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/Problem04_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:05:34,117 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:05:34,120 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:05:34,133 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:05:34,133 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:05:34,134 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:05:34,135 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:05:34,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:05:34,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:05:34,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:05:34,141 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:05:34,142 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:05:34,143 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:05:34,143 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:05:34,145 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:05:34,146 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:05:34,147 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:05:34,149 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:05:34,151 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:05:34,152 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:05:34,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:05:34,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:05:34,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:05:34,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:05:34,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:05:34,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:05:34,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:05:34,161 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:05:34,162 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:05:34,164 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:05:34,164 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:05:34,165 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:05:34,165 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:05:34,165 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:05:34,167 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:05:34,168 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:05:34,168 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:05:34,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:05:34,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:05:34,185 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:05:34,186 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:05:34,186 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:05:34,186 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:05:34,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:05:34,187 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:05:34,187 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:05:34,187 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:05:34,187 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:05:34,188 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:05:34,188 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:05:34,188 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:05:34,189 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:05:34,189 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:05:34,189 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:05:34,189 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:05:34,189 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:05:34,190 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:05:34,190 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:05:34,190 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:05:34,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:05:34,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:05:34,191 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:05:34,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:05:34,191 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:05:34,191 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:05:34,192 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:05:34,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:05:34,192 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:05:34,192 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:05:34,192 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:05:34,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:05:34,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:05:34,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:05:34,267 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:05:34,268 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:05:34,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label18_false-unreach-call.c [2018-07-24 11:05:34,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada02631e/4bd84cbfd83a47089358e00bde836054/FLAG1ef22595c [2018-07-24 11:05:35,169 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:05:35,170 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label18_false-unreach-call.c [2018-07-24 11:05:35,214 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada02631e/4bd84cbfd83a47089358e00bde836054/FLAG1ef22595c [2018-07-24 11:05:35,238 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada02631e/4bd84cbfd83a47089358e00bde836054 [2018-07-24 11:05:35,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:05:35,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:05:35,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:05:35,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:05:35,269 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:05:35,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:05:35" (1/1) ... [2018-07-24 11:05:35,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783c4b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:35, skipping insertion in model container [2018-07-24 11:05:35,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:05:35" (1/1) ... [2018-07-24 11:05:35,636 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:05:36,669 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:05:36,687 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:05:37,678 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:05:37,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37 WrapperNode [2018-07-24 11:05:37,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:05:37,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:05:37,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:05:37,823 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:05:37,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:37,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:37,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:05:37,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:05:37,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:05:37,974 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:05:37,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:37,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:38,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:38,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:38,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:38,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:38,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... [2018-07-24 11:05:38,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:05:38,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:05:38,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:05:38,638 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:05:38,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:05:38,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:05:38,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:05:38,710 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:05:38,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:05:38,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:05:38,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:05:38,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:05:38,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:05:38,711 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:05:38,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:05:38,711 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:05:38,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:05:38,712 