987 INFO L225 Difference]: With dead ends: 3008 [2018-09-10 11:33:36,988 INFO L226 Difference]: Without dead ends: 1829 [2018-09-10 11:33:36,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:33:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2018-09-10 11:33:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1793. [2018-09-10 11:33:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2018-09-10 11:33:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2543 transitions. [2018-09-10 11:33:37,063 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2543 transitions. Word has length 204 [2018-09-10 11:33:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:33:37,064 INFO L480 AbstractCegarLoop]: Abstraction has 1793 states and 2543 transitions. [2018-09-10 11:33:37,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:33:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2543 transitions. [2018-09-10 11:33:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-10 11:33:37,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:37,073 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:33:37,073 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:37,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1298522180, now seen corresponding path program 1 times [2018-09-10 11:33:37,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:37,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:37,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:37,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:37,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:33:37,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:33:37,356 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:33:37,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:37,365 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:33:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:37,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:33:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 11:33:37,666 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:33:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:33:38,632 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:33:38,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:33:38,633 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:33:38,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:33:38,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:33:38,636 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:33:38,636 INFO L87 Difference]: Start difference. First operand 1793 states and 2543 transitions. Second operand 5 states. [2018-09-10 11:33:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:33:40,683 INFO L93 Difference]: Finished difference Result 3895 states and 5541 transitions. [2018-09-10 11:33:40,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:33:40,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2018-09-10 11:33:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:33:40,694 INFO L225 Difference]: With dead ends: 3895 [2018-09-10 11:33:40,695 INFO L226 Difference]: Without dead ends: 2108 [2018-09-10 11:33:40,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:33:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-09-10 11:33:40,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2025. [2018-09-10 11:33:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2025 states. [2018-09-10 11:33:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2609 transitions. [2018-09-10 11:33:40,762 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2609 transitions. Word has length 224 [2018-09-10 11:33:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:33:40,762 INFO L480 AbstractCegarLoop]: Abstraction has 2025 states and 2609 transitions. [2018-09-10 11:33:40,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:33:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2609 transitions. [2018-09-10 11:33:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-10 11:33:40,769 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:33:40,770 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:33:40,770 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:33:40,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1893058164, now seen corresponding path program 1 times [2018-09-10 11:33:40,770 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:33:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:40,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:40,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:33:40,772 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:33:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:41,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:33:41,113 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:33:41,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:41,123 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:33:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:41,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:33:56,012 WARN L175 SmtUtils]: Spent 14.57 s on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2018-09-10 11:33:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:56,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:33:56,391 WARN L175 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-09-10 11:33:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:33:57,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:33:57,312 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:33:57,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:33:57,339 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:33:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:33:57,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:34:19,792 WARN L175 SmtUtils]: Spent 22.15 s on a formula simplification. DAG size of input: 113 DAG size of output: 57 [2018-09-10 11:34:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:34:23,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:34:24,252 WARN L175 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-09-10 11:34:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:34:24,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:34:24,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6, 7, 6] total 19 [2018-09-10 11:34:24,698 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:34:24,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-10 11:34:24,699 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-10 11:34:24,699 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=260, Unknown=1, NotChecked=0, Total=342 [2018-09-10 11:34:24,700 INFO L87 Difference]: Start difference. First operand 2025 states and 2609 transitions. Second operand 12 states. [2018-09-10 11:34:27,695 WARN L175 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-09-10 11:34:38,415 WARN L175 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-09-10 11:34:55,277 WARN L175 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 57 DAG size of output: 26 [2018-09-10 11:35:12,475 WARN L175 SmtUtils]: Spent 12.38 s on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-09-10 11:35:21,851 WARN L175 SmtUtils]: Spent 9.06 s on a formula simplification that was a NOOP. DAG size: 53 [2018-09-10 11:35:32,134 WARN L175 SmtUtils]: Spent 9.96 s on a formula simplification that was a NOOP. DAG size: 55 [2018-09-10 11:35:53,390 WARN L175 SmtUtils]: Spent 21.07 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-09-10 11:36:12,361 WARN L175 SmtUtils]: Spent 11.32 s on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2018-09-10 11:36:19,041 WARN L175 SmtUtils]: Spent 6.20 s on a formula simplification that was a NOOP. DAG size: 56 [2018-09-10 11:36:38,953 WARN L175 SmtUtils]: Spent 18.34 s on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-09-10 11:36:40,997 WARN L175 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-09-10 11:36:53,956 WARN L175 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-09-10 11:36:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:36:59,733 INFO L93 Difference]: Finished difference Result 6372 states and 8634 transitions. [2018-09-10 11:36:59,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-10 11:36:59,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 230 [2018-09-10 11:36:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:36:59,756 INFO L225 Difference]: With dead ends: 6372 [2018-09-10 11:36:59,756 INFO L226 Difference]: Without dead ends: 4353 [2018-09-10 11:36:59,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 926 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 177.8s TimeCoverageRelationStatistics Valid=805, Invalid=2374, Unknown=13, NotChecked=0, Total=3192 [2018-09-10 11:36:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2018-09-10 11:36:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3938. [2018-09-10 11:36:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3938 states. [2018-09-10 11:36:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 4869 transitions. [2018-09-10 11:36:59,873 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 4869 transitions. Word has length 230 [2018-09-10 11:36:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:36:59,874 INFO L480 AbstractCegarLoop]: Abstraction has 3938 states and 4869 transitions. [2018-09-10 11:36:59,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-10 11:36:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 4869 transitions. [2018-09-10 11:36:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-10 11:36:59,886 