java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:44:45,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:44:45,069 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:44:45,081 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:44:45,081 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:44:45,082 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:44:45,083 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:44:45,085 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:44:45,087 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:44:45,088 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:44:45,089 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:44:45,089 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:44:45,090 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:44:45,091 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:44:45,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:44:45,093 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:44:45,094 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:44:45,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:44:45,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:44:45,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:44:45,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:44:45,102 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:44:45,104 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:44:45,105 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:44:45,105 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:44:45,106 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:44:45,107 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:44:45,108 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:44:45,109 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:44:45,110 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:44:45,110 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:44:45,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:44:45,112 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:44:45,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:44:45,115 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:44:45,116 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:44:45,116 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:44:45,144 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:44:45,144 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:44:45,145 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:44:45,145 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:44:45,145 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:44:45,146 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:44:45,146 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:44:45,147 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:44:45,147 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:44:45,147 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:44:45,147 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:44:45,148 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:44:45,148 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:44:45,149 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:44:45,149 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:44:45,149 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:44:45,149 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:44:45,150 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:44:45,150 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:44:45,151 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:44:45,151 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:44:45,151 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:44:45,152 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:44:45,152 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:44:45,152 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:44:45,152 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:44:45,152 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:44:45,153 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:44:45,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:44:45,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:44:45,153 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:44:45,153 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:44:45,153 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:44:45,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:44:45,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:44:45,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:44:45,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:44:45,255 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:44:45,256 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23_true-unreach-call.c [2018-09-10 11:44:45,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980027c3e/f9f4bb478268482198356f3aae878c28/FLAG8cb39063b [2018-09-10 11:44:46,081 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:44:46,082 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label23_true-unreach-call.c [2018-09-10 11:44:46,123 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980027c3e/f9f4bb478268482198356f3aae878c28/FLAG8cb39063b [2018-09-10 11:44:46,145 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980027c3e/f9f4bb478268482198356f3aae878c28 [2018-09-10 11:44:46,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:44:46,162 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:44:46,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:44:46,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:44:46,170 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:44:46,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:44:46" (1/1) ... [2018-09-10 11:44:46,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7f4f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:46, skipping insertion in model container [2018-09-10 11:44:46,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:44:46" (1/1) ... [2018-09-10 11:44:46,501 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:44:47,604 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:44:47,623 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:44:48,384 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:44:48,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48 WrapperNode [2018-09-10 11:44:48,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:44:48,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:44:48,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:44:48,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:44:48,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:48,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:48,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:44:48,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:44:48,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:44:48,868 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:44:49,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... [2018-09-10 11:44:49,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:44:49,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:44:49,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:44:49,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:44:49,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:44:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:44:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:44:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:44:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:44:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:44:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:44:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:44:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:44:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:44:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:44:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:44:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:44:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:44:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:45:00,611 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:45:00,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:45:00 BoogieIcfgContainer [2018-09-10 11:45:00,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:45:00,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:45:00,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:45:00,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:45:00,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:44:46" (1/3) ... [2018-09-10 11:45:00,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36051243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:45:00, skipping insertion in model container [2018-09-10 11:45:00,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:44:48" (2/3) ... [2018-09-10 11:45:00,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36051243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:45:00, skipping insertion in model container [2018-09-10 11:45:00,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:45:00" (3/3) ... [2018-09-10 11:45:00,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label23_true-unreach-call.c [2018-09-10 11:45:00,631 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:45:00,642 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:45:00,710 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:45:00,711 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:45:00,711 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:45:00,711 