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:05:38,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:05:49,119 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:05:49,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:05:49 BoogieIcfgContainer [2018-07-24 11:05:49,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:05:49,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:05:49,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:05:49,124 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:05:49,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:05:35" (1/3) ... [2018-07-24 11:05:49,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31df9e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:05:49, skipping insertion in model container [2018-07-24 11:05:49,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:37" (2/3) ... [2018-07-24 11:05:49,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31df9e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:05:49, skipping insertion in model container [2018-07-24 11:05:49,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:05:49" (3/3) ... [2018-07-24 11:05:49,130 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label18_false-unreach-call.c [2018-07-24 11:05:49,140 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:05:49,150 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:05:49,211 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:05:49,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:05:49,212 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:05:49,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:05:49,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:05:49,213 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:05:49,213 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:05:49,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:05:49,213 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:05:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 11:05:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-07-24 11:05:49,325 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:05:49,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:05:49,328 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:05:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1844227760, now seen corresponding path program 1 times [2018-07-24 11:05:49,336 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:05:49,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:49,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:49,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:49,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:05:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:51,087 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:05:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:05:51,892 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:05:51,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:05:51,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:05:51,900 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:05:51,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:05:51,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:05:51,918 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 11:05:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:05:58,881 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 11:05:58,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:05:58,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 790 [2018-07-24 11:05:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:05:58,933 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 11:05:58,933 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 11:05:58,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 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 11:05:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 11:05:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 11:05:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 11:05:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3121 transitions. [2018-07-24 11:05:59,116 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3121 transitions. Word has length 790 [2018-07-24 11:05:59,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:05:59,123 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3121 transitions. [2018-07-24 11:05:59,123 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:05:59,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3121 transitions. [2018-07-24 11:05:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-07-24 11:05:59,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:05:59,156 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:05:59,157 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:05:59,158 INFO L82 PathProgramCache]: Analyzing trace with hash -993019581, now seen corresponding path program 1 times [2018-07-24 11:05:59,158 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:05:59,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:59,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:59,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:59,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:05:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:59,577 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:06:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:00,280 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:06:00,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:06:00,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:06:00,283 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:06:00,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:06:00,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:06:00,284 INFO L87 Difference]: Start difference. First operand 1738 states and 3121 transitions. Second operand 6 states. [2018-07-24 11:06:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:10,222 INFO L93 Difference]: Finished difference Result 5353 states and 9715 transitions. [2018-07-24 11:06:10,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:06:10,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 849 [2018-07-24 11:06:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:10,246 INFO L225 Difference]: With dead ends: 5353 [2018-07-24 11:06:10,247 INFO L226 Difference]: Without dead ends: 3621 [2018-07-24 11:06:10,253 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:06:10,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2018-07-24 11:06:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3589. [2018-07-24 11:06:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2018-07-24 11:06:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 6080 transitions. [2018-07-24 11:06:10,396 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 6080 transitions. Word has length 849 [2018-07-24 11:06:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:10,397 INFO L471 AbstractCegarLoop]: Abstraction has 3589 states and 6080 transitions. [2018-07-24 11:06:10,397 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:06:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 6080 transitions. [2018-07-24 11:06:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-07-24 11:06:10,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:10,426 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, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:10,426 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1989117979, now seen corresponding path program 1 times [2018-07-24 11:06:10,427 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:10,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:10,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:10,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:10,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:11,478 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:06:11,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:06:11,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:06:11,480 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:06:11,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:06:11,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:06:11,481 INFO L87 Difference]: Start difference. First operand 3589 states and 6080 transitions. Second operand 6 states. [2018-07-24 11:06:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:19,240 INFO L93 Difference]: Finished difference Result 9116 states and 15455 transitions. [2018-07-24 