java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:56:20,419 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:56:20,420 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:56:20,432 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:56:20,433 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:56:20,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:56:20,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:56:20,437 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:56:20,439 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:56:20,441 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:56:20,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:56:20,444 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:56:20,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:56:20,446 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:56:20,447 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:56:20,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:56:20,455 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:56:20,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:56:20,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:56:20,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:56:20,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:56:20,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:56:20,467 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:56:20,467 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:56:20,467 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:56:20,468 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:56:20,469 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:56:20,470 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:56:20,470 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:56:20,471 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:56:20,472 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:56:20,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:56:20,473 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:56:20,473 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:56:20,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:56:20,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:56:20,475 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:56:20,500 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:56:20,500 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:56:20,501 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:56:20,501 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:56:20,501 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:56:20,501 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:56:20,502 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:56:20,502 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:56:20,502 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:56:20,502 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:56:20,502 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:56:20,503 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:56:20,503 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:56:20,504 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:56:20,504 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:56:20,504 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:56:20,504 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:56:20,504 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:56:20,505 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:56:20,505 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:56:20,505 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:56:20,505 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:56:20,505 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:56:20,505 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:56:20,506 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:56:20,506 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:56:20,506 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:56:20,506 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:56:20,506 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:56:20,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:56:20,507 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:56:20,507 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:56:20,507 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:56:20,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:56:20,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:56:20,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:56:20,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:56:20,584 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:56:20,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-09-10 11:56:20,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f125aae60/78d27f3c084e484683a1655ee198b575/FLAG9c9f81246 [2018-09-10 11:56:21,478 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:56:21,479 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-09-10 11:56:21,521 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f125aae60/78d27f3c084e484683a1655ee198b575/FLAG9c9f81246 [2018-09-10 11:56:21,539 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f125aae60/78d27f3c084e484683a1655ee198b575 [2018-09-10 11:56:21,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:56:21,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:56:21,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:56:21,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:56:21,562 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:56:21,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:56:21" (1/1) ... [2018-09-10 11:56:21,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f90d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:21, skipping insertion in model container [2018-09-10 11:56:21,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:56:21" (1/1) ... [2018-09-10 11:56:21,943 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:56:23,095 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:56:23,116 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:56:23,882 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:56:24,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24 WrapperNode [2018-09-10 11:56:24,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:56:24,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:56:24,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:56:24,287 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:56:24,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:24,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:24,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:56:24,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:56:24,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:56:24,586 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:56:25,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... [2018-09-10 11:56:25,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:56:25,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:56:25,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:56:25,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:56:25,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:56:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:56:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:56:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:56:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:56:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:56:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:56:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:56:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:56:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:56:25,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:56:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:56:25,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:56:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:56:25,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:56:38,729 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:56:38,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:56:38 BoogieIcfgContainer [2018-09-10 11:56:38,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:56:38,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:56:38,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:56:38,734 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:56:38,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:56:21" (1/3) ... [2018-09-10 11:56:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2f357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:56:38, skipping insertion in model container [2018-09-10 11:56:38,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:24" (2/3) ... [2018-09-10 11:56:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2f357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:56:38, skipping insertion in model container [2018-09-10 11:56:38,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:56:38" (3/3) ... [2018-09-10 11:56:38,737 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label38_true-unreach-call.c [2018-09-10 11:56:38,745 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:56:38,758 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:56:38,833 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:56:38,834 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:56:38,834 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:56:38,834 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:56:38,835 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:56:38,835 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:56:38,835 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:56:38,835 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:56:38,835 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:56:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:56:38,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-10 11:56:38,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:38,897 