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:36:59,886 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:36:59,887 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:36:59,887 INFO L82 PathProgramCache]: Analyzing trace with hash -353802736, now seen corresponding path program 1 times [2018-09-10 11:36:59,887 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:36:59,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:36:59,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:36:59,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:36:59,888 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:36:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:00,140 WARN L175 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:37:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 131 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 11:37:01,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:01,012 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:37:01,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:01,028 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:01,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:37:01,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:37:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:37:02,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:02,009 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:37:02,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:02,025 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:02,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:37:02,278 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:37:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:37:02,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:37:02,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-10 11:37:02,374 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:37:02,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:37:02,375 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:37:02,375 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:37:02,376 INFO L87 Difference]: Start difference. First operand 3938 states and 4869 transitions. Second operand 11 states. [2018-09-10 11:37:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:37:05,401 INFO L93 Difference]: Finished difference Result 12143 states and 15440 transitions. [2018-09-10 11:37:05,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:37:05,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 234 [2018-09-10 11:37:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:37:05,414 INFO L225 Difference]: With dead ends: 12143 [2018-09-10 11:37:05,414 INFO L226 Difference]: Without dead ends: 3404 [2018-09-10 11:37:05,451 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 935 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2018-09-10 11:37:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2018-09-10 11:37:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2384. [2018-09-10 11:37:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2018-09-10 11:37:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 2617 transitions. [2018-09-10 11:37:05,514 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 2617 transitions. Word has length 234 [2018-09-10 11:37:05,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:37:05,515 INFO L480 AbstractCegarLoop]: Abstraction has 2384 states and 2617 transitions. [2018-09-10 11:37:05,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:37:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 2617 transitions. [2018-09-10 11:37:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-10 11:37:05,521 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:37:05,521 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:37:05,522 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:37:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1861263799, now seen corresponding path program 1 times [2018-09-10 11:37:05,522 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:37:05,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:37:05,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:05,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:37:05,523 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:37:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 130 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:37:06,035 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:06,035 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:37:06,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:06,047 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:06,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 11:37:06,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:37:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 130 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:37:06,436 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:37:06,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:37:06,436 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:37:06,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:37:06,437 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:37:06,437 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:37:06,437 INFO L87 Difference]: Start difference. First operand 2384 states and 2617 transitions. Second operand 5 states. [2018-09-10 11:37:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:37:07,593 INFO L93 Difference]: Finished difference Result 4938 states and 5418 transitions. [2018-09-10 11:37:07,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:37:07,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2018-09-10 11:37:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:37:07,604 INFO L225 Difference]: With dead ends: 4938 [2018-09-10 11:37:07,604 INFO L226 Difference]: Without dead ends: 2560 [2018-09-10 11:37:07,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 491 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:37:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2018-09-10 11:37:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2108. [2018-09-10 11:37:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2018-09-10 11:37:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2313 transitions. [2018-09-10 11:37:07,665 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2313 transitions. Word has length 247 [2018-09-10 11:37:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:37:07,666 INFO L480 AbstractCegarLoop]: Abstraction has 2108 states and 2313 transitions. [2018-09-10 11:37:07,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:37:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2313 transitions. [2018-09-10 11:37:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-10 11:37:07,676 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:37:07,677 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:37:07,677 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:37:07,677 INFO L82 PathProgramCache]: Analyzing trace with hash -366661461, now seen corresponding path program 1 times [2018-09-10 11:37:07,678 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:37:07,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:37:07,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:07,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:37:07,680 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:37:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 286 proven. 166 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:37:08,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:08,570 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:37:08,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:08,582 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:08,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-10 11:37:08,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:37:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-10 11:37:09,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:09,215 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:37:09,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:09,231 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:09,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-10 11:37:10,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:37:10,805 WARN L175 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-09-10 11:37:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-10 11:37:11,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:37:11,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-09-10 11:37:11,242 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:37:11,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-10 11:37:11,242 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-10 11:37:11,243 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2018-09-10 11:37:11,243 INFO L87 Difference]: Start difference. First operand 2108 states and 2313 transitions. Second operand 15 states. [2018-09-10 11:37:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:37:19,570 INFO L93 Difference]: Finished difference Result 5630 states and 6420 transitions. [2018-09-10 11:37:19,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-10 11:37:19,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 363 [2018-09-10 11:37:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:37:19,585 INFO L225 Difference]: With dead ends: 5630 [2018-09-10 11:37:19,585 INFO L226 Difference]: Without dead ends: 3672 [2018-09-10 11:37:19,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1526 