11:06:19,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:06:19,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 869 [2018-07-24 11:06:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:19,274 INFO L225 Difference]: With dead ends: 9116 [2018-07-24 11:06:19,275 INFO L226 Difference]: Without dead ends: 5533 [2018-07-24 11:06:19,287 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:06:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2018-07-24 11:06:19,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5499. [2018-07-24 11:06:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5499 states. [2018-07-24 11:06:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 8494 transitions. [2018-07-24 11:06:19,453 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 8494 transitions. Word has length 869 [2018-07-24 11:06:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:19,454 INFO L471 AbstractCegarLoop]: Abstraction has 5499 states and 8494 transitions. [2018-07-24 11:06:19,454 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:06:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 8494 transitions. [2018-07-24 11:06:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2018-07-24 11:06:19,481 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:19,482 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:19,482 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:19,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1509584984, now seen corresponding path program 1 times [2018-07-24 11:06:19,483 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:19,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:19,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:19,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:19,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:20,612 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:20,612 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:06:20,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:20,742 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:21,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:22,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:22,425 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:06:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:23,128 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:23,129 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:06:23,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:23,145 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:23,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 11:06:24,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 11:06:25,801 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-07-24 11:06:25,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-07-24 11:06:25,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:06:25,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:06:25,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:06:25,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:06:25,813 INFO L87 Difference]: Start difference. First operand 5499 states and 8494 transitions. Second operand 5 states. [2018-07-24 11:06:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:33,743 INFO L93 Difference]: Finished difference Result 16464 states and 26307 transitions. [2018-07-24 11:06:33,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:06:33,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 889 [2018-07-24 11:06:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:33,802 INFO L225 Difference]: With dead ends: 16464 [2018-07-24 11:06:33,802 INFO L226 Difference]: Without dead ends: 10971 [2018-07-24 11:06:33,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3561 GetRequests, 3544 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:06:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2018-07-24 11:06:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 10865. [2018-07-24 11:06:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10865 states. [2018-07-24 11:06:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 15483 transitions. [2018-07-24 11:06:34,108 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 15483 transitions. Word has length 889 [2018-07-24 11:06:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:34,109 INFO L471 AbstractCegarLoop]: Abstraction has 10865 states and 15483 transitions. [2018-07-24 11:06:34,109 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:06:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 15483 transitions. [2018-07-24 11:06:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2018-07-24 11:06:34,152 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:34,153 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:34,154 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1757041119, now seen corresponding path program 1 times [2018-07-24 11:06:34,154 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:34,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:34,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:34,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:34,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 150 proven. 58 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 11:06:35,373 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:35,373 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) [2018-07-24 11:06:35,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:35,388 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:06:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:35,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 11:06:36,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 150 proven. 58 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 11:06:37,674 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:37,674 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:06:37,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:37,690 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:38,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 11:06:39,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 150 proven. 58 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 11:06:39,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:06:39,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 11:06:39,932 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:06:39,933 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:06:39,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:06:39,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:06:39,934 INFO L87 Difference]: Start difference. First operand 10865 states and 15483 transitions. Second operand 9 states. [2018-07-24 11:06:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:55,106 INFO L93 Difference]: Finished difference Result 43132 states and 64796 transitions. [2018-07-24 11:06:55,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-24 11:06:55,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 937 [2018-07-24 11:06:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:55,253 INFO L225 Difference]: With dead ends: 43132 [2018-07-24 11:06:55,253 INFO L226 Difference]: Without dead ends: 32273 [2018-07-24 11:06:55,295 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3796 GetRequests, 3759 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=306, Invalid=1100, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 11:06:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32273 states. [2018-07-24 11:06:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32273 to 32070. [2018-07-24 11:06:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32070 states. [2018-07-24 11:06:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32070 states to 32070 states and 42347 transitions. [2018-07-24 11:06:56,047 INFO L78 Accepts]: Start accepts. Automaton has 32070 states and 42347 transitions. Word has length 937 [2018-07-24 11:06:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:56,048 INFO L471 AbstractCegarLoop]: Abstraction has 32070 states and 42347 transitions. [2018-07-24 11:06:56,048 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:06:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 32070 states and 42347 transitions. [2018-07-24 11:06:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-07-24 11:06:56,177 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:56,178 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:56,178 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash 972091836, now seen corresponding path program 1 times [2018-07-24 11:06:56,179 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:56,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:56,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:56,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:56,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:56,577 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:06:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 252 proven. 