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:38,898 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:56:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2060228500, now seen corresponding path program 1 times [2018-09-10 11:56:38,907 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:38,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:38,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:38,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:38,954 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:39,513 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-10 11:56:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:39,572 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:39,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:56:39,573 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:39,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:56:39,596 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:56:39,597 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:56:39,599 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:56:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:55,264 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-10 11:56:55,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:56:55,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-09-10 11:56:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:55,314 INFO L225 Difference]: With dead ends: 3968 [2018-09-10 11:56:55,315 INFO L226 Difference]: Without dead ends: 2842 [2018-09-10 11:56:55,331 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:56:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-10 11:56:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-10 11:56:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-10 11:56:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-10 11:56:55,523 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 66 [2018-09-10 11:56:55,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:55,524 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-10 11:56:55,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:56:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-10 11:56:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-10 11:56:55,533 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:55,534 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:55,534 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:56:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash -509921872, now seen corresponding path program 1 times [2018-09-10 11:56:55,535 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:55,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:55,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:55,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:55,536 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:55,855 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:55,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:56:55,856 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:55,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:56:55,858 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:56:55,858 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:56:55,859 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 6 states. [2018-09-10 11:57:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:17,252 INFO L93 Difference]: Finished difference Result 7236 states and 13035 transitions. [2018-09-10 11:57:17,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:57:17,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-10 11:57:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:17,297 INFO L225 Difference]: With dead ends: 7236 [2018-09-10 11:57:17,298 INFO L226 Difference]: Without dead ends: 5261 [2018-09-10 11:57:17,311 INFO L604 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 [2018-09-10 11:57:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-09-10 11:57:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5234. [2018-09-10 11:57:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-09-10 11:57:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8155 transitions. [2018-09-10 11:57:17,570 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8155 transitions. Word has length 136 [2018-09-10 11:57:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:17,570 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8155 transitions. [2018-09-10 11:57:17,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:57:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8155 transitions. [2018-09-10 11:57:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-10 11:57:17,579 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:17,579 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:57:17,580 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash 182801932, now seen corresponding path program 1 times [2018-09-10 11:57:17,580 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:17,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:17,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:17,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:17,582 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:17,759 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:57:17,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:57:17,759 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:17,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:57:17,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:57:17,761 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:57:17,761 INFO L87 Difference]: Start difference. First operand 5234 states and 8155 transitions. Second operand 6 states. [2018-09-10 11:57:19,344 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-10 11:57:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:37,025 INFO L93 Difference]: Finished difference Result 16605 states and 27048 transitions. [2018-09-10 11:57:37,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:57:37,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-09-10 11:57:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:37,094 INFO L225 Difference]: With dead ends: 16605 [2018-09-10 11:57:37,094 INFO L226 Difference]: Without dead ends: 11377 [2018-09-10 11:57:37,118 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:57:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11377 states. [2018-09-10 11:57:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11377 to 11305. [2018-09-10 11:57:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11305 states. [2018-09-10 11:57:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11305 states to 11305 states and 16039 transitions. [2018-09-10 11:57:37,447 INFO L78 Accepts]: Start accepts. Automaton has 11305 states and 16039 transitions. Word has length 138 [2018-09-10 11:57:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:37,448 INFO L480 AbstractCegarLoop]: Abstraction has 11305 states and 16039 transitions. [2018-09-10 11:57:37,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:57:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11305 states and 16039 transitions. [2018-09-10 11:57:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-10 11:57:37,451 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:37,451 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:57:37,451 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:37,452 INFO L82 PathProgramCache]: Analyzing trace with hash 527910257, now seen corresponding path program 1 times [2018-09-10 11:57:37,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:37,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:37,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:37,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:37,453 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:37,720 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:57:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:37,955 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:57:37,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:57:37,955 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:37,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:57:37,956 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:57:37,956 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:57:37,956 INFO L87 Difference]: Start difference. First operand 11305 states and 16039 transitions. Second operand 6 states. [2018-09-10 11:57:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:51,057 INFO L93 Difference]: Finished difference Result 33978 states and 52432 transitions. [2018-09-10 11:57:51,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:57:51,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-09-10 11:57:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:51,189 INFO L225 Difference]: With dead ends: 33978 [2018-09-10 11:57:51,190 INFO L226 Difference]: Without dead ends: 22679 [2018-09-10 11:57:51,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:57:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22679 states. [2018-09-10 11:57:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22679 to 22378. [2018-09-10 11:57:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22378 states. [2018-09-10 11:57:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22378 states to 22378 states and 32149 transitions. [2018-09-10 11:57:51,999 INFO L78 Accepts]: Start accepts. Automaton has 22378 states and 32149 transitions. Word has length 149 [2018-09-10 11:57:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:52,000 INFO L480 AbstractCegarLoop]: Abstraction has 22378 states and 32149 transitions. [2018-09-10 11:57:52,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:57:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 22378 states and 32149 transitions. [2018-09-10 11:57:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-10 11:57:52,012 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:52,012 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:57:52,013 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1100914, now seen