java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:11:25,999 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:11:26,001 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:11:26,021 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:11:26,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:11:26,024 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:11:26,026 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:11:26,030 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:11:26,039 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:11:26,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:11:26,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:11:26,045 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:11:26,046 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:11:26,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:11:26,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:11:26,053 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:11:26,054 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:11:26,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:11:26,060 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:11:26,068 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:11:26,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:11:26,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:11:26,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:11:26,080 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:11:26,080 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:11:26,081 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:11:26,083 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:11:26,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:11:26,085 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:11:26,088 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:11:26,089 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:11:26,090 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:11:26,090 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:11:26,090 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:11:26,093 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:11:26,094 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:11:26,094 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:11:26,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:11:26,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:11:26,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:11:26,127 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:11:26,128 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:11:26,128 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:11:26,128 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:11:26,129 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:11:26,129 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:11:26,129 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:11:26,129 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:11:26,131 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:11:26,131 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:11:26,131 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:11:26,132 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:11:26,132 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:11:26,132 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:11:26,134 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:11:26,134 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:11:26,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:11:26,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:11:26,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:11:26,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:11:26,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:11:26,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:11:26,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:11:26,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:11:26,137 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:11:26,137 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:11:26,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:11:26,138 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:11:26,138 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:11:26,138 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:11:26,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:11:26,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:11:26,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:11:26,236 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:11:26,237 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:11:26,238 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33_true-unreach-call.c [2018-07-24 14:11:26,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802195afb/95d2e2f9274a4ca482f736d723a853f3/FLAG58778b685 [2018-07-24 14:11:27,025 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:11:27,026 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label33_true-unreach-call.c [2018-07-24 14:11:27,056 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802195afb/95d2e2f9274a4ca482f736d723a853f3/FLAG58778b685 [2018-07-24 14:11:27,072 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802195afb/95d2e2f9274a4ca482f736d723a853f3 [2018-07-24 14:11:27,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:11:27,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:11:27,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:11:27,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:11:27,094 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:11:27,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:27,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b48385f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27, skipping insertion in model container [2018-07-24 14:11:27,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:27,439 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:11:28,548 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:11:28,568 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:11:29,424 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:11:29,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29 WrapperNode [2018-07-24 14:11:29,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:11:29,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:11:29,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:11:29,654 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:11:29,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:29,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:29,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:11:29,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:11:29,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:11:29,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:11:30,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... [2018-07-24 14:11:30,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:11:30,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:11:30,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:11:30,757 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:11:30,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:11:30,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:11:30,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:11:30,839 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 [2018-07-24 14:11:30,839 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 [2018-07-24 14:11:30,839 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 [2018-07-24 14:11:30,840 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 [2018-07-24 14:11:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:11:30,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:11:30,840 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 [2018-07-24 14:11:30,840 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 [2018-07-24 14:11:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:11:30,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:11:30,841 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 [2018-07-24 14:11:30,842 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 [2018-07-24 14:11:42,987 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:11:42,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:11:42 BoogieIcfgContainer [2018-07-24 14:11:42,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:11:42,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:11:42,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:11:42,995 