java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:03:31,333 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:03:31,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:03:31,352 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:03:31,353 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:03:31,355 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:03:31,356 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:03:31,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:03:31,361 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:03:31,362 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:03:31,363 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:03:31,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:03:31,366 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:03:31,367 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:03:31,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:03:31,369 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:03:31,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:03:31,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:03:31,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:03:31,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:03:31,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:03:31,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:03:31,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 12:03:31,389 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:03:31,408 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:03:31,409 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:03:31,409 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:03:31,410 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:03:31,410 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:03:31,410 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:03:31,410 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:03:31,410 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:03:31,411 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:03:31,411 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:03:31,411 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:03:31,412 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:03:31,412 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:03:31,412 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:03:31,412 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:03:31,412 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:03:31,413 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:03:31,413 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:03:31,413 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:03:31,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:03:31,414 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:03:31,414 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:03:31,414 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:03:31,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:03:31,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:03:31,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:03:31,415 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:03:31,415 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:03:31,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:03:31,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:03:31,415 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:03:31,416 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:03:31,416 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:03:31,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:03:31,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:03:31,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:03:31,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:03:31,483 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:03:31,484 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-07-24 12:03:31,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8bad538/9ba0832844a4485cbbe5375240580f6f/FLAG0539b9389 [2018-07-24 12:03:32,116 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:03:32,117 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-07-24 12:03:32,147 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8bad538/9ba0832844a4485cbbe5375240580f6f/FLAG0539b9389 [2018-07-24 12:03:32,169 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8bad538/9ba0832844a4485cbbe5375240580f6f [2018-07-24 12:03:32,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:03:32,182 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:03:32,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:03:32,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:03:32,190 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:03:32,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:32,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213a4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32, skipping insertion in model container [2018-07-24 12:03:32,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:32,405 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:03:32,708 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:03:32,735 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:03:32,920 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:03:32,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32 WrapperNode [2018-07-24 12:03:32,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:03:32,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:03:32,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:03:32,991 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:03:33,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:03:33,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:03:33,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:03:33,136 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:03:33,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... [2018-07-24 12:03:33,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:03:33,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:03:33,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:03:33,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:03:33,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:03:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:03:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:03:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:03:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:03:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:03:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:03:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-24 12:03:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-24 12:03:37,313 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:03:37,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:03:37 BoogieIcfgContainer [2018-07-24 12:03:37,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:03:37,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:03:37,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:03:37,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:03:37,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:03:32" (1/3) ... [2018-07-24 12:03:37,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212a0a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:03:37, skipping insertion in model container [2018-07-24 12:03:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:03:32" (2/3) ... [2018-07-24 12:03:37,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212a0a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:03:37, skipping insertion in model container [2018-07-24 12:03:37,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:03:37" (3/3) ... [2018-07-24 12:03:37,328 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label14_false-unreach-call_false-termination.c [2018-07-24 12:03:37,344 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:03:37,357 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:03:37,426 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:03:37,427 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:03:37,427 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:03:37,427 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:03:37,427 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:03:37,427 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:03:37,428 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:03:37,428 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:03:37,428 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:03:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-24 12:03:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-24 12:03:37,470 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:37,471 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:03:37,471 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1468902703, now seen corresponding