corresponding path program 1 times [2018-09-10 11:57:52,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:52,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:52,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:52,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:52,018 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:52,375 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:57:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 118 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:57:52,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:52,953 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:57:52,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:52,968 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:53,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:57:53,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 118 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:57:54,247 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:54,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 11:57:54,248 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:54,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:54,249 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:54,249 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:57:54,249 INFO L87 Difference]: Start difference. First operand 22378 states and 32149 transitions. Second operand 5 states. [2018-09-10 11:58:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:10,779 INFO L93 Difference]: Finished difference Result 59308 states and 90378 transitions. [2018-09-10 11:58:10,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:58:10,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2018-09-10 11:58:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:10,993 INFO L225 Difference]: With dead ends: 59308 [2018-09-10 11:58:10,993 INFO L226 Difference]: Without dead ends: 36936 [2018-09-10 11:58:11,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 465 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:58:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36936 states. [2018-09-10 11:58:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36936 to 36618. [2018-09-10 11:58:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36618 states. [2018-09-10 11:58:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36618 states to 36618 states and 51168 transitions. [2018-09-10 11:58:12,130 INFO L78 Accepts]: Start accepts. Automaton has 36618 states and 51168 transitions. Word has length 235 [2018-09-10 11:58:12,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:12,131 INFO L480 AbstractCegarLoop]: Abstraction has 36618 states and 51168 transitions. [2018-09-10 11:58:12,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 36618 states and 51168 transitions. [2018-09-10 11:58:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-10 11:58:12,143 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:12,144 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:12,144 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:12,144 INFO L82 PathProgramCache]: Analyzing trace with hash 900312594, now seen corresponding path program 1 times [2018-09-10 11:58:12,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:12,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:12,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:12,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:12,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:12,484 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:12,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:58:12,484 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:12,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:58:12,485 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:58:12,486 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:58:12,486 INFO L87 Difference]: Start difference. First operand 36618 states and 51168 transitions. Second operand 4 states. [2018-09-10 11:58:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:23,911 INFO L93 Difference]: Finished difference Result 100424 states and 151973 transitions. [2018-09-10 11:58:23,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:58:23,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-09-10 11:58:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:24,255 INFO L225 Difference]: With dead ends: 100424 [2018-09-10 11:58:24,256 INFO L226 Difference]: Without dead ends: 63812 [2018-09-10 11:58:24,376 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:58:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63812 states. [2018-09-10 11:58:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63812 to 63805. [2018-09-10 11:58:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63805 states. [2018-09-10 11:58:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63805 states to 63805 states and 91036 transitions. [2018-09-10 11:58:26,221 INFO L78 Accepts]: Start accepts. Automaton has 63805 states and 91036 transitions. Word has length 261 [2018-09-10 11:58:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:26,222 INFO L480 AbstractCegarLoop]: Abstraction has 63805 states and 91036 transitions. [2018-09-10 11:58:26,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:58:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 63805 states and 91036 transitions. [2018-09-10 11:58:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-09-10 11:58:26,280 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:26,281 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:26,281 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash -146863621, now seen corresponding path program 1 times [2018-09-10 11:58:26,282 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:26,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:26,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:26,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:26,283 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 385 proven. 6 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 11:58:26,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:26,884 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-10 11:58:26,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:26,897 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:58:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:27,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 11:58:27,632 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 11:58:28,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:28,431 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:58:28,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:28,465 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:28,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 385 proven. 6 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 11:58:29,026 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 387 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 11:58:29,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:58:29,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 12 [2018-09-10 11:58:29,777 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:58:29,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 11:58:29,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 11:58:29,780 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:58:29,780 INFO L87 Difference]: Start difference. First operand 63805 states and 91036 transitions. Second operand 8 states. [2018-09-10 11:58:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:43,005 INFO L93 Difference]: Finished difference Result 126587 states and 187312 transitions. [2018-09-10 11:58:43,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 11:58:43,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 451 [2018-09-10 11:58:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:43,255 INFO L225 Difference]: With dead ends: 126587 [2018-09-10 11:58:43,255 INFO L226 Difference]: Without dead ends: 62788 [2018-09-10 11:58:43,405 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1819 GetRequests, 1800 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:58:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62788 states. [2018-09-10 11:58:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62788 to 62504. [2018-09-10 11:58:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62504 states. [2018-09-10 11:58:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62504 states to 62504 states and 79913 transitions. [2018-09-10 11:58:45,236 INFO L78 Accepts]: Start accepts. Automaton has 62504 states and 79913 transitions. Word has length 451 [2018-09-10 11:58:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:45,237 INFO L480 AbstractCegarLoop]: Abstraction has 62504 states and 79913 transitions. [2018-09-10 11:58:45,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 11:58:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 62504 states and 79913 transitions. [2018-09-10 11:58:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-09-10 11:58:45,307 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:45,308 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:45,308 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1023630257, now seen corresponding path program 1 times [2018-09-10 11:58:45,309 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:45,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:45,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:45,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:45,310 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:58:45,842 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:45,842 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:58:45,842 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:45,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:58:45,843 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:58:45,843 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:58:45,843 INFO L87 Difference]: Start difference. First operand 62504 states and 79913 transitions. Second operand 