98 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 11:06:57,381 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:57,381 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 11:06:57,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:57,400 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:57,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-07-24 11:06:58,643 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 252 proven. 98 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 11:06:59,178 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:59,178 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 11:06:59,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:59,193 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:00,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-07-24 11:07:01,088 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 252 proven. 98 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 11:07:01,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:07:01,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:07:01,573 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:07:01,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:07:01,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:07:01,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:07:01,576 INFO L87 Difference]: Start difference. First operand 32070 states and 42347 transitions. Second operand 9 states. [2018-07-24 11:07:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:14,212 INFO L93 Difference]: Finished difference Result 78551 states and 106728 transitions. [2018-07-24 11:07:14,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:07:14,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1037 [2018-07-24 11:07:14,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:14,338 INFO L225 Difference]: With dead ends: 78551 [2018-07-24 11:07:14,338 INFO L226 Difference]: Without dead ends: 43183 [2018-07-24 11:07:14,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4164 GetRequests, 4143 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:07:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43183 states. [2018-07-24 11:07:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43183 to 43136. [2018-07-24 11:07:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43136 states. [2018-07-24 11:07:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43136 states to 43136 states and 48415 transitions. [2018-07-24 11:07:15,153 INFO L78 Accepts]: Start accepts. Automaton has 43136 states and 48415 transitions. Word has length 1037 [2018-07-24 11:07:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:15,154 INFO L471 AbstractCegarLoop]: Abstraction has 43136 states and 48415 transitions. [2018-07-24 11:07:15,154 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:07:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 43136 states and 48415 transitions. [2018-07-24 11:07:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2018-07-24 11:07:15,202 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:15,203 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:07:15,203 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1168617028, now seen corresponding path program 1 times [2018-07-24 11:07:15,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:15,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:15,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:15,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:15,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 320 proven. 103 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 11:07:16,788 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:16,788 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 11:07:16,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:16,800 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:17,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 11:07:18,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 11:07:19,193 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:07:19,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 11:07:19,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:07:19,195 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:07:19,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:07:19,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:07:19,196 INFO L87 Difference]: Start difference. First operand 43136 states and 48415 transitions. Second operand 3 states. [2018-07-24 11:07:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:22,620 INFO L93 Difference]: Finished difference Result 86266 states and 96824 transitions. [2018-07-24 11:07:22,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:07:22,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1094 [2018-07-24 11:07:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:22,751 INFO L225 Difference]: With dead ends: 86266 [2018-07-24 11:07:22,751 INFO L226 Difference]: Without dead ends: 43136 [2018-07-24 11:07:22,809 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2193 GetRequests, 2183 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:07:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43136 states. [2018-07-24 11:07:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43136 to 43128. [2018-07-24 11:07:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2018-07-24 11:07:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 46821 transitions. [2018-07-24 11:07:23,421 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 46821 transitions. Word has length 1094 [2018-07-24 11:07:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:23,423 INFO L471 AbstractCegarLoop]: Abstraction has 43128 states and 46821 transitions. [2018-07-24 11:07:23,423 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:07:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 46821 transitions. [2018-07-24 11:07:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2018-07-24 11:07:23,479 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:23,480 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:07:23,480 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:23,480 INFO L82 PathProgramCache]: Analyzing trace with hash -767759485, now seen corresponding path program 1 times [2018-07-24 11:07:23,481 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:23,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:23,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:23,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:23,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:23,998 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 11:07:24,353 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 11:07:24,586 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 11:07:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 540 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:07:25,953 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:25,953 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:07:25,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:25,961 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:26,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-07-24 11:07:27,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 557 proven. 73 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 11:07:28,517 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:28,518 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:07:28,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:28,533 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:29,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-07-24 11:07:31,102 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 557 proven. 