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/Problem12_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:52:43,380 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:52:43,382 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:52:43,401 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:52:43,401 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:52:43,402 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:52:43,403 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:52:43,406 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:52:43,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:52:43,409 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:52:43,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:52:43,410 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:52:43,412 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:52:43,413 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:52:43,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:52:43,419 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:52:43,420 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:52:43,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:52:43,432 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:52:43,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:52:43,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:52:43,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:52:43,445 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:52:43,445 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:52:43,446 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:52:43,446 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:52:43,448 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:52:43,449 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:52:43,450 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:52:43,454 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:52:43,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:52:43,456 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:52:43,457 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:52:43,457 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:52:43,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:52:43,460 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:52:43,460 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:52:43,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:52:43,485 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:52:43,486 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:52:43,486 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:52:43,487 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:52:43,487 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:52:43,487 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:52:43,487 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:52:43,487 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:52:43,487 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:52:43,488 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:52:43,488 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:52:43,489 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:52:43,489 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:52:43,489 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:52:43,489 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:52:43,489 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:52:43,489 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:52:43,490 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:52:43,490 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:52:43,490 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:52:43,490 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:52:43,490 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:52:43,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:52:43,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:52:43,491 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:52:43,491 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:52:43,491 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:52:43,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:52:43,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:52:43,492 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:52:43,492 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:52:43,492 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:52:43,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:52:43,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:52:43,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:52:43,586 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:52:43,586 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:52:43,587 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-07-24 11:52:43,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7057da89a/4e0ae09168544ae5933ca8742470ce3e/FLAG5c7572fd7 [2018-07-24 11:52:44,407 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:52:44,409 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-07-24 11:52:44,449 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7057da89a/4e0ae09168544ae5933ca8742470ce3e/FLAG5c7572fd7 [2018-07-24 11:52:44,465 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7057da89a/4e0ae09168544ae5933ca8742470ce3e [2018-07-24 11:52:44,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:52:44,479 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:52:44,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:52:44,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:52:44,487 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:52:44,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:52:44" (1/1) ... [2018-07-24 11:52:44,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d9fee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:44, skipping insertion in model container [2018-07-24 11:52:44,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:52:44" (1/1) ... [2018-07-24 11:52:44,856 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:52:45,965 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:52:45,983 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:52:46,626 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:52:46,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46 WrapperNode [2018-07-24 11:52:46,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:52:46,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:52:46,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:52:46,887 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:52:46,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:46,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:52:47,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:52:47,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:52:47,142 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:52:47,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:47,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... [2018-07-24 11:52:48,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:52:48,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:52:48,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:52:48,078 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:52:48,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:52:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:52:48,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:52:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:52:48,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:52:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:52:48,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:52:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:52:48,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:52:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:52:48,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:52:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:52:48,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:52:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:52:48,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:52:58,094 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:52:58,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:52:58 BoogieIcfgContainer [2018-07-24 11:52:58,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:52:58,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:52:58,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:52:58,100 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:52:58,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:52:44" (1/3) ... [2018-07-24 11:52:58,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60174587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:52:58, skipping insertion in model container [2018-07-24 11:52:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:46" (2/3) ... [2018-07-24 11:52:58,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60174587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:52:58, skipping insertion in model container [2018-07-24 