4 states. [2018-09-10 11:59:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:00,759 INFO L93 Difference]: Finished difference Result 220204 states and 297241 transitions. [2018-09-10 11:59:00,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:59:00,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 538 [2018-09-10 11:59:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:01,166 INFO L225 Difference]: With dead ends: 220204 [2018-09-10 11:59:01,166 INFO L226 Difference]: Without dead ends: 157706 [2018-09-10 11:59:01,312 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:59:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157706 states. [2018-09-10 11:59:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157706 to 155915. [2018-09-10 11:59:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155915 states. [2018-09-10 11:59:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155915 states to 155915 states and 205817 transitions. [2018-09-10 11:59:04,962 INFO L78 Accepts]: Start accepts. Automaton has 155915 states and 205817 transitions. Word has length 538 [2018-09-10 11:59:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:04,964 INFO L480 AbstractCegarLoop]: Abstraction has 155915 states and 205817 transitions. [2018-09-10 11:59:04,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:59:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 155915 states and 205817 transitions. [2018-09-10 11:59:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-09-10 11:59:05,094 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:05,095 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:05,095 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:05,095 INFO L82 PathProgramCache]: Analyzing trace with hash 606959597, now seen corresponding path program 1 times [2018-09-10 11:59:05,096 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:05,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:05,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:05,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:05,097 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:59:06,134 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:06,134 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:59:06,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:06,151 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:06,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-09-10 11:59:06,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 177 proven. 199 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 11:59:08,268 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:59:08,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:59:08,268 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:08,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:08,269 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:08,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:59:08,270 INFO L87 Difference]: Start difference. First operand 155915 states and 205817 transitions. Second operand 5 states. [2018-09-10 11:59:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:24,598 INFO L93 Difference]: Finished difference Result 332103 states and 436982 transitions. [2018-09-10 11:59:24,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:59:24,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 552 [2018-09-10 11:59:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:25,127 INFO L225 Difference]: With dead ends: 332103 [2018-09-10 11:59:25,128 INFO L226 Difference]: Without dead ends: 176194 [2018-09-10 11:59:25,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:59:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176194 states. [2018-09-10 11:59:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176194 to 175105. [2018-09-10 11:59:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175105 states. [2018-09-10 11:59:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175105 states to 175105 states and 226922 transitions. [2018-09-10 11:59:29,100 INFO L78 Accepts]: Start accepts. Automaton has 175105 states and 226922 transitions. Word has length 552 [2018-09-10 11:59:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:29,101 INFO L480 AbstractCegarLoop]: Abstraction has 175105 states and 226922 transitions. [2018-09-10 11:59:29,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:59:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 175105 states and 226922 transitions. [2018-09-10 11:59:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-09-10 11:59:29,184 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:29,185 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:29,185 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1208587299, now seen corresponding path program 1 times [2018-09-10 11:59:29,186 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:29,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:29,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:29,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:29,187 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 281 proven. 133 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:59:29,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:29,691 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:29,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:29,700 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:29,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 451 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:59:31,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 281 proven. 133 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:59:32,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:32,054 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:59:32,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:32,071 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:32,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 451 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:59:33,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 281 proven. 133 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:59:34,263 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:59:34,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:59:34,263 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:59:34,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:59:34,265 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:59:34,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:59:34,266 INFO L87 Difference]: Start difference. First operand 175105 states and 226922 transitions. Second operand 9 states. Received shutdown request... [2018-09-10 12:00:06,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:00:06,621 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:00:06,626 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:00:06,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:00:06 BoogieIcfgContainer [2018-09-10 12:00:06,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:00:06,628 INFO L168 Benchmark]: Toolchain (without parser) took 225076.70 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-09-10 12:00:06,629 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:00:06,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2730.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 331.3 MB). Peak memory consumption was 331.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:00:06,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 298.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:00:06,631 INFO L168 Benchmark]: Boogie Preprocessor took 1194.52 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 996.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:00:06,632 INFO L168 Benchmark]: RCFGBuilder took 12950.40 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 160.4 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 69.5 MB). Peak memory consumption was 750.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:00:06,632 INFO L168 Benchmark]: TraceAbstraction took 207895.85 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -937.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:00:06,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2730.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 331.3 MB). Peak memory consumption was 331.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 298.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1194.52 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 996.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12950.40 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 160.4 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 69.5 MB). Peak memory consumption was 750.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207895.85 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -937.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was constructing difference of abstraction (175105states) and FLOYD_HOARE automaton (currently 20 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (410553 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 177.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5876 SDtfs, 43501 SDslu, 5323 SDs, 0 SdLazy, 68763 SolverSat, 16995 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 135.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5796 GetRequests, 5697 SyntacticMatches, 12 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175105occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 4750 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 5949 NumberOfCodeBlocks, 5949 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8772 ConstructedInterpolants, 0 QuantifiedInterpolants, 9845879 SizeOfPredicates, 8 NumberOfNonLiveVariables, 4373 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 6744/7514 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/Problem13_label38_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-00-06-653.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label38_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-00-06-653.csv Completed graceful shutdown