GetRequests, 1470 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=543, Invalid=2427, Unknown=0, NotChecked=0, Total=2970 [2018-09-10 11:37:19,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2018-09-10 11:37:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3002. [2018-09-10 11:37:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3002 states. [2018-09-10 11:37:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3295 transitions. [2018-09-10 11:37:19,672 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3295 transitions. Word has length 363 [2018-09-10 11:37:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:37:19,673 INFO L480 AbstractCegarLoop]: Abstraction has 3002 states and 3295 transitions. [2018-09-10 11:37:19,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-10 11:37:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3295 transitions. [2018-09-10 11:37:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-09-10 11:37:19,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:37:19,685 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:37:19,686 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:37:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1827425236, now seen corresponding path program 1 times [2018-09-10 11:37:19,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:37:19,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:37:19,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:19,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:37:19,687 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:37:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 256 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:37:20,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:20,908 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:37:20,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:20,916 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:21,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:26,281 WARN L175 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2018-09-10 11:37:28,279 WARN L175 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 62 [2018-09-10 11:37:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 168 proven. 208 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-10 11:37:28,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:37:29,449 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2018-09-10 11:37:30,144 WARN L175 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2018-09-10 11:37:30,149 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,158 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,163 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,172 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,177 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,190 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,195 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,213 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,222 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,226 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,235 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,240 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,253 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,258 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,266 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,280 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,284 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,289 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,293 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,297 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,301 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,309 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,313 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,322 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,326 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,335 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,341 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,349 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,354 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,358 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,363 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,368 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,385 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,389 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,394 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,398 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,403 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,408 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,417 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,421 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,425 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,430 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,434 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,438 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,455 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,465 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,469 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,477 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,482 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,491 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,495 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,501 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:37:30,769 WARN L175 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-10 11:37:30,896 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-10 11:37:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-10 11:37:31,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:37:31,891 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:37:31,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:37:31,908 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:37:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:37:32,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:37:42,799 WARN L175 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 35 Received shutdown request... [2018-09-10 11:37:45,162 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 11:37:45,363 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:37:45,364 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:37:45,369 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:37:45,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:37:45 BoogieIcfgContainer [2018-09-10 11:37:45,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:37:45,370 INFO L168 Benchmark]: Toolchain (without parser) took 268020.10 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -502.5 MB). Peak memory consumption was 582.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:37:45,371 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:37:45,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:37:45,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 11:37:45,373 INFO L168 Benchmark]: Boogie Preprocessor took 298.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -867.9 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:37:45,377 INFO L168 Benchmark]: RCFGBuilder took 3551.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.0 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:37:45,378 INFO L168 Benchmark]: TraceAbstraction took 263289.51 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 310.9 MB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 202.6 MB). Peak memory consumption was 513.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:37:45,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 115.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 298.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -867.9 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3551.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.0 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263289.51 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 310.9 MB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 202.6 MB). Peak memory consumption was 513.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was analyzing trace of length 405 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 32 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 263.2s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 181.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1367 SDtfs, 8939 SDslu, 1430 SDs, 0 SdLazy, 17009 SolverSat, 3226 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 37.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4763 GetRequests, 4562 SyntacticMatches, 24 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 185.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3938occurred in iteration=7, 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: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 2859 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 52.5s InterpolantComputationTime, 4340 NumberOfCodeBlocks, 4340 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6580 ConstructedInterpolants, 9 QuantifiedInterpolants, 5991481 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3854 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 5152/5981 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/Problem10_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-37-45-397.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-37-45-397.csv Completed graceful shutdown