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:45:00,711 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:45:00,711 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:45:00,711 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:45:00,712 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:45:00,712 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:45:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:45:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-10 11:45:00,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:00,775 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:00,776 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:00,782 INFO L82 PathProgramCache]: Analyzing trace with hash -212556364, now seen corresponding path program 1 times [2018-09-10 11:45:00,784 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:00,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:00,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:00,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:00,839 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:01,218 WARN L175 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:01,243 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:45:01,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:45:01,244 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:01,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:45:01,266 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:45:01,267 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:45:01,269 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:45:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:08,610 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:45:08,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:45:08,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-09-10 11:45:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:08,645 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:45:08,645 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:45:08,657 INFO L604 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 [2018-09-10 11:45:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:45:08,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:45:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:45:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-10 11:45:08,822 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 42 [2018-09-10 11:45:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:08,823 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-10 11:45:08,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:45:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-10 11:45:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-10 11:45:08,831 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:08,831 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:08,832 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:08,832 INFO L82 PathProgramCache]: Analyzing trace with hash -840500262, now seen corresponding path program 1 times [2018-09-10 11:45:08,833 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:08,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:08,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:08,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:08,834 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:09,189 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:45:09,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:45:09,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:09,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:45:09,192 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:45:09,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:09,193 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-09-10 11:45:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:27,778 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-09-10 11:45:27,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:45:27,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-09-10 11:45:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:27,819 INFO L225 Difference]: With dead ends: 6329 [2018-09-10 11:45:27,819 INFO L226 Difference]: Without dead ends: 4731 [2018-09-10 11:45:27,828 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:45:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-09-10 11:45:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-09-10 11:45:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-09-10 11:45:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-09-10 11:45:27,978 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 116 [2018-09-10 11:45:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:27,979 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-09-10 11:45:27,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:45:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-09-10 11:45:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-10 11:45:27,992 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:27,992 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:27,993 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:27,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1310916662, now seen corresponding path program 1 times [2018-09-10 11:45:27,993 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:27,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:27,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:27,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:27,996 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:28,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:28,746 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:45:28,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:28,766 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:28,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:29,117 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:29,493 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:45:29,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-10 11:45:29,494 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:29,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:45:29,494 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:45:29,495 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:45:29,495 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 3 states. [2018-09-10 11:45:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:36,411 INFO L93 Difference]: Finished difference Result 9398 states and 15166 transitions. [2018-09-10 11:45:36,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:45:36,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2018-09-10 11:45:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:36,441 INFO L225 Difference]: With dead ends: 9398 [2018-09-10 11:45:36,441 INFO L226 Difference]: Without dead ends: 4702 [2018-09-10 11:45:36,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:45:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2018-09-10 11:45:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4702. [2018-09-10 11:45:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-09-10 11:45:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 6726 transitions. [2018-09-10 11:45:36,582 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 6726 transitions. Word has length 118 [2018-09-10 11:45:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:36,583 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 6726 transitions. [2018-09-10 11:45:36,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:45:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 6726 transitions. [2018-09-10 11:45:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-09-10 11:45:36,589 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:36,589 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:36,589 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1656507837, now seen corresponding path program 1 times [2018-09-10 11:45:36,590 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:36,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:36,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:36,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:36,591 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:36,898 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:37,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:45:37,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:45:37,176 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:37,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:45:37,177 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:45:37,177 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:37,178 INFO L87 Difference]: Start difference. First operand 4702 states and 6726 transitions. Second operand 6 states. [2018-09-10 11:45:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:49,482 INFO L93 Difference]: Finished difference Result 15735 states and 23214 transitions. [2018-09-10 11:45:49,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:45:49,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-09-10 11:45:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:49,530 INFO L225 Difference]: With dead ends: 15735 [2018-09-10 11:45:49,531 INFO L226 Difference]: Without dead ends: 11039 [2018-09-10 11:45:49,551 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:45:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2018-09-10 11:45:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 10994. [2018-09-10 11:45:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10994 states. [2018-09-10 