73 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 11:07:32,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:07:32,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-07-24 11:07:32,074 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:07:32,077 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 11:07:32,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 11:07:32,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:07:32,078 INFO L87 Difference]: Start difference. First operand 43128 states and 46821 transitions. Second operand 14 states. [2018-07-24 11:08:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:08:07,733 INFO L93 Difference]: Finished difference Result 238056 states and 276867 transitions. [2018-07-24 11:08:07,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-24 11:08:07,733 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1336 [2018-07-24 11:08:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:08:08,432 INFO L225 Difference]: With dead ends: 238056 [2018-07-24 11:08:08,432 INFO L226 Difference]: Without dead ends: 194934 [2018-07-24 11:08:08,589 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5456 GetRequests, 5384 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=876, Invalid=3680, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 11:08:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194934 states. [2018-07-24 11:08:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194934 to 192789. [2018-07-24 11:08:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192789 states. [2018-07-24 11:08:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192789 states to 192789 states and 210674 transitions. [2018-07-24 11:08:12,584 INFO L78 Accepts]: Start accepts. Automaton has 192789 states and 210674 transitions. Word has length 1336 [2018-07-24 11:08:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:08:12,585 INFO L471 AbstractCegarLoop]: Abstraction has 192789 states and 210674 transitions. [2018-07-24 11:08:12,585 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 11:08:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 192789 states and 210674 transitions. [2018-07-24 11:08:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2018-07-24 11:08:12,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:08:12,849 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:08:12,849 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:08:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1989008136, now seen corresponding path program 1 times [2018-07-24 11:08:12,850 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:08:12,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:12,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:12,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:12,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:08:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 570 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:08:16,357 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:08:16,357 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:08:16,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:16,369 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:08:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:16,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:08:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:08:18,215 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:08:20,300 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:08:20,300 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:08:20,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:20,317 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:08:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:21,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:08:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:08:22,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:08:24,313 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:08:24,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 19 [2018-07-24 11:08:24,316 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:08:24,318 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 11:08:24,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 11:08:24,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:08:24,319 INFO L87 Difference]: Start difference. First operand 192789 states and 210674 transitions. Second operand 13 states. [2018-07-24 11:08:57,314 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 11:09:05,311 WARN L169 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 11:09:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:09:07,615 INFO L93 Difference]: Finished difference Result 597025 states and 680321 transitions. [2018-07-24 11:09:07,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-24 11:09:07,615 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1368 [2018-07-24 11:09:07,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:09:08,787 INFO L225 Difference]: With dead ends: 597025 [2018-07-24 11:09:08,787 INFO L226 Difference]: Without dead ends: 378521 [2018-07-24 11:09:09,054 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5689 GetRequests, 5541 SyntacticMatches, 3 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2875, Invalid=18587, Unknown=0, NotChecked=0, Total=21462 [2018-07-24 11:09:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378521 states. Received shutdown request... [2018-07-24 11:09:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378521 to 368525. [2018-07-24 11:09:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368525 states. [2018-07-24 11:09:13,986 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:09:13,992 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:09:13,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:09:13 BoogieIcfgContainer [2018-07-24 11:09:13,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:09:13,994 INFO L168 Benchmark]: Toolchain (without parser) took 218740.85 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 133.3 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-07-24 11:09:13,995 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 11:09:13,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2566.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:13,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:13,997 INFO L168 Benchmark]: Boogie Preprocessor took 662.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 833.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:13,998 INFO L168 Benchmark]: RCFGBuilder took 10482.84 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 173.0 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -73.4 MB). Peak memory consumption was 732.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:13,999 INFO L168 Benchmark]: TraceAbstraction took 204871.69 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-07-24 11:09:14,004 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 2566.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 150.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 662.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 833.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10482.84 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 173.0 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -73.4 MB). Peak memory consumption was 732.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204871.69 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4688]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4688). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 204.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 145.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2569 SDtfs, 62536 SDslu, 3636 SDs, 0 SdLazy, 90182 SolverSat, 23864 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24888 GetRequests, 24561 SyntacticMatches, 28 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10280 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192789occurred in iteration=8, 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: 11.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2575 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 7.5s SatisfiabilityAnalysisTime, 29.7s InterpolantComputationTime, 21397 NumberOfCodeBlocks, 21397 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 33594 ConstructedInterpolants, 0 QuantifiedInterpolants, 65132904 SizeOfPredicates, 10 NumberOfNonLiveVariables, 17099 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 11204/12175 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/Problem04_label18_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-09-14-019.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label18_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-09-14-019.csv Completed graceful shutdown