path program 1 times [2018-07-24 12:03:37,480 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:37,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:37,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:37,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:37,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:37,897 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:03:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:37,974 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:03:37,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:03:37,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:37,980 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:03:37,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:03:37,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:03:37,998 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-24 12:03:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:39,752 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-24 12:03:39,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:03:39,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-07-24 12:03:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:39,774 INFO L225 Difference]: With dead ends: 691 [2018-07-24 12:03:39,774 INFO L226 Difference]: Without dead ends: 434 [2018-07-24 12:03:39,782 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:03:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-24 12:03:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-24 12:03:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-24 12:03:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 772 transitions. [2018-07-24 12:03:39,868 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 772 transitions. Word has length 33 [2018-07-24 12:03:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:39,869 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 772 transitions. [2018-07-24 12:03:39,869 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:03:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 772 transitions. [2018-07-24 12:03:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-24 12:03:39,875 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:39,876 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:03:39,876 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1903059540, now seen corresponding path program 1 times [2018-07-24 12:03:39,877 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:39,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:39,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:39,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:39,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:40,260 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:03:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:40,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:03:40,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:03:40,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:40,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:03:40,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:03:40,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:03:40,358 INFO L87 Difference]: Start difference. First operand 434 states and 772 transitions. Second operand 6 states. [2018-07-24 12:03:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:45,200 INFO L93 Difference]: Finished difference Result 1234 states and 2250 transitions. [2018-07-24 12:03:45,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:03:45,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-07-24 12:03:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:45,216 INFO L225 Difference]: With dead ends: 1234 [2018-07-24 12:03:45,216 INFO L226 Difference]: Without dead ends: 806 [2018-07-24 12:03:45,219 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:03:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-07-24 12:03:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-07-24 12:03:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-24 12:03:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2018-07-24 12:03:45,289 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 103 [2018-07-24 12:03:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:45,290 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2018-07-24 12:03:45,290 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:03:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2018-07-24 12:03:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-24 12:03:45,296 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:45,297 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:03:45,297 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1833981647, now seen corresponding path program 1 times [2018-07-24 12:03:45,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:45,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:45,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:45,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:45,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:45,538 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:03:45,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:03:45,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:45,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:03:45,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:03:45,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:03:45,540 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand 5 states. [2018-07-24 12:03:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:48,131 INFO L93 Difference]: Finished difference Result 2186 states and 3741 transitions. [2018-07-24 12:03:48,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:03:48,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-07-24 12:03:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:48,149 INFO L225 Difference]: With dead ends: 2186 [2018-07-24 12:03:48,150 INFO L226 Difference]: Without dead ends: 1395 [2018-07-24 12:03:48,153 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:03:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2018-07-24 12:03:48,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2018-07-24 12:03:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2018-07-24 12:03:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2191 transitions. [2018-07-24 12:03:48,224 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2191 transitions. Word has length 104 [2018-07-24 12:03:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:48,226 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2191 transitions. [2018-07-24 12:03:48,226 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:03:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2191 transitions. [2018-07-24 12:03:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-24 12:03:48,235 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:48,236 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:03:48,236 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1483014131, now seen corresponding path program 1 times [2018-07-24 12:03:48,236 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:48,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:48,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:48,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:48,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:48,398 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:03:48,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:03:48,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:48,399 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:03:48,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:03:48,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:03:48,399 INFO L87 Difference]: Start difference. First operand 1369 states and 2191 transitions. Second operand 5 states. [2018-07-24 12:03:51,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:51,419 INFO L93 Difference]: Finished difference Result 4058 states and 6474 transitions. [2018-07-24 12:03:51,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:03:51,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-07-24 12:03:51,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:51,438 INFO L225 Difference]: With dead ends: 4058 [2018-07-24 12:03:51,438 INFO L226 Difference]: Without dead ends: 2695 [2018-07-24 12:03:51,449 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:03:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2018-07-24 12:03:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2604. [2018-07-24 12:03:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2018-07-24 12:03:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3730 transitions. [2018-07-24 12:03:51,541 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3730 transitions. Word has length 106 [2018-07-24 12:03:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:51,542 