11:52:58,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:52:58" (3/3) ... [2018-07-24 11:52:58,104 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48_false-unreach-call.c [2018-07-24 11:52:58,114 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:52:58,123 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:52:58,184 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:52:58,185 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:52:58,185 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:52:58,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:52:58,186 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:52:58,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:52:58,186 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:52:58,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:52:58,186 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:52:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 11:52:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-24 11:52:58,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:58,233 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:52:58,233 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:52:58,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1153865829, now seen corresponding path program 1 times [2018-07-24 11:52:58,242 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:58,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:58,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:58,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:58,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:58,630 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:52:58,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:52:58,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:58,637 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:52:58,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:52:58,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:52:58,658 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 11:53:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:06,800 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 11:53:06,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:53:06,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-07-24 11:53:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:06,857 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 11:53:06,858 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 11:53:06,874 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:53:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 11:53:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 11:53:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 11:53:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-07-24 11:53:07,054 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 17 [2018-07-24 11:53:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:07,054 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-07-24 11:53:07,055 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:53:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-07-24 11:53:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-24 11:53:07,062 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:07,063 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:07,063 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:53:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash 167691348, now seen corresponding path program 1 times [2018-07-24 11:53:07,064 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:07,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:07,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:07,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:07,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:07,452 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:53:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:07,680 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:07,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:53:07,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:07,682 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:53:07,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:53:07,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:53:07,683 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-07-24 11:53:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:20,234 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-07-24 11:53:20,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:20,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-07-24 11:53:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:20,269 INFO L225 Difference]: With dead ends: 4818 [2018-07-24 11:53:20,270 INFO L226 Difference]: Without dead ends: 3220 [2018-07-24 11:53:20,276 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:53:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-07-24 11:53:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-07-24 11:53:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-07-24 11:53:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-07-24 11:53:20,379 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 91 [2018-07-24 11:53:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:20,380 INFO L471 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-07-24 11:53:20,380 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:53:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-07-24 11:53:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-24 11:53:20,382 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:20,383 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:20,383 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:53:20,383 INFO L82 PathProgramCache]: Analyzing trace with hash 387109557, now seen corresponding path program 1 times [2018-07-24 11:53:20,383 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:20,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:20,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:20,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:20,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:20,656 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:20,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:53:20,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:20,657 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:53:20,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:53:20,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:53:20,658 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-07-24 11:53:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:30,771 INFO L93 Difference]: Finished difference Result 8020 states and 14102 transitions. [2018-07-24 11:53:30,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:30,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-07-24 11:53:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:30,802 INFO L225 Difference]: With dead ends: 8020 [2018-07-24 11:53:30,803 INFO L226 Difference]: Without dead ends: 4840 [2018-07-24 11:53:30,814 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:53:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2018-07-24 11:53:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 4811. [2018-07-24 11:53:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4811 states. [2018-07-24 11:53:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7666 transitions. [2018-07-24 11:53:30,984 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7666 transitions. Word has length 96 [2018-07-24 11:53:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:30,985 INFO L471 AbstractCegarLoop]: Abstraction has 4811 states and 7666 transitions. [2018-07-24 11:53:30,985 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:53:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7666 transitions. [2018-07-24 11:53:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-24 11:53:30,988 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:30,988 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:30,988 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:53:30,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1135096763, now seen corresponding path program 1 times [2018-07-24 11:53:30,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:30,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:30,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:30,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:30,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:31,155 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:31,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:53:31,155 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:31,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:53:31,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:53:31,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:53:31,157 INFO L87 Difference]: Start difference. First operand 4811 states and 7666 transitions. Second operand 6 states. [2018-07-24 11:53:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:44,060 INFO L93 Difference]: Finished difference