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/Problem19_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:37:34,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:37:34,891 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:37:34,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:37:34,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:37:34,907 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:37:34,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:37:34,910 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:37:34,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:37:34,917 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:37:34,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:37:34,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:37:34,923 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:37:34,924 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:37:34,928 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:37:34,932 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:37:34,933 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:37:34,937 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:37:34,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:37:34,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:37:34,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:37:34,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:37:34,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:37:34,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:37:34,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:37:34,956 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:37:34,957 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:37:34,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:37:34,960 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:37:34,961 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:37:34,961 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:37:34,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:37:34,962 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:37:34,962 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:37:34,963 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:37:34,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:37:34,964 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:37:34,983 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:37:34,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:37:34,985 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:37:34,985 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:37:34,988 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:37:34,988 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:37:34,988 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:37:34,989 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:37:34,989 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:37:34,989 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:37:34,989 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:37:34,990 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:37:34,991 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:37:34,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:37:34,992 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:37:34,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:37:34,992 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:37:34,992 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:37:34,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:37:34,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:37:34,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:37:34,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:37:34,995 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:37:34,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:37:34,995 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:37:34,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:37:34,996 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:37:34,996 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:37:34,996 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:37:34,996 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:37:34,996 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:37:34,997 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:37:34,997 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:37:35,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:37:35,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:37:35,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:37:35,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:37:35,089 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:37:35,089 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label21_false-unreach-call.c [2018-07-24 12:37:35,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39d7de5a/86d706b7179349ebb2c75b6e93e994b1/FLAG521c2d687 [2018-07-24 12:37:36,084 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:37:36,085 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label21_false-unreach-call.c [2018-07-24 12:37:36,138 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39d7de5a/86d706b7179349ebb2c75b6e93e994b1/FLAG521c2d687 [2018-07-24 12:37:36,154 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39d7de5a/86d706b7179349ebb2c75b6e93e994b1 [2018-07-24 12:37:36,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:37:36,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:37:36,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:37:36,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:37:36,178 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:37:36,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:37:36" (1/1) ... [2018-07-24 12:37:36,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f918427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:36, skipping insertion in model container [2018-07-24 12:37:36,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:37:36" (1/1) ... [2018-07-24 12:37:36,692 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:37:38,611 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:37:38,637 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:37:39,770 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:37:40,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40 WrapperNode [2018-07-24 12:37:40,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:37:40,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:37:40,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:37:40,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:37:40,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:40,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:40,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:37:40,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:37:40,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:37:40,762 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:37:41,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:41,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:42,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:42,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:42,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:42,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:42,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... [2018-07-24 12:37:42,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:37:42,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:37:42,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:37:42,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:37:42,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:37:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:37:42,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:37:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:37:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:37:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:37:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:37:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:37:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:37:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:37:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:37:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:37:42,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:37:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:37:42,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:37:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:37:42,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:37:42,704 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:37:42,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:38:01,041 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:38:01,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:38:01 BoogieIcfgContainer [2018-07-24 12:38:01,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:38:01,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:38:01,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:38:01,046 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:38:01,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:37:36" (1/3) ... [2018-07-24 12:38:01,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d715ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:38:01, skipping insertion in model container [2018-07-24 12:38:01,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:37:40" (2/3) ... [2018-07-24 