INFO L471 AbstractCegarLoop]: Abstraction has 2604 states and 3730 transitions. [2018-07-24 12:03:51,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:03:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3730 transitions. [2018-07-24 12:03:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 12:03:51,545 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:51,545 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:03:51,551 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:51,551 INFO L82 PathProgramCache]: Analyzing trace with hash 72332224, now seen corresponding path program 1 times [2018-07-24 12:03:51,551 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:51,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:51,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:51,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:51,553 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:51,690 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:03:51,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:03:51,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:51,691 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:03:51,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:03:51,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:03:51,692 INFO L87 Difference]: Start difference. First operand 2604 states and 3730 transitions. Second operand 4 states. [2018-07-24 12:03:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:53,924 INFO L93 Difference]: Finished difference Result 8883 states and 12661 transitions. [2018-07-24 12:03:53,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:03:53,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-07-24 12:03:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:53,947 INFO L225 Difference]: With dead ends: 8883 [2018-07-24 12:03:53,947 INFO L226 Difference]: Without dead ends: 4408 [2018-07-24 12:03:53,980 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:03:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2018-07-24 12:03:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4406. [2018-07-24 12:03:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2018-07-24 12:03:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 5818 transitions. [2018-07-24 12:03:54,091 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 5818 transitions. Word has length 129 [2018-07-24 12:03:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:54,091 INFO L471 AbstractCegarLoop]: Abstraction has 4406 states and 5818 transitions. [2018-07-24 12:03:54,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:03:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 5818 transitions. [2018-07-24 12:03:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-24 12:03:54,097 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:54,097 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:03:54,097 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1827070027, now seen corresponding path program 1 times [2018-07-24 12:03:54,098 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:54,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:54,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:54,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:54,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:54,800 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:54,800 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:03:54,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:54,811 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:54,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:03:55,394 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:55,714 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-07-24 12:03:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:03:56,424 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:03:56,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-07-24 12:03:56,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:56,425 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:03:56,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:03:56,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:03:56,426 INFO L87 Difference]: Start difference. First operand 4406 states and 5818 transitions. Second operand 5 states. [2018-07-24 12:03:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:59,896 INFO L93 Difference]: Finished difference Result 11004 states and 14491 transitions. [2018-07-24 12:03:59,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:03:59,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2018-07-24 12:03:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:59,930 INFO L225 Difference]: With dead ends: 11004 [2018-07-24 12:03:59,930 INFO L226 Difference]: Without dead ends: 6604 [2018-07-24 12:03:59,952 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:03:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2018-07-24 12:04:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 6075. [2018-07-24 12:04:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6075 states. [2018-07-24 12:04:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 7943 transitions. [2018-07-24 12:04:00,127 INFO L78 Accepts]: Start accepts. Automaton has 6075 states and 7943 transitions. Word has length 191 [2018-07-24 12:04:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:00,127 INFO L471 AbstractCegarLoop]: Abstraction has 6075 states and 7943 transitions. [2018-07-24 12:04:00,127 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:04:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6075 states and 7943 transitions. [2018-07-24 12:04:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-24 12:04:00,133 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:00,133 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:04:00,133 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:00,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1127254689, now seen corresponding path program 1 times [2018-07-24 12:04:00,134 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:00,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:00,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:00,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:00,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:00,942 WARN L169 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-07-24 12:04:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:04:01,071 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:01,071 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:04:01,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:01,078 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:01,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:04:01,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:01,633 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:04:01,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:04:01,633 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:04:01,634 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:04:01,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:04:01,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:04:01,634 INFO L87 Difference]: Start difference. First operand 6075 states and 7943 transitions. Second operand 5 states. [2018-07-24 12:04:04,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:04:04,379 INFO L93 Difference]: Finished difference Result 15148 states and 20424 transitions. [2018-07-24 12:04:04,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:04:04,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-07-24 12:04:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:04:04,428 INFO L225 Difference]: With dead ends: 15148 [2018-07-24 12:04:04,428 INFO L226 Difference]: Without dead ends: 9262 [2018-07-24 12:04:04,459 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 428 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:04:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2018-07-24 12:04:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 9093. [2018-07-24 12:04:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9093 states. [2018-07-24 12:04:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9093 states to 9093 states and 11664 transitions. [2018-07-24 12:04:04,672 INFO L78 Accepts]: Start accepts. Automaton has 9093 states and 11664 transitions. Word has length 217 [2018-07-24 12:04:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:04,673 INFO L471 AbstractCegarLoop]: Abstraction has 9093 states and 11664 transitions. [2018-07-24 12:04:04,673 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:04:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9093 states and 11664 transitions. [2018-07-24 12:04:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-24 12:04:04,680 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:04,680 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:04:04,680 