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:11:42,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:11:27" (1/3) ... [2018-07-24 14:11:42,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545caa46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:11:42, skipping insertion in model container [2018-07-24 14:11:42,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:29" (2/3) ... [2018-07-24 14:11:42,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545caa46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:11:42, skipping insertion in model container [2018-07-24 14:11:42,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:11:42" (3/3) ... [2018-07-24 14:11:43,000 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33_true-unreach-call.c [2018-07-24 14:11:43,008 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:11:43,017 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:11:43,085 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:11:43,086 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:11:43,086 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:11:43,087 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:11:43,087 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:11:43,087 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:11:43,087 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:11:43,087 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:11:43,087 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:11:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:11:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-24 14:11:43,146 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:43,147 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:11:43,148 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:11:43,153 INFO L82 PathProgramCache]: Analyzing trace with hash -314338996, now seen corresponding path program 1 times [2018-07-24 14:11:43,156 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:43,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:43,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:43,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:43,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:43,690 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-07-24 14:11:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:43,713 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:43,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:11:43,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:43,720 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:11:43,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:11:43,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:11:43,739 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-07-24 14:11:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:56,426 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-07-24 14:11:56,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:11:56,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-07-24 14:11:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:56,485 INFO L225 Difference]: With dead ends: 3234 [2018-07-24 14:11:56,485 INFO L226 Difference]: Without dead ends: 2388 [2018-07-24 14:11:56,503 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:11:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-07-24 14:11:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-07-24 14:11:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-07-24 14:11:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-07-24 14:11:56,679 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 56 [2018-07-24 14:11:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:56,680 INFO L471 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-07-24 14:11:56,680 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:11:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-07-24 14:11:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-24 14:11:56,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:56,692 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:11:56,692 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:11:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash 6203326, now seen corresponding path program 1 times [2018-07-24 14:11:56,693 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:56,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:56,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:56,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:56,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:57,088 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:57,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:11:57,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:57,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:11:57,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:11:57,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:11:57,091 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-07-24 14:12:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:12,115 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-07-24 14:12:12,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:12:12,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-07-24 14:12:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:12,164 INFO L225 Difference]: With dead ends: 9453 [2018-07-24 14:12:12,164 INFO L226 Difference]: Without dead ends: 7071 [2018-07-24 14:12:12,178 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:12:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-07-24 14:12:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-07-24 14:12:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-07-24 14:12:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-07-24 14:12:12,398 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 156 [2018-07-24 14:12:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:12,399 INFO L471 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-07-24 14:12:12,399 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:12:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-07-24 14:12:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-24 14:12:12,420 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:12,421 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:12,421 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:12,422 INFO L82 PathProgramCache]: Analyzing trace with hash -534750278, now seen corresponding path program 1 times [2018-07-24 14:12:12,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:12,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:12,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:12,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:12,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:12,777 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:13,018 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:13,018 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:12:13,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:13,035 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:13,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:13,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:13,894 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:12:13,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 14:12:13,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:13,895 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:12:13,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:12:13,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:12:13,896 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 3 states. [2018-07-24 14:12:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:24,500 INFO L93 Difference]: Finished difference Result 20925 states and 32084 transitions. [2018-07-24 14:12:24,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:12:24,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2018-07-24 14:12:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:24,582 INFO L225 Difference]: With dead ends: 20925 [2018-07-24 14:12:24,582 INFO L226 Difference]: Without dead ends: 13908 [2018-07-24 14:12:24,616 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 411 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:12:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13908 states. [2018-07-24 14:12:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13908 to 13908. [2018-07-24 14:12:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13908 states. [2018-07-24 14:12:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13908 states to 13908 states and 20325 transitions. [2018-07-24 14:12:24,978 INFO L78 Accepts]: Start