12:38:01,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d715ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:38:01, skipping insertion in model container [2018-07-24 12:38:01,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:38:01" (3/3) ... [2018-07-24 12:38:01,049 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label21_false-unreach-call.c [2018-07-24 12:38:01,058 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:38:01,074 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:38:01,144 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:38:01,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:38:01,145 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:38:01,146 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:38:01,146 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:38:01,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:38:01,146 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:38:01,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:38:01,146 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:38:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 12:38:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-24 12:38:01,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:01,204 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] [2018-07-24 12:38:01,205 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash -801718938, now seen corresponding path program 1 times [2018-07-24 12:38:01,215 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:01,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:01,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:01,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:01,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:01,662 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:38:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:38:01,761 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:38:01,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:38:01,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:01,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:38:01,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:38:01,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:38:01,789 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 12:38:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:18,836 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-07-24 12:38:18,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:38:18,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-07-24 12:38:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:18,888 INFO L225 Difference]: With dead ends: 5042 [2018-07-24 12:38:18,888 INFO L226 Difference]: Without dead ends: 3262 [2018-07-24 12:38:18,902 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:38:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-07-24 12:38:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-07-24 12:38:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-07-24 12:38:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-07-24 12:38:19,117 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 22 [2018-07-24 12:38:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:19,117 INFO L471 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-07-24 12:38:19,118 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:38:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-07-24 12:38:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 12:38:19,124 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:19,125 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:38:19,125 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1328784185, now seen corresponding path program 1 times [2018-07-24 12:38:19,126 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:19,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:19,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:19,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:19,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:38:19,696 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:38:19,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:38:19,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:19,698 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:38:19,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:38:19,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:38:19,701 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-07-24 12:38:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:57,704 INFO L93 Difference]: Finished difference Result 9615 states and 17996 transitions. [2018-07-24 12:38:57,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:38:57,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-07-24 12:38:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:57,742 INFO L225 Difference]: With dead ends: 9615 [2018-07-24 12:38:57,743 INFO L226 Difference]: Without dead ends: 6407 [2018-07-24 12:38:57,753 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:38:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2018-07-24 12:38:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 6344. [2018-07-24 12:38:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6344 states. [2018-07-24 12:38:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 10095 transitions. [2018-07-24 12:38:57,949 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 10095 transitions. Word has length 122 [2018-07-24 12:38:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:57,951 INFO L471 AbstractCegarLoop]: Abstraction has 6344 states and 10095 transitions. [2018-07-24 12:38:57,951 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:38:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 10095 transitions. [2018-07-24 12:38:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-24 12:38:57,959 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:57,960 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:38:57,960 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1136717965, now seen corresponding path program 1 times [2018-07-24 12:38:57,960 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:57,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:57,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:57,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:57,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:38:58,241 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:38:58,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:38:58,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:58,242 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:38:58,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:38:58,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:38:58,243 INFO L87 Difference]: Start difference. First operand 6344 states and 10095 transitions. Second operand 6 states. [2018-07-24 12:39:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:39:26,542 INFO L93 Difference]: Finished difference Result 24200 states and 39708 transitions. [2018-07-24 12:39:26,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:39:26,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-07-24 12:39:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:39:26,631 INFO L225 Difference]: With dead ends: 24200 [2018-07-24 12:39:26,632 INFO L226 Difference]: Without dead ends: 17862 [2018-07-24 12:39:26,663 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 12:39:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17862 states. [2018-07-24 12:39:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17862 to 17722. [2018-07-24 12:39:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17722 states. [2018-07-24 12:39:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17722 states to 17722 states and 25593 transitions. [2018-07-24 12:39:27,121 INFO L78 Accepts]: Start accepts. Automaton has 17722 states and 25593 transitions. Word has length 132 [2018-07-24 12:39:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:39:27,122 INFO L471 AbstractCegarLoop]: Abstraction has 17722 states and 25593 transitions. [2018-07-24 12:39:27,122 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:39:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17722 states and 25593 transitions. [2018-07-24 12:39:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-24 12:39:27,138 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:39:27,138 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:39:27,139 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:39:27,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1585236341, now seen corresponding path program 1 times [2018-07-24 12:39:27,139 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:39:27,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:27,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:27,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:27,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:39:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:27,428 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:39:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:39:27,512 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:39:27,512 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:39:27,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:27,526 