Result 12775 states and 20227 transitions. [2018-07-24 11:53:44,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:44,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-07-24 11:53:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:44,099 INFO L225 Difference]: With dead ends: 12775 [2018-07-24 11:53:44,100 INFO L226 Difference]: Without dead ends: 7970 [2018-07-24 11:53:44,122 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:53:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7970 states. [2018-07-24 11:53:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 7941. [2018-07-24 11:53:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7941 states. [2018-07-24 11:53:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 11181 transitions. [2018-07-24 11:53:44,509 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 11181 transitions. Word has length 104 [2018-07-24 11:53:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:44,509 INFO L471 AbstractCegarLoop]: Abstraction has 7941 states and 11181 transitions. [2018-07-24 11:53:44,509 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:53:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 11181 transitions. [2018-07-24 11:53:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-24 11:53:44,515 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:44,517 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:44,518 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:53:44,519 INFO L82 PathProgramCache]: Analyzing trace with hash -507399568, now seen corresponding path program 1 times [2018-07-24 11:53:44,519 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:44,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:44,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:44,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:44,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:44,834 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:44,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:53:44,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:44,835 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:53:44,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:53:44,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:53:44,836 INFO L87 Difference]: Start difference. First operand 7941 states and 11181 transitions. Second operand 5 states. [2018-07-24 11:54:05,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:05,940 INFO L93 Difference]: Finished difference Result 27292 states and 39306 transitions. [2018-07-24 11:54:05,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:54:05,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-07-24 11:54:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:06,022 INFO L225 Difference]: With dead ends: 27292 [2018-07-24 11:54:06,023 INFO L226 Difference]: Without dead ends: 19357 [2018-07-24 11:54:06,060 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 11:54:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19357 states. [2018-07-24 11:54:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19357 to 19134. [2018-07-24 11:54:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19134 states. [2018-07-24 11:54:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19134 states to 19134 states and 25015 transitions. [2018-07-24 11:54:06,502 INFO L78 Accepts]: Start accepts. Automaton has 19134 states and 25015 transitions. Word has length 121 [2018-07-24 11:54:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:06,503 INFO L471 AbstractCegarLoop]: Abstraction has 19134 states and 25015 transitions. [2018-07-24 11:54:06,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:54:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 19134 states and 25015 transitions. [2018-07-24 11:54:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-24 11:54:06,508 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:06,509 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:54:06,509 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash -28552504, now seen corresponding path program 1 times [2018-07-24 11:54:06,509 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:06,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:06,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:06,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:06,513 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 11:54:06,963 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:06,963 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:54:06,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:06,976 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:07,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 11:54:07,294 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:07,540 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:54:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 11:54:08,081 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:54:08,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 11:54:08,081 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:08,082 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:54:08,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:54:08,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:54:08,083 INFO L87 Difference]: Start difference. First operand 19134 states and 25015 transitions. Second operand 5 states. [2018-07-24 11:54:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:20,426 INFO L93 Difference]: Finished difference Result 49576 states and 67247 transitions. [2018-07-24 11:54:20,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:54:20,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2018-07-24 11:54:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:20,560 INFO L225 Difference]: With dead ends: 49576 [2018-07-24 11:54:20,561 INFO L226 Difference]: Without dead ends: 30448 [2018-07-24 11:54:20,625 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 358 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:54:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30448 states. [2018-07-24 11:54:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30448 to 28989. [2018-07-24 11:54:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28989 states. [2018-07-24 11:54:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28989 states to 28989 states and 37265 transitions. [2018-07-24 11:54:21,304 INFO L78 Accepts]: Start accepts. Automaton has 28989 states and 37265 transitions. Word has length 180 [2018-07-24 11:54:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:21,304 INFO L471 AbstractCegarLoop]: Abstraction has 28989 states and 37265 transitions. [2018-07-24 11:54:21,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:54:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28989 states and 37265 transitions. [2018-07-24 11:54:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-24 11:54:21,309 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:21,310 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:54:21,310 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2027216581, now seen corresponding path program 1 times [2018-07-24 11:54:21,310 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:21,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:21,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:21,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:21,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:21,586 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:54:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:54:22,010 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:22,010 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:54:22,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:22,028 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:22,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 11:54:22,624 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:54:23,142 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:54:23,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:54:23,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:23,143 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:54:23,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:54:23,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:54:23,144 INFO L87 Difference]: Start difference. First operand 28989 states and 37265 transitions. Second operand 5 states. [2018-07-24 11:54:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:31,683 INFO L93 Difference]: Finished difference Result 61232 states and 79299 transitions. [2018-07-24 11:54:31,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:54:31,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-07-24 11:54:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:31,786 INFO L225 Difference]: With dead ends: 61232 [2018-07-24 11:54:31,787 INFO L226 Difference]: Without dead ends: 32249 [2018-07-24 11:54:31,842 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 409 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:54:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32249 