accepts. Automaton has 13908 states and 20325 transitions. Word has length 206 [2018-07-24 14:12:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:24,979 INFO L471 AbstractCegarLoop]: Abstraction has 13908 states and 20325 transitions. [2018-07-24 14:12:24,979 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:12:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 13908 states and 20325 transitions. [2018-07-24 14:12:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 14:12:24,990 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:24,991 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:12:24,991 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1088325740, now seen corresponding path program 1 times [2018-07-24 14:12:24,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:24,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:24,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:24,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:24,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 98 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:25,444 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:25,444 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:12:25,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:25,460 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:25,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:12:26,086 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:26,390 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:12:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 98 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Forcibly destroying the process [2018-07-24 14:12:27,262 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:12:27,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:12:27,263 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:27,264 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:12:27,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:12:27,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:12:27,265 INFO L87 Difference]: Start difference. First operand 13908 states and 20325 transitions. Second operand 5 states. [2018-07-24 14:12:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:36,335 INFO L93 Difference]: Finished difference Result 37453 states and 58490 transitions. [2018-07-24 14:12:36,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:12:36,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-07-24 14:12:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:36,463 INFO L225 Difference]: With dead ends: 37453 [2018-07-24 14:12:36,463 INFO L226 Difference]: Without dead ends: 23551 [2018-07-24 14:12:36,519 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23551 states. [2018-07-24 14:12:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23551 to 23466. [2018-07-24 14:12:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23466 states. [2018-07-24 14:12:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23466 states to 23466 states and 33014 transitions. [2018-07-24 14:12:37,410 INFO L78 Accepts]: Start accepts. Automaton has 23466 states and 33014 transitions. Word has length 210 [2018-07-24 14:12:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:37,411 INFO L471 AbstractCegarLoop]: Abstraction has 23466 states and 33014 transitions. [2018-07-24 14:12:37,411 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:12:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 23466 states and 33014 transitions. [2018-07-24 14:12:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-24 14:12:37,434 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:37,435 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:12:37,435 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:37,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1492873173, now seen corresponding path program 1 times [2018-07-24 14:12:37,437 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:37,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:37,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:37,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:37,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:37,765 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:37,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:12:37,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:37,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:37,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:37,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:37,766 INFO L87 Difference]: Start difference. First operand 23466 states and 33014 transitions. Second operand 4 states. [2018-07-24 14:12:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:47,364 INFO L93 Difference]: Finished difference Result 56258 states and 80977 transitions. [2018-07-24 14:12:47,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:12:47,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2018-07-24 14:12:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:47,495 INFO L225 Difference]: With dead ends: 56258 [2018-07-24 14:12:47,495 INFO L226 Difference]: Without dead ends: 32798 [2018-07-24 14:12:47,562 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32798 states. [2018-07-24 14:12:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32798 to 32796. [2018-07-24 14:12:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32796 states. [2018-07-24 14:12:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32796 states to 32796 states and 42321 transitions. [2018-07-24 14:12:48,529 INFO L78 Accepts]: Start accepts. Automaton has 32796 states and 42321 transitions. Word has length 279 [2018-07-24 14:12:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:48,531 INFO L471 AbstractCegarLoop]: Abstraction has 32796 states and 42321 transitions. [2018-07-24 14:12:48,531 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:12:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 32796 states and 42321 transitions. [2018-07-24 14:12:48,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-24 14:12:48,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:48,569 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:12:48,569 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:48,570 INFO L82 PathProgramCache]: Analyzing trace with hash -517426057, now seen corresponding path program 1 times [2018-07-24 14:12:48,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:48,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:48,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:48,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:48,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:48,871 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:49,333 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:49,333 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:12:49,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:49,347 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:49,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:12:49,875 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:50,284 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:12:50,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:12:50,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:50,286 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:12:50,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:12:50,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:12:50,286 INFO L87 Difference]: Start difference. First operand 32796 states and 42321 transitions. Second operand 5 states. [2018-07-24 14:13:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:01,520 INFO L93 Difference]: Finished difference Result 91127 states and 120589 transitions. [2018-07-24 14:13:01,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:13:01,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2018-07-24 14:13:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:01,737 INFO L225 Difference]: With dead ends: 91127 [2018-07-24 14:13:01,737 INFO L226 Difference]: Without dead ends: 58337 [2018-07-24 14:13:01,838 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 636 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:13:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58337 states. [2018-07-24 14:13:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58337 to 58154. [2018-07-24 14:13:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58154 states. [2018-07-24 14:13:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58154 states to 58154 states and 71157 transitions. [2018-07-24 14:13:02,922 INFO L78 Accepts]: Start accepts. Automaton has 58154 states and 71157 transitions. Word has length 321 [2018-07-24 14:13:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:02,923 INFO L471 AbstractCegarLoop]: Abstraction has 58154 states and 71157 transitions. [2018-07-24 14:13:02,923 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 58154 states and 71157 transitions. [2018-07-24 14:13:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-24 14:13:03,001 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:03,001 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:03,002 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:13:03,002 INFO L82 PathProgramCache]: Analyzing trace with hash 577984987, now seen corresponding path program 1 times [2018-07-24 14:13:03,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:03,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:03,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:03,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:03,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 9 proven. 