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:39:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:27,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:39:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:39:28,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:39:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:39:28,464 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:39:28,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:39:28,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:39:28,465 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:39:28,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:39:28,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:39:28,466 INFO L87 Difference]: Start difference. First operand 17722 states and 25593 transitions. Second operand 5 states. [2018-07-24 12:39:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:39:57,425 INFO L93 Difference]: Finished difference Result 43630 states and 65487 transitions. [2018-07-24 12:39:57,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:39:57,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-07-24 12:39:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:39:57,560 INFO L225 Difference]: With dead ends: 43630 [2018-07-24 12:39:57,560 INFO L226 Difference]: Without dead ends: 25914 [2018-07-24 12:39:57,614 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:39:57,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25914 states. [2018-07-24 12:39:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25914 to 25559. [2018-07-24 12:39:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25559 states. [2018-07-24 12:39:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25559 states to 25559 states and 37010 transitions. [2018-07-24 12:39:58,229 INFO L78 Accepts]: Start accepts. Automaton has 25559 states and 37010 transitions. Word has length 230 [2018-07-24 12:39:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:39:58,230 INFO L471 AbstractCegarLoop]: Abstraction has 25559 states and 37010 transitions. [2018-07-24 12:39:58,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:39:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 25559 states and 37010 transitions. [2018-07-24 12:39:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-24 12:39:58,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:39:58,240 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:39:58,240 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:39:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash 213439460, now seen corresponding path program 1 times [2018-07-24 12:39:58,241 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:39:58,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:58,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:58,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:58,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:39:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:39:58,752 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:39:58,752 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:39:58,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:58,768 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:39:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:58,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:39:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:39:59,025 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:39:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-07-24 12:39:59,285 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:39:59,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-07-24 12:39:59,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:39:59,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:39:59,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:39:59,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:39:59,287 INFO L87 Difference]: Start difference. First operand 25559 states and 37010 transitions. Second operand 3 states. [2018-07-24 12:40:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:40:14,173 INFO L93 Difference]: Finished difference Result 72178 states and 110112 transitions. [2018-07-24 12:40:14,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:40:14,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2018-07-24 12:40:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:40:14,330 INFO L225 Difference]: With dead ends: 72178 [2018-07-24 12:40:14,331 INFO L226 Difference]: Without dead ends: 46625 [2018-07-24 12:40:14,397 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:40:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46625 states. [2018-07-24 12:40:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46625 to 46588. [2018-07-24 12:40:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46588 states. [2018-07-24 12:40:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46588 states to 46588 states and 64254 transitions. [2018-07-24 12:40:15,251 INFO L78 Accepts]: Start accepts. Automaton has 46588 states and 64254 transitions. Word has length 231 [2018-07-24 12:40:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:40:15,251 INFO L471 AbstractCegarLoop]: Abstraction has 46588 states and 64254 transitions. [2018-07-24 12:40:15,252 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:40:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 46588 states and 64254 transitions. [2018-07-24 12:40:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-24 12:40:15,280 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:40:15,281 INFO L353 BasicCegarLoop]: trace histogram [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, 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] [2018-07-24 12:40:15,281 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:40:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1160276184, now seen corresponding path program 1 times [2018-07-24 12:40:15,282 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:40:15,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:40:15,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:40:15,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:40:15,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:40:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:40:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 45 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 12:40:15,676 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:40:15,676 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:40:15,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:40:15,696 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:40:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:40:15,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:40:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:40:16,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:40:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 45 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 12:40:16,746 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:40:16,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 12:40:16,746 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:40:16,747 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:40:16,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:40:16,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:40:16,748 INFO L87 Difference]: Start difference. First operand 46588 states and 64254 transitions. Second operand 5 states. [2018-07-24 12:40:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:40:45,628 INFO L93 Difference]: Finished difference Result 140978 states and 203012 transitions. [2018-07-24 12:40:45,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:40:45,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-07-24 12:40:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:40:46,045 INFO L225 Difference]: With dead ends: 140978 [2018-07-24 12:40:46,045 INFO L226 Difference]: Without dead ends: 94396 [2018-07-24 12:40:46,159 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 622 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:40:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94396 states. [2018-07-24 12:40:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94396 to 93820. [2018-07-24 12:40:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93820 states. [2018-07-24 12:40:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93820 states to 93820 states and 127961 transitions. [2018-07-24 12:40:47,864 INFO L78 Accepts]: Start accepts. Automaton has 93820 states and 127961 transitions. Word has length 312 [2018-07-24 12:40:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:40:47,865 INFO L471 AbstractCegarLoop]: Abstraction has 93820 states and 127961 transitions. [2018-07-24 12:40:47,865 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:40:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 93820 states and 127961 transitions. [2018-07-24 12:40:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-24 12:40:47,880 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:40:47,881 INFO L353 BasicCegarLoop]: trace histogram [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, 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 12:40:47,881 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:40:47,881 INFO L82 PathProgramCache]: Analyzing trace with hash -443056080, now seen corresponding path program 1 times [2018-07-24 12:40:47,881 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:40:47,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:40:47,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:40:47,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:40:47,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:40:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:40:48,201 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:40:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 30 proven. 