11:45:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10994 states to 10994 states and 15567 transitions. [2018-09-10 11:45:49,809 INFO L78 Accepts]: Start accepts. Automaton has 10994 states and 15567 transitions. Word has length 151 [2018-09-10 11:45:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:49,810 INFO L480 AbstractCegarLoop]: Abstraction has 10994 states and 15567 transitions. [2018-09-10 11:45:49,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:45:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 10994 states and 15567 transitions. [2018-09-10 11:45:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-10 11:45:49,815 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:49,815 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:49,815 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:49,816 INFO L82 PathProgramCache]: Analyzing trace with hash 541264485, now seen corresponding path program 1 times [2018-09-10 11:45:49,816 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:49,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:49,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:49,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:49,817 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:50,081 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:50,276 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:45:50,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:45:50,277 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:50,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:45:50,278 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:45:50,278 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:50,278 INFO L87 Difference]: Start difference. First operand 10994 states and 15567 transitions. Second operand 6 states. [2018-09-10 11:45:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:58,616 INFO L93 Difference]: Finished difference Result 25600 states and 37246 transitions. [2018-09-10 11:45:58,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:45:58,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-09-10 11:45:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:58,676 INFO L225 Difference]: With dead ends: 25600 [2018-09-10 11:45:58,676 INFO L226 Difference]: Without dead ends: 14612 [2018-09-10 11:45:58,701 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:45:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14612 states. [2018-09-10 11:45:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14612 to 14464. [2018-09-10 11:45:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14464 states. [2018-09-10 11:45:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14464 states to 14464 states and 19879 transitions. [2018-09-10 11:45:59,009 INFO L78 Accepts]: Start accepts. Automaton has 14464 states and 19879 transitions. Word has length 163 [2018-09-10 11:45:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:59,009 INFO L480 AbstractCegarLoop]: Abstraction has 14464 states and 19879 transitions. [2018-09-10 11:45:59,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:45:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 14464 states and 19879 transitions. [2018-09-10 11:45:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-10 11:45:59,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:59,023 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:59,023 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash -572409247, now seen corresponding path program 1 times [2018-09-10 11:45:59,024 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:59,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:59,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:59,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:59,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 113 proven. 148 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 11:45:59,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:59,554 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:45:59,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:59,570 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:59,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-10 11:45:59,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 184 proven. 81 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:46:00,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:00,318 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:46:00,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:00,336 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:00,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-10 11:46:00,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 184 proven. 81 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:46:01,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:46:01,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-09-10 11:46:01,320 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:46:01,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 11:46:01,322 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 11:46:01,322 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:46:01,322 INFO L87 Difference]: Start difference. First operand 14464 states and 19879 transitions. Second operand 8 states. [2018-09-10 11:46:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:23,115 INFO L93 Difference]: Finished difference Result 44848 states and 63944 transitions. [2018-09-10 11:46:23,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-10 11:46:23,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 295 [2018-09-10 11:46:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:23,202 INFO L225 Difference]: With dead ends: 44848 [2018-09-10 11:46:23,203 INFO L226 Difference]: Without dead ends: 26294 [2018-09-10 11:46:23,249 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1190 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2018-09-10 11:46:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26294 states. [2018-09-10 11:46:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26294 to 25003. [2018-09-10 11:46:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25003 states. [2018-09-10 11:46:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25003 states to 25003 states and 30416 transitions. [2018-09-10 11:46:23,736 INFO L78 Accepts]: Start accepts. Automaton has 25003 states and 30416 transitions. Word has length 295 [2018-09-10 11:46:23,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:23,737 INFO L480 AbstractCegarLoop]: Abstraction has 25003 states and 30416 transitions. [2018-09-10 11:46:23,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 11:46:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 25003 states and 30416 transitions. [2018-09-10 11:46:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-10 11:46:23,757 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:23,758 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:23,758 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -806411790, now seen corresponding path program 1 times [2018-09-10 11:46:23,759 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:23,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:23,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:23,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:23,760 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:24,139 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:46:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:46:24,951 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:24,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:46:24,951 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:24,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:46:24,952 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:46:24,953 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:46:24,953 INFO L87 Difference]: Start difference. First operand 25003 states and 30416 transitions. Second operand 6 states. [2018-09-10 11:46:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:36,235 INFO L93 Difference]: Finished difference Result 64278 states and 81487 transitions. [2018-09-10 11:46:36,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:46:36,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 328 [2018-09-10 11:46:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:36,353 INFO L225 Difference]: With dead ends: 64278 [2018-09-10 11:46:36,353 INFO L226 Difference]: Without dead ends: 39281 [2018-09-10 11:46:36,400 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:46:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39281 states. [2018-09-10 11:46:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39281 to 38336. [2018-09-10 11:46:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38336 states. [2018-09-10 11:46:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38336 states to 38336 states and 46942 transitions. [2018-09-10 11:46:37,365 INFO L78 Accepts]: Start accepts. Automaton has 38336 states and 46942 transitions. Word has length 328 [2018-09-10 11:46:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:37,365 INFO L480 AbstractCegarLoop]: Abstraction has 38336 states and 46942 transitions. [2018-09-10 11:46:37,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:46:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 38336 states and 46942 transitions. [2018-09-10 11:46:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-09-10 11:46:37,390 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:37,390 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:37,390 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1007910899, now seen corresponding path program 1 times [2018-09-10 11:46:37,391 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:37,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:37,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:37,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:37,392 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 105 proven. 