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:04,681 INFO L82 PathProgramCache]: Analyzing trace with hash 904628751, now seen corresponding path program 1 times [2018-07-24 12:04:04,681 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:04,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:04,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:04,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:04,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:05,159 WARN L169 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-07-24 12:04:05,606 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 12:04:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:06,031 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:06,032 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:04:06,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:06,042 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:06,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:04:06,617 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:07,100 WARN L169 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-07-24 12:04:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:07,559 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:04:07,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2018-07-24 12:04:07,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:04:07,560 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:04:07,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:04:07,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:04:07,561 INFO L87 Difference]: Start difference. First operand 9093 states and 11664 transitions. Second operand 6 states. [2018-07-24 12:04:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:04:10,191 INFO L93 Difference]: Finished difference Result 18395 states and 23670 transitions. [2018-07-24 12:04:10,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:04:10,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-07-24 12:04:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:04:10,241 INFO L225 Difference]: With dead ends: 18395 [2018-07-24 12:04:10,241 INFO L226 Difference]: Without dead ends: 9676 [2018-07-24 12:04:10,258 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 476 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:04:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9676 states. [2018-07-24 12:04:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9676 to 9623. [2018-07-24 12:04:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9623 states. [2018-07-24 12:04:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9623 states to 9623 states and 12318 transitions. [2018-07-24 12:04:10,451 INFO L78 Accepts]: Start accepts. Automaton has 9623 states and 12318 transitions. Word has length 241 [2018-07-24 12:04:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:10,452 INFO L471 AbstractCegarLoop]: Abstraction has 9623 states and 12318 transitions. [2018-07-24 12:04:10,452 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:04:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9623 states and 12318 transitions. [2018-07-24 12:04:10,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-24 12:04:10,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:10,461 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:04:10,462 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash -415147323, now seen corresponding path program 1 times [2018-07-24 12:04:10,462 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:10,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:10,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:10,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:10,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:10,952 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:04:11,160 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 12:04:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 165 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:11,627 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:11,627 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:04:11,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:11,636 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:11,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 231 proven. 52 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:04:12,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 88 proven. 217 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:12,738 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:12,739 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:04:12,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:12,755 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:12,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 231 proven. 52 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:04:13,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 88 proven. 217 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:13,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:04:13,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-07-24 12:04:13,685 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:04:13,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:04:13,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:04:13,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-07-24 12:04:13,686 INFO L87 Difference]: Start difference. First operand 9623 states and 12318 transitions. Second operand 15 states. [2018-07-24 12:04:16,747 WARN L169 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2018-07-24 12:04:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:04:19,761 INFO L93 Difference]: Finished difference Result 18899 states and 24441 transitions. [2018-07-24 12:04:19,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-24 12:04:19,762 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 276 [2018-07-24 12:04:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:04:19,788 INFO L225 Difference]: With dead ends: 18899 [2018-07-24 12:04:19,789 INFO L226 Difference]: Without dead ends: 9425 [2018-07-24 12:04:19,807 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1100 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2018-07-24 12:04:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9425 states. [2018-07-24 12:04:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9425 to 8998. [2018-07-24 12:04:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8998 states. [2018-07-24 12:04:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8998 states to 8998 states and 10636 transitions. [2018-07-24 12:04:19,979 INFO L78 Accepts]: Start accepts. Automaton has 8998 states and 10636 transitions. Word has length 276 [2018-07-24 12:04:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:19,980 INFO L471 AbstractCegarLoop]: Abstraction has 8998 states and 10636 transitions. [2018-07-24 12:04:19,980 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:04:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8998 states and 10636 transitions. [2018-07-24 12:04:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-24 12:04:19,988 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:19,988 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:04:19,988 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2013396525, now seen corresponding path program 1 times [2018-07-24 12:04:19,989 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:19,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:19,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:19,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:19,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:20,988 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:04:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:04:21,179 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:21,179 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:04:21,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:21,188 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:21,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:04:21,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:04:22,051 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:22,052 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:04:22,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:22,069 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:22,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 223 proven. 