states. [2018-07-24 11:54:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32249 to 32198. [2018-07-24 11:54:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32198 states. [2018-07-24 11:54:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32198 states to 32198 states and 39870 transitions. [2018-07-24 11:54:32,396 INFO L78 Accepts]: Start accepts. Automaton has 32198 states and 39870 transitions. Word has length 207 [2018-07-24 11:54:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:32,397 INFO L471 AbstractCegarLoop]: Abstraction has 32198 states and 39870 transitions. [2018-07-24 11:54:32,397 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:54:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32198 states and 39870 transitions. [2018-07-24 11:54:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-24 11:54:32,403 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:32,403 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:54:32,403 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:32,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1127713894, now seen corresponding path program 1 times [2018-07-24 11:54:32,404 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:32,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:32,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:32,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:32,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:54:32,678 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:54:32,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:54:32,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:32,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:54:32,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:54:32,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:54:32,679 INFO L87 Difference]: Start difference. First operand 32198 states and 39870 transitions. Second operand 4 states. [2018-07-24 11:54:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:40,467 INFO L93 Difference]: Finished difference Result 64390 states and 79865 transitions. [2018-07-24 11:54:40,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:54:40,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2018-07-24 11:54:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:40,534 INFO L225 Difference]: With dead ends: 64390 [2018-07-24 11:54:40,534 INFO L226 Difference]: Without dead ends: 25735 [2018-07-24 11:54:40,585 INFO L573 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 [2018-07-24 11:54:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25735 states. [2018-07-24 11:54:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25735 to 25725. [2018-07-24 11:54:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25725 states. [2018-07-24 11:54:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25725 states to 25725 states and 29554 transitions. [2018-07-24 11:54:40,972 INFO L78 Accepts]: Start accepts. Automaton has 25725 states and 29554 transitions. Word has length 240 [2018-07-24 11:54:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:40,972 INFO L471 AbstractCegarLoop]: Abstraction has 25725 states and 29554 transitions. [2018-07-24 11:54:40,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:54:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 25725 states and 29554 transitions. [2018-07-24 11:54:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-24 11:54:40,979 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:40,979 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:54:40,979 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:40,980 INFO L82 PathProgramCache]: Analyzing trace with hash 526868074, now seen corresponding path program 1 times [2018-07-24 11:54:40,980 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:40,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:40,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:40,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:40,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 30 proven. 137 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 11:54:41,542 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:41,542 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:54:41,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:41,550 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:41,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:41,993 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 11:54:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 11:54:42,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:42,323 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2018-07-24 11:54:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 30 proven. 137 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 11:54:43,292 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:54:43,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:54:43,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:43,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:54:43,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:54:43,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:54:43,294 INFO L87 Difference]: Start difference. First operand 25725 states and 29554 transitions. Second operand 5 states. [2018-07-24 11:54:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:52,826 INFO L93 Difference]: Finished difference Result 57374 states and 65913 transitions. [2018-07-24 11:54:52,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:54:52,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2018-07-24 11:54:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:52,897 INFO L225 Difference]: With dead ends: 57374 [2018-07-24 11:54:52,897 INFO L226 Difference]: Without dead ends: 31655 [2018-07-24 11:54:52,937 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 622 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:54:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31655 states. [2018-07-24 11:54:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31655 to 30998. [2018-07-24 11:54:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30998 states. [2018-07-24 11:54:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30998 states to 30998 states and 35109 transitions. [2018-07-24 11:54:53,395 INFO L78 Accepts]: Start accepts. Automaton has 30998 states and 35109 transitions. Word has length 313 [2018-07-24 11:54:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:53,395 INFO L471 AbstractCegarLoop]: Abstraction has 30998 states and 35109 transitions. [2018-07-24 11:54:53,396 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:54:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 30998 states and 35109 transitions. [2018-07-24 11:54:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-24 11:54:53,407 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:53,407 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:54:53,407 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:53,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1289316147, now seen corresponding path program 1 times [2018-07-24 11:54:53,408 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:53,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:53,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:53,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:53,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 11:54:54,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:54,153 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 11:54:54,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:54,167 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:54,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 11:54:54,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 11:54:55,270 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:55,271 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 11:54:55,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:55,287 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:55,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 11:54:55,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 11:54:56,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:54:56,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-07-24 11:54:56,247 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:54:56,248 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:54:56,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:54:56,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:54:56,249 INFO L87 Difference]: Start difference. First operand 30998 states and 35109 transitions. Second operand 9 states. [2018-07-24 11:55:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:11,361 INFO L93 Difference]: Finished difference Result 115522 states and 139103 transitions. [2018-07-24 11:55:11,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 11:55:11,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 400 [2018-07-24 11:55:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:11,603 INFO L225 Difference]: With dead ends: 115522 [2018-07-24 11:55:11,603 INFO L226 