159 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:46:37,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:37,847 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:46:37,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:37,857 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:37,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-10 11:46:38,215 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:38,478 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:46:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 105 proven. 159 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:46:38,762 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:46:38,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:46:38,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:38,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:46:38,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:46:38,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:46:38,763 INFO L87 Difference]: Start difference. First operand 38336 states and 46942 transitions. Second operand 5 states. [2018-09-10 11:46:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:50,700 INFO L93 Difference]: Finished difference Result 113700 states and 143950 transitions. [2018-09-10 11:46:50,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:46:50,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2018-09-10 11:46:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:50,898 INFO L225 Difference]: With dead ends: 113700 [2018-09-10 11:46:50,899 INFO L226 Difference]: Without dead ends: 75370 [2018-09-10 11:46:50,962 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:46:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75370 states. [2018-09-10 11:46:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75370 to 73606. [2018-09-10 11:46:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73606 states. [2018-09-10 11:46:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73606 states to 73606 states and 88334 transitions. [2018-09-10 11:46:52,173 INFO L78 Accepts]: Start accepts. Automaton has 73606 states and 88334 transitions. Word has length 333 [2018-09-10 11:46:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:52,174 INFO L480 AbstractCegarLoop]: Abstraction has 73606 states and 88334 transitions. [2018-09-10 11:46:52,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:46:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 73606 states and 88334 transitions. [2018-09-10 11:46:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-09-10 11:46:52,198 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:52,198 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:52,198 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash 981678586, now seen corresponding path program 1 times [2018-09-10 11:46:52,199 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:52,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:52,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:52,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:52,200 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:52,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:52,532 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:46:52,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:52,541 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:52,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:52,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:52,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:52,966 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:46:52,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:52,985 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:53,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:54,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:54,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:46:54,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:46:54,921 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:46:54,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:46:54,923 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:46:54,923 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:46:54,923 INFO L87 Difference]: Start difference. First operand 73606 states and 88334 transitions. Second operand 9 states. [2018-09-10 11:47:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:09,840 INFO L93 Difference]: Finished difference Result 160420 states and 199309 transitions. [2018-09-10 11:47:09,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 11:47:09,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 360 [2018-09-10 11:47:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:10,085 INFO L225 Difference]: With dead ends: 160420 [2018-09-10 11:47:10,086 INFO L226 Difference]: Without dead ends: 85978 [2018-09-10 11:47:10,194 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1436 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:47:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85978 states. [2018-09-10 11:47:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85978 to 85711. [2018-09-10 11:47:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85711 states. [2018-09-10 11:47:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85711 states to 85711 states and 103425 transitions. [2018-09-10 11:47:11,441 INFO L78 Accepts]: Start accepts. Automaton has 85711 states and 103425 transitions. Word has length 360 [2018-09-10 11:47:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:11,442 INFO L480 AbstractCegarLoop]: Abstraction has 85711 states and 103425 transitions. [2018-09-10 11:47:11,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:47:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 85711 states and 103425 transitions. [2018-09-10 11:47:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-09-10 11:47:11,504 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:11,504 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:11,505 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 208497827, now seen corresponding path program 1 times [2018-09-10 11:47:11,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:11,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:11,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:11,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:11,506 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:11,856 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:47:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 70 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:47:12,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:12,459 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:47:12,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:12,468 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:13,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-10 11:47:13,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 70 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:47:13,731 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:47:13,731 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:47:13,732 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:13,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:47:13,733 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:47:13,733 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:47:13,733 INFO L87 Difference]: Start difference. First operand 85711 states and 103425 transitions. Second operand 5 states. [2018-09-10 11:47:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:26,261 INFO L93 Difference]: Finished difference Result 212977 states and 271882 transitions. [2018-09-10 11:47:26,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:47:26,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 481 [2018-09-10 11:47:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:26,690 INFO L225 Difference]: With dead ends: 212977 [2018-09-10 11:47:26,690 INFO L226 Difference]: Without dead ends: 127277 [2018-09-10 11:47:26,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 956 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:47:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127277 states. [2018-09-10 11:47:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127277 to 126623. [2018-09-10 11:47:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126623 states. [2018-09-10 11:47:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126623 states to 126623 states and 154178 transitions. [2018-09-10 11:47:28,555 INFO L78 Accepts]: Start accepts. Automaton has 126623 states and 154178 transitions. Word has length 481 [2018-09-10 11:47:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:28,555 INFO L480 AbstractCegarLoop]: Abstraction has 126623 states and 154178 transitions. [2018-09-10 11:47:28,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:47:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 126623 states and 154178 transitions. [2018-09-10 11:47:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-09-10 11:47:28,646 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:28,647 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:28,647 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1722443711, now seen corresponding path program 1 times [2018-09-10 11:47:28,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:28,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:28,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:28,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:28,649 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:29,004 WARN L175 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:47:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 111 proven. 