6 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:04:22,759 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:22,969 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-07-24 12:04:23,177 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-07-24 12:04:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:04:23,637 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:04:23,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 13 [2018-07-24 12:04:23,638 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:04:23,639 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 12:04:23,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 12:04:23,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:04:23,640 INFO L87 Difference]: Start difference. First operand 8998 states and 10636 transitions. Second operand 10 states. [2018-07-24 12:04:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:04:29,473 INFO L93 Difference]: Finished difference Result 19007 states and 23025 transitions. [2018-07-24 12:04:29,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-24 12:04:29,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 328 [2018-07-24 12:04:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:04:29,501 INFO L225 Difference]: With dead ends: 19007 [2018-07-24 12:04:29,501 INFO L226 Difference]: Without dead ends: 10383 [2018-07-24 12:04:29,522 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1370 GetRequests, 1325 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 12:04:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2018-07-24 12:04:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10257. [2018-07-24 12:04:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10257 states. [2018-07-24 12:04:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10257 states to 10257 states and 11651 transitions. [2018-07-24 12:04:29,682 INFO L78 Accepts]: Start accepts. Automaton has 10257 states and 11651 transitions. Word has length 328 [2018-07-24 12:04:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:29,683 INFO L471 AbstractCegarLoop]: Abstraction has 10257 states and 11651 transitions. [2018-07-24 12:04:29,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 12:04:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states and 11651 transitions. [2018-07-24 12:04:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-24 12:04:29,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:29,690 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:04:29,690 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash -638246030, now seen corresponding path program 1 times [2018-07-24 12:04:29,690 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:29,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:29,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:29,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:29,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-07-24 12:04:30,072 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:04:30,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:04:30,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:04:30,073 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:04:30,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:04:30,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:04:30,074 INFO L87 Difference]: Start difference. First operand 10257 states and 11651 transitions. Second operand 4 states. [2018-07-24 12:04:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:04:31,913 INFO L93 Difference]: Finished difference Result 26855 states and 31977 transitions. [2018-07-24 12:04:31,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:04:31,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-07-24 12:04:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:04:31,967 INFO L225 Difference]: With dead ends: 26855 [2018-07-24 12:04:31,967 INFO L226 Difference]: Without dead ends: 16972 [2018-07-24 12:04:32,006 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:04:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16972 states. [2018-07-24 12:04:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16972 to 16776. [2018-07-24 12:04:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16776 states. [2018-07-24 12:04:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16776 states to 16776 states and 19357 transitions. [2018-07-24 12:04:32,284 INFO L78 Accepts]: Start accepts. Automaton has 16776 states and 19357 transitions. Word has length 339 [2018-07-24 12:04:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:32,285 INFO L471 AbstractCegarLoop]: Abstraction has 16776 states and 19357 transitions. [2018-07-24 12:04:32,285 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:04:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 16776 states and 19357 transitions. [2018-07-24 12:04:32,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-24 12:04:32,294 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:32,295 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:04:32,295 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:32,296 INFO L82 PathProgramCache]: Analyzing trace with hash 48498909, now seen corresponding path program 1 times [2018-07-24 12:04:32,296 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:32,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:32,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:32,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:32,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:32,828 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:04:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 192 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:33,454 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:33,454 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:04:33,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:33,462 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:33,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:04:33,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 84 proven. 248 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:34,551 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:34,551 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:04:34,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:34,570 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:34,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:04:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 285 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 12:04:35,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:04:35,838 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-07-24 12:04:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 86 proven. 246 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:04:37,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:04:37,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8, 10, 11] total 39 [2018-07-24 12:04:37,092 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:04:37,092 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-24 12:04:37,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-24 12:04:37,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2018-07-24 12:04:37,093 INFO L87 Difference]: Start difference. First operand 16776 states and 19357 transitions. Second operand 18 states. [2018-07-24 12:04:40,168 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-07-24 12:04:41,259 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2018-07-24 12:04:42,339 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2018-07-24 12:04:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:04:44,246 INFO L93 Difference]: Finished difference Result 33389 states and 38670 transitions. [2018-07-24 12:04:44,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-24 12:04:44,247 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 352 [2018-07-24 12:04:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:04:44,288 INFO L225 Difference]: With dead ends: 33389 [2018-07-24 12:04:44,288 INFO L226 Difference]: Without dead ends: 16802 [2018-07-24 12:04:44,328 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1403 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=716, Invalid=3066, Unknown=0, NotChecked=0, Total=3782 [2018-07-24 12:04:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16802 states. [2018-07-24 12:04:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16802 to 16520. [2018-07-24 12:04:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16520 states. [2018-07-24 12:04:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16520 states to 16520 states and 19141 transitions. [2018-07-24 12:04:44,579 INFO L78 Accepts]: Start accepts. Automaton has 16520 states and 19141 transitions. Word has length 352 [2018-07-24 12:04:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:04:44,579 INFO L471 AbstractCegarLoop]: Abstraction has 16520 states and 19141 transitions. [2018-07-24 12:04:44,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-24 12:04:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 16520 states and 19141 transitions. [2018-07-24 12:04:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-07-24 12:04:44,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:04:44,603 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:04:44,603 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:04:44,603 INFO L82 PathProgramCache]: Analyzing trace with hash -8624879, now seen corresponding path program 1 times [2018-07-24 12:04:44,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:04:44,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:44,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:44,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:04:44,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:04:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 312 proven. 