92 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 14:13:03,891 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:03,891 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:03,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:03,901 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:04,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:13:04,833 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:05,064 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-07-24 14:13:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 98 proven. 144 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:05,810 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:13:05,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 14:13:05,810 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:05,811 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:05,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:05,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:13:05,812 INFO L87 Difference]: Start difference. First operand 58154 states and 71157 transitions. Second operand 5 states. [2018-07-24 14:13:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:16,474 INFO L93 Difference]: Finished difference Result 126658 states and 156705 transitions. [2018-07-24 14:13:16,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 14:13:16,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383 [2018-07-24 14:13:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:16,642 INFO L225 Difference]: With dead ends: 126658 [2018-07-24 14:13:16,642 INFO L226 Difference]: Without dead ends: 68510 [2018-07-24 14:13:16,728 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 764 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:13:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68510 states. [2018-07-24 14:13:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68510 to 68398. [2018-07-24 14:13:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68398 states. [2018-07-24 14:13:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68398 states to 68398 states and 84289 transitions. [2018-07-24 14:13:17,675 INFO L78 Accepts]: Start accepts. Automaton has 68398 states and 84289 transitions. Word has length 383 [2018-07-24 14:13:17,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:17,675 INFO L471 AbstractCegarLoop]: Abstraction has 68398 states and 84289 transitions. [2018-07-24 14:13:17,675 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 68398 states and 84289 transitions. [2018-07-24 14:13:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-07-24 14:13:17,733 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:17,734 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:17,734 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:13:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash -183705223, now seen corresponding path program 1 times [2018-07-24 14:13:17,735 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:17,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:17,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:17,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:17,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:18,283 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 14:13:18,471 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 14:13:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 226 proven. 217 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:19,318 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:19,318 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:13:19,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:19,326 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:19,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:19,863 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 14:13:20,175 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 14:13:20,487 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 14:13:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 359 proven. 39 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:13:21,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 157 proven. 286 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:22,260 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:22,260 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:13:22,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:22,278 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:22,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 359 proven. 39 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:13:22,989 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 157 proven. 286 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:24,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:13:24,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 9] total 21 [2018-07-24 14:13:24,304 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:13:24,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:13:24,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:13:24,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:13:24,306 INFO L87 Difference]: Start difference. First operand 68398 states and 84289 transitions. Second operand 16 states. [2018-07-24 14:14:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:15,910 INFO L93 Difference]: Finished difference Result 173433 states and 212843 transitions. [2018-07-24 14:14:15,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 14:14:15,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 459 [2018-07-24 14:14:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:16,178 INFO L225 Difference]: With dead ends: 173433 [2018-07-24 14:14:16,179 INFO L226 Difference]: Without dead ends: 105041 [2018-07-24 14:14:16,269 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1913 GetRequests, 1855 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=709, Invalid=2153, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 14:14:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105041 states. [2018-07-24 14:14:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105041 to 104737. [2018-07-24 14:14:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104737 states. [2018-07-24 14:14:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104737 states to 104737 states and 126483 transitions. [2018-07-24 14:14:18,024 INFO L78 Accepts]: Start accepts. Automaton has 104737 states and 126483 transitions. Word has length 459 [2018-07-24 14:14:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:18,025 INFO L471 AbstractCegarLoop]: Abstraction has 104737 states and 126483 transitions. [2018-07-24 14:14:18,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:14:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 104737 states and 126483 transitions. [2018-07-24 14:14:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-07-24 14:14:18,072 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:18,072 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:14:18,072 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:18,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1265494626, now seen corresponding path program 1 times [2018-07-24 14:14:18,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:18,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:18,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:18,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:18,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 240 proven. 