224 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:47:29,309 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:29,309 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:47:29,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:29,951 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:30,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-09-10 11:47:30,377 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 187 proven. 78 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-10 11:47:30,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:30,718 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:47:30,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:30,736 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:31,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-10 11:47:31,574 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 113 proven. 215 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 11:47:31,973 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:47:31,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-10 11:47:31,974 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:31,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:47:31,975 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:47:31,975 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:47:31,975 INFO L87 Difference]: Start difference. First operand 126623 states and 154178 transitions. Second operand 5 states. [2018-09-10 11:47:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:40,624 INFO L93 Difference]: Finished difference Result 286400 states and 357863 transitions. [2018-09-10 11:47:40,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:47:40,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 553 [2018-09-10 11:47:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:40,960 INFO L225 Difference]: With dead ends: 286400 [2018-09-10 11:47:40,961 INFO L226 Difference]: Without dead ends: 149856 [2018-09-10 11:47:41,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2220 GetRequests, 2201 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:47:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149856 states. [2018-09-10 11:47:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149856 to 144216. [2018-09-10 11:47:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144216 states. [2018-09-10 11:47:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144216 states to 144216 states and 171540 transitions. [2018-09-10 11:47:43,671 INFO L78 Accepts]: Start accepts. Automaton has 144216 states and 171540 transitions. Word has length 553 [2018-09-10 11:47:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:43,672 INFO L480 AbstractCegarLoop]: Abstraction has 144216 states and 171540 transitions. [2018-09-10 11:47:43,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:47:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 144216 states and 171540 transitions. [2018-09-10 11:47:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-09-10 11:47:43,755 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:43,756 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:43,756 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1847987314, now seen corresponding path program 1 times [2018-09-10 11:47:43,757 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:43,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:43,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:43,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:43,758 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:44,527 WARN L175 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-10 11:47:45,101 WARN L175 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 15 [2018-09-10 11:47:45,775 WARN L175 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-10 11:47:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 360 proven. 14 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:47:48,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:48,829 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:47:48,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:48,837 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:49,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:47:49,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:47:50,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:50,548 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:47:50,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:50,564 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:51,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:47:51,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:47:51,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:47:51,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5, 5, 5] total 22 [2018-09-10 11:47:51,637 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:47:51,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-10 11:47:51,638 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-10 11:47:51,639 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2018-09-10 11:47:51,639 INFO L87 Difference]: Start difference. First operand 144216 states and 171540 transitions. Second operand 20 states. [2018-09-10 11:47:55,999 WARN L175 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-09-10 11:48:13,610 WARN L175 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-09-10 11:48:25,753 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-09-10 11:48:33,496 WARN L175 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-09-10 11:48:35,077 WARN L175 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 48 Received shutdown request... [2018-09-10 11:48:36,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-10 11:48:36,090 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:48:36,095 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:48:36,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:48:36 BoogieIcfgContainer [2018-09-10 11:48:36,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:48:36,097 INFO L168 Benchmark]: Toolchain (without parser) took 229938.18 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 849.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:48:36,099 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:48:36,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2478.04 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:48:36,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 226.07 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. [2018-09-10 11:48:36,101 INFO L168 Benchmark]: Boogie Preprocessor took 913.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 885.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:48:36,102 INFO L168 Benchmark]: RCFGBuilder took 10830.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -96.9 MB). Peak memory consumption was 705.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:48:36,103 INFO L168 Benchmark]: TraceAbstraction took 215482.88 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -400.1 MB). Peak memory consumption was 788.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:48:36,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2478.04 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 226.07 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 913.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 885.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10830.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -96.9 MB). Peak memory consumption was 705.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215482.88 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -400.1 MB). Peak memory consumption was 788.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (144216states) and FLOYD_HOARE automaton (currently 121 states, 20 states before enhancement), while ReachableStatesComputation was computing reachable states (102604 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 215.3s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 181.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3021 SDtfs, 60879 SDslu, 3147 SDs, 0 SdLazy, 96048 SolverSat, 20483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 140.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9439 GetRequests, 9163 SyntacticMatches, 31 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6993 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144216occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 10783 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 8070 NumberOfCodeBlocks, 8070 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 12572 ConstructedInterpolants, 0 QuantifiedInterpolants, 21833120 SizeOfPredicates, 10 NumberOfNonLiveVariables, 7249 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 34 InterpolantComputations, 10 PerfectInterpolantSequences, 8378/9873 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-48-36-123.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label23_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-48-36-123.csv Completed graceful shutdown