343 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 12:04:46,536 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:04:46,536 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:04:46,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:04:46,544 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:04:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:04:46,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:05:03,176 WARN L169 SmtUtils]: Spent 13.82 s on a formula simplification. DAG size of input: 3059 DAG size of output: 29 [2018-07-24 12:06:26,318 WARN L169 SmtUtils]: Spent 1.37 m on a formula simplification. DAG size of input: 305 DAG size of output: 133 [2018-07-24 12:06:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 418 proven. 132 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 12:06:27,071 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:06:27,284 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-07-24 12:06:27,691 WARN L169 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-07-24 12:06:35,042 WARN L169 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 597 DAG size of output: 25 [2018-07-24 12:06:37,241 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 71 [2018-07-24 12:06:37,644 WARN L172 XnfTransformerHelper]: Simplifying conjuction of 8694 disjunctions. This might take some time... [2018-07-24 12:06:37,940 INFO L188 XnfTransformerHelper]: Simplified to conjuction of 112 disjunctions. [2018-07-24 12:06:55,107 WARN L169 SmtUtils]: Spent 10.39 s on a formula simplification. DAG size of input: 180 DAG size of output: 39 [2018-07-24 12:06:55,371 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-07-24 12:06:55,615 WARN L169 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-07-24 12:06:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-07-24 12:06:56,985 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:06:56,986 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 12:06:57,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:06:57,002 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:06:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:06:57,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:07:03,510 WARN L169 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 175 DAG size of output: 63 [2018-07-24 12:07:10,442 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2018-07-24 12:07:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 301 proven. 222 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-07-24 12:07:11,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:07:11,692 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-07-24 12:07:11,945 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2018-07-24 12:07:12,754 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2018-07-24 12:07:13,618 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 13 [2018-07-24 12:07:14,324 WARN L169 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 24 [2018-07-24 12:07:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 123 proven. 422 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 12:07:15,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:07:15,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10, 6, 12, 12] total 52 [2018-07-24 12:07:15,763 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:07:15,764 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-24 12:07:15,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-24 12:07:15,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2372, Unknown=6, NotChecked=0, Total=2652 [2018-07-24 12:07:15,768 INFO L87 Difference]: Start difference. First operand 16520 states and 19141 transitions. Second operand 29 states. [2018-07-24 12:07:19,806 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2018-07-24 12:07:20,319 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 21 [2018-07-24 12:07:21,361 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 33 [2018-07-24 12:07:21,607 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 28 [2018-07-24 12:07:26,508 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2018-07-24 12:07:26,843 WARN L169 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2018-07-24 12:07:27,952 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2018-07-24 12:07:29,622 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-07-24 12:07:32,958 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2018-07-24 12:07:33,856 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2018-07-24 12:07:35,103 WARN L169 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 11 [2018-07-24 12:07:35,344 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-07-24 12:07:35,613 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-07-24 12:07:39,310 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-07-24 12:07:40,233 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-07-24 12:07:42,790 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 Received shutdown request... [2018-07-24 12:07:47,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-24 12:07:47,290 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:07:47,294 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:07:47,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:07:47 BoogieIcfgContainer [2018-07-24 12:07:47,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:07:47,295 INFO L168 Benchmark]: Toolchain (without parser) took 255113.88 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -269.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:07:47,296 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:07:47,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.45 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:07:47,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.32 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. [2018-07-24 12:07:47,298 INFO L168 Benchmark]: Boogie Preprocessor took 296.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -890.3 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-07-24 12:07:47,298 INFO L168 Benchmark]: RCFGBuilder took 3881.58 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: 135.9 MB). Peak memory consumption was 135.9 MB. Max. memory is 7.1 GB. [2018-07-24 12:07:47,299 INFO L168 Benchmark]: TraceAbstraction took 249979.03 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 421.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 12:07:47,303 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 806.45 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 145.32 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 296.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -890.3 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3881.58 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: 135.9 MB). Peak memory consumption was 135.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249979.03 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 421.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was constructing difference of abstraction (16520states) and interpolant automaton (currently 42 states, 29 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 89 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 249.8s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 76.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1084 SDtfs, 21159 SDslu, 2117 SDs, 0 SdLazy, 29297 SolverSat, 3988 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 44.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7400 GetRequests, 7074 SyntacticMatches, 37 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4196 ImplicationChecksByTransitivity, 172.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16776occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 1910 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 166.6s InterpolantComputationTime, 6453 NumberOfCodeBlocks, 6453 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 9961 ConstructedInterpolants, 85 QuantifiedInterpolants, 39085239 SizeOfPredicates, 62 NumberOfNonLiveVariables, 5891 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 7042/9796 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/Problem14_label14_false-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-07-47-315.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label14_false-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-07-47-315.csv Completed graceful shutdown