Difference]: Without dead ends: 84530 [2018-07-24 11:55:11,667 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1618 GetRequests, 1595 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:55:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84530 states. [2018-07-24 11:55:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84530 to 81799. [2018-07-24 11:55:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81799 states. [2018-07-24 11:55:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81799 states to 81799 states and 94996 transitions. [2018-07-24 11:55:13,091 INFO L78 Accepts]: Start accepts. Automaton has 81799 states and 94996 transitions. Word has length 400 [2018-07-24 11:55:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:13,092 INFO L471 AbstractCegarLoop]: Abstraction has 81799 states and 94996 transitions. [2018-07-24 11:55:13,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:55:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 81799 states and 94996 transitions. [2018-07-24 11:55:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-24 11:55:13,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:13,115 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:55:13,115 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1712913728, now seen corresponding path program 1 times [2018-07-24 11:55:13,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:13,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:13,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:13,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 124 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 11:55:13,566 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:13,566 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 11:55:13,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:13,574 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:55:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:13,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:55:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 11:55:13,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:55:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 124 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 11:55:14,615 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:14,616 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 11:55:14,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:14,633 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:55:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:14,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:55:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 11:55:15,061 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:55:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 124 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 11:55:15,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:55:15,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:55:15,239 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:55:15,239 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:55:15,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:55:15,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:55:15,240 INFO L87 Difference]: Start difference. First operand 81799 states and 94996 transitions. Second operand 9 states. [2018-07-24 11:55:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:30,446 INFO L93 Difference]: Finished difference Result 168161 states and 197877 transitions. [2018-07-24 11:55:30,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:55:30,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 407 [2018-07-24 11:55:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:30,694 INFO L225 Difference]: With dead ends: 168161 [2018-07-24 11:55:30,694 INFO L226 Difference]: Without dead ends: 87136 [2018-07-24 11:55:30,776 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1627 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:55:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87136 states. [2018-07-24 11:55:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87136 to 86287. [2018-07-24 11:55:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86287 states. [2018-07-24 11:55:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86287 states to 86287 states and 98289 transitions. [2018-07-24 11:55:31,848 INFO L78 Accepts]: Start accepts. Automaton has 86287 states and 98289 transitions. Word has length 407 [2018-07-24 11:55:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:31,848 INFO L471 AbstractCegarLoop]: Abstraction has 86287 states and 98289 transitions. [2018-07-24 11:55:31,848 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:55:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 86287 states and 98289 transitions. [2018-07-24 11:55:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-24 11:55:31,864 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:31,864 INFO L353 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:55:31,864 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:31,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1146589242, now seen corresponding path program 1 times [2018-07-24 11:55:31,865 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:31,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:31,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:31,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:31,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:32,889 WARN L169 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-07-24 11:55:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 196 proven. 331 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 11:55:34,238 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:34,238 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 11:55:34,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:34,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:55:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:34,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:55:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 399 proven. 11 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 11:55:34,964 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:55:35,407 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-07-24 11:55:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-07-24 11:55:36,463 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:36,464 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 11:55:36,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:36,483 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:55:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:36,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:55:37,114 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 23 [2018-07-24 11:55:50,142 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:55:50,144 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.pop(WrapperScript.java:106) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.UndoableWrapperScript.pop(UndoableWrapperScript.java:58) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:406) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 46 more [2018-07-24 11:55:50,150 INFO L168 Benchmark]: Toolchain (without parser) took 185672.68 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 960.4 MB. Max. memory is 7.1 GB. [2018-07-24 11:55:50,151 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:55:50,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2406.13 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:55:50,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 255.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:55:50,153 INFO L168 Benchmark]: Boogie Preprocessor took 935.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 906.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:55:50,154 INFO L168 Benchmark]: RCFGBuilder took 10017.34 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 167.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -167.1 MB). Peak memory consumption was 739.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:55:50,155 INFO L168 Benchmark]: TraceAbstraction took 172052.74 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -488.6 MB). Peak memory consumption was 933.8 MB. Max. memory is 7.1 GB. [2018-07-24 11:55:50,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2406.13 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 255.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 935.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 906.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10017.34 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 167.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -167.1 MB). Peak memory consumption was 739.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 172052.74 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -488.6 MB). Peak memory consumption was 933.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label48_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-55-50-176.csv Received shutdown request...