89 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 14:14:18,508 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:18,509 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:14:18,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:18,518 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:18,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:14:19,365 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 240 proven. 89 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 14:14:19,611 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:19,611 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:14:19,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:19,629 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:19,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 14:14:20,114 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 240 proven. 89 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 14:14:20,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:14:20,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 14 [2018-07-24 14:14:20,302 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:14:20,303 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:14:20,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:14:20,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:14:20,304 INFO L87 Difference]: Start difference. First operand 104737 states and 126483 transitions. Second operand 9 states. [2018-07-24 14:14:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:39,780 INFO L93 Difference]: Finished difference Result 284516 states and 384893 transitions. [2018-07-24 14:14:39,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:14:39,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 470 [2018-07-24 14:14:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:40,576 INFO L225 Difference]: With dead ends: 284516 [2018-07-24 14:14:40,576 INFO L226 Difference]: Without dead ends: 179835 [2018-07-24 14:14:41,614 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1896 GetRequests, 1876 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2018-07-24 14:14:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179835 states. [2018-07-24 14:14:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179835 to 179315. [2018-07-24 14:14:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179315 states. [2018-07-24 14:14:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179315 states to 179315 states and 235064 transitions. [2018-07-24 14:14:45,819 INFO L78 Accepts]: Start accepts. Automaton has 179315 states and 235064 transitions. Word has length 470 [2018-07-24 14:14:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:45,820 INFO L471 AbstractCegarLoop]: Abstraction has 179315 states and 235064 transitions. [2018-07-24 14:14:45,821 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:14:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 179315 states and 235064 transitions. [2018-07-24 14:14:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-07-24 14:14:45,878 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:45,878 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:14:45,879 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash -984117162, now seen corresponding path program 1 times [2018-07-24 14:14:45,879 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:45,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:45,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:45,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:45,880 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:14:46,347 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:46,347 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:14:46,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:46,356 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:46,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:14:46,683 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:14:46,942 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:46,942 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:14:46,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:46,957 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:47,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:14:47,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:14:48,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:14:48,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:14:48,574 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:14:48,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:14:48,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:14:48,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:14:48,576 INFO L87 Difference]: Start difference. First operand 179315 states and 235064 transitions. Second operand 9 states. [2018-07-24 14:15:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:10,771 INFO L93 Difference]: Finished difference Result 402566 states and 607350 transitions. [2018-07-24 14:15:10,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-24 14:15:10,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 474 [2018-07-24 14:15:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:11,936 INFO L225 Difference]: With dead ends: 402566 [2018-07-24 14:15:11,936 INFO L226 Difference]: Without dead ends: 223317 [2018-07-24 14:15:12,412 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1920 GetRequests, 1896 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:15:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223317 states. Received shutdown request... [2018-07-24 14:15:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223317 to 222376. [2018-07-24 14:15:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222376 states. [2018-07-24 14:15:24,110 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:15:24,114 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:15:24,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:15:24 BoogieIcfgContainer [2018-07-24 14:15:24,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:15:24,115 INFO L168 Benchmark]: Toolchain (without parser) took 237030.71 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:24,116 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:15:24,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2566.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:24,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 248.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:24,119 INFO L168 Benchmark]: Boogie Preprocessor took 853.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 914.4 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:24,120 INFO L168 Benchmark]: RCFGBuilder took 12231.45 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 152.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -134.1 MB). Peak memory consumption was 734.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:24,121 INFO L168 Benchmark]: TraceAbstraction took 221125.65 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -870.3 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:24,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2566.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 248.53 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 853.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 914.4 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12231.45 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 152.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -134.1 MB). Peak memory consumption was 734.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221125.65 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -870.3 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 221.0s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 177.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4118 SDtfs, 45651 SDslu, 2534 SDs, 0 SdLazy, 78917 SolverSat, 17765 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 138.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8026 GetRequests, 7862 SyntacticMatches, 28 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179315occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 1254 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 16.5s InterpolantComputationTime, 6940 NumberOfCodeBlocks, 6940 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 10836 ConstructedInterpolants, 0 QuantifiedInterpolants, 19956829 SizeOfPredicates, 25 NumberOfNonLiveVariables, 6247 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 7439/9170 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_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-15-24-139.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-15-24-139.csv Completed graceful shutdown