130 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:40:48,287 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:40:48,287 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:40:48,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:40:48,297 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:40:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:40:48,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:40:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:40:49,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:40:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 30 proven. 130 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:40:49,535 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:40:49,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:40:49,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:40:49,536 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:40:49,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:40:49,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:40:49,537 INFO L87 Difference]: Start difference. First operand 93820 states and 127961 transitions. Second operand 5 states. [2018-07-24 12:41:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:41:09,759 INFO L93 Difference]: Finished difference Result 212209 states and 299591 transitions. [2018-07-24 12:41:09,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:41:09,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2018-07-24 12:41:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:41:10,135 INFO L225 Difference]: With dead ends: 212209 [2018-07-24 12:41:10,135 INFO L226 Difference]: Without dead ends: 118395 [2018-07-24 12:41:10,286 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 638 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:41:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118395 states. [2018-07-24 12:41:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118395 to 117445. [2018-07-24 12:41:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117445 states. [2018-07-24 12:41:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117445 states to 117445 states and 154290 transitions. [2018-07-24 12:41:12,042 INFO L78 Accepts]: Start accepts. Automaton has 117445 states and 154290 transitions. Word has length 322 [2018-07-24 12:41:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:41:12,043 INFO L471 AbstractCegarLoop]: Abstraction has 117445 states and 154290 transitions. [2018-07-24 12:41:12,043 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:41:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 117445 states and 154290 transitions. [2018-07-24 12:41:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2018-07-24 12:41:12,090 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:41:12,091 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:41:12,091 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:41:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash -857238985, now seen corresponding path program 1 times [2018-07-24 12:41:12,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:41:12,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:12,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:12,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:12,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:41:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:41:13,644 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:41:13,644 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 12:41:13,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:13,653 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:41:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:13,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:41:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:41:14,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:41:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:41:15,159 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:41:15,159 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 12:41:15,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:15,175 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:41:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:15,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:41:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:41:16,172 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:41:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:41:16,941 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:41:16,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:41:16,942 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:41:16,943 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:41:16,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:41:16,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:41:16,944 INFO L87 Difference]: Start difference. First operand 117445 states and 154290 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 12:41:32,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-24 12:41:32,369 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:41:32,375 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:41:32,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:41:32 BoogieIcfgContainer [2018-07-24 12:41:32,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:41:32,376 INFO L168 Benchmark]: Toolchain (without parser) took 236209.77 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 237.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 12:41:32,377 INFO L168 Benchmark]: CDTParser took 0.22 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 12:41:32,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4252.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 212.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -133.1 MB). Peak memory consumption was 488.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:41:32,379 INFO L168 Benchmark]: Boogie Procedure Inliner took 339.05 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:41:32,380 INFO L168 Benchmark]: Boogie Preprocessor took 1871.88 ms. Allocated memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: 814.2 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -840.3 MB). Peak memory consumption was 127.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:41:32,381 INFO L168 Benchmark]: RCFGBuilder took 18408.02 ms. Allocated memory was 2.5 GB in the beginning and 2.8 GB in the end (delta: 301.5 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 241.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 12:41:32,382 INFO L168 Benchmark]: TraceAbstraction took 211332.95 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 880.8 MB). Free memory was 2.1 GB in the beginning and 1.1 GB in the end (delta: 905.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 12:41:32,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 4252.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 212.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -133.1 MB). Peak memory consumption was 488.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 339.05 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1871.88 ms. Allocated memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: 814.2 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -840.3 MB). Peak memory consumption was 127.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18408.02 ms. Allocated memory was 2.5 GB in the beginning and 2.8 GB in the end (delta: 301.5 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 241.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 211332.95 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 880.8 MB). Free memory was 2.1 GB in the beginning and 1.1 GB in the end (delta: 905.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (117445states) and interpolant automaton (currently 22 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (57258 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 211.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 193.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5417 SDtfs, 42128 SDslu, 4775 SDs, 0 SdLazy, 70810 SolverSat, 17995 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 168.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5641 GetRequests, 5557 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117445occurred in iteration=7, 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: 5.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 2169 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 4989 NumberOfCodeBlocks, 4989 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7746 ConstructedInterpolants, 0 QuantifiedInterpolants, 8486402 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4294 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 2994/3759 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/Problem19_label21_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-41-32-401.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label21_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-41-32-401.csv Completed graceful shutdown