java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 09:55:59,044 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 09:55:59,055 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 09:55:59,077 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 09:55:59,078 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 09:55:59,079 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 09:55:59,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 09:55:59,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 09:55:59,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 09:55:59,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 09:55:59,095 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 09:55:59,096 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 09:55:59,102 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 09:55:59,103 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 09:55:59,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 09:55:59,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 09:55:59,106 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 09:55:59,120 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 09:55:59,122 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 09:55:59,126 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 09:55:59,127 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 09:55:59,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 09:55:59,131 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 09:55:59,131 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 09:55:59,132 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 09:55:59,137 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 09:55:59,139 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 09:55:59,139 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 09:55:59,140 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 09:55:59,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 09:55:59,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 09:55:59,145 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 09:55:59,146 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 09:55:59,146 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 09:55:59,147 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 09:55:59,148 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 09:55:59,148 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 09:55:59,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 09:55:59,180 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 09:55:59,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 09:55:59,181 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 09:55:59,181 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 09:55:59,182 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 09:55:59,182 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 09:55:59,182 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 09:55:59,182 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 09:55:59,182 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 09:55:59,182 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 09:55:59,183 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 09:55:59,186 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 09:55:59,186 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 09:55:59,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 09:55:59,187 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 09:55:59,187 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 09:55:59,187 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 09:55:59,187 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 09:55:59,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 09:55:59,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 09:55:59,188 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 09:55:59,188 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 09:55:59,188 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 09:55:59,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 09:55:59,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 09:55:59,190 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 09:55:59,190 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 09:55:59,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 09:55:59,191 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 09:55:59,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 09:55:59,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 09:55:59,191 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 09:55:59,191 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 09:55:59,191 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 09:55:59,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 09:55:59,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 09:55:59,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 09:55:59,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 09:55:59,276 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 09:55:59,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23_true-unreach-call_false-termination.c [2018-07-21 09:55:59,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/303aa0684/a02c90990fe24638819245e290b8af7f/FLAGbd3542590 [2018-07-21 09:56:00,333 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 09:56:00,334 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label23_true-unreach-call_false-termination.c [2018-07-21 09:56:00,389 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/303aa0684/a02c90990fe24638819245e290b8af7f/FLAGbd3542590 [2018-07-21 09:56:00,411 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/303aa0684/a02c90990fe24638819245e290b8af7f [2018-07-21 09:56:00,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 09:56:00,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 09:56:00,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 09:56:00,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 09:56:00,445 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 09:56:00,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:56:00" (1/1) ... [2018-07-21 09:56:00,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51862ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:00, skipping insertion in model container [2018-07-21 09:56:00,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:56:00" (1/1) ... [2018-07-21 09:56:00,854 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 09:56:02,260 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 09:56:02,281 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 09:56:03,263 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 09:56:03,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03 WrapperNode [2018-07-21 09:56:03,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 09:56:03,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 09:56:03,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 09:56:03,419 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 09:56:03,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:03,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:03,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 09:56:03,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 09:56:03,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 09:56:03,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 09:56:03,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:03,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:03,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:03,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:03,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:04,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:04,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... [2018-07-21 09:56:04,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 09:56:04,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 09:56:04,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 09:56:04,400 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 09:56:04,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 09:56:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4 [2018-07-21 09:56:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4 [2018-07-21 09:56:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 09:56:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 09:56:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 09:56:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 09:56:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 09:56:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 09:56:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 09:56:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 09:56:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output2 [2018-07-21 09:56:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output2 [2018-07-21 09:56:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output3 [2018-07-21 09:56:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output3 [2018-07-21 09:56:16,724 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 09:56:16,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:56:16 BoogieIcfgContainer [2018-07-21 09:56:16,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 09:56:16,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 09:56:16,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 09:56:16,730 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 09:56:16,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:56:00" (1/3) ... [2018-07-21 09:56:16,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627ff4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:56:16, skipping insertion in model container [2018-07-21 09:56:16,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:56:03" (2/3) ... [2018-07-21 09:56:16,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627ff4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:56:16, skipping insertion in model container [2018-07-21 09:56:16,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:56:16" (3/3) ... [2018-07-21 09:56:16,735 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label23_true-unreach-call_false-termination.c [2018-07-21 09:56:16,745 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 09:56:16,757 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 09:56:16,849 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 09:56:16,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 09:56:16,850 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 09:56:16,851 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 09:56:16,851 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 09:56:16,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 09:56:16,851 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 09:56:16,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 09:56:16,851 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 09:56:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-21 09:56:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2018-07-21 09:56:16,970 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 09:56:16,972 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 09:56:16,973 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-21 09:56:16,981 INFO L82 PathProgramCache]: Analyzing trace with hash 89181362, now seen corresponding path program 1 times [2018-07-21 09:56:16,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 09:56:17,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:17,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 09:56:17,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:17,048 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 09:56:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 09:56:18,894 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 09:56:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 09:56:20,011 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 09:56:20,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 09:56:20,011 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 09:56:20,017 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 09:56:20,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 09:56:20,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 09:56:20,034 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-21 09:56:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 09:56:25,478 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-21 09:56:25,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 09:56:25,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 818 [2018-07-21 09:56:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 09:56:25,536 INFO L225 Difference]: With dead ends: 2647 [2018-07-21 09:56:25,536 INFO L226 Difference]: Without dead ends: 1738 [2018-07-21 09:56:25,545 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 09:56:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-21 09:56:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-21 09:56:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-21 09:56:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3145 transitions. [2018-07-21 09:56:25,763 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3145 transitions. Word has length 818 [2018-07-21 09:56:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 09:56:25,767 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3145 transitions. [2018-07-21 09:56:25,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 09:56:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3145 transitions. [2018-07-21 09:56:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2018-07-21 09:56:25,803 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 09:56:25,804 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 09:56:25,804 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-21 09:56:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1338439191, now seen corresponding path program 1 times [2018-07-21 09:56:25,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 09:56:25,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:25,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 09:56:25,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:25,807 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 09:56:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 09:56:26,902 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-21 09:56:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 09:56:27,882 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 09:56:27,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 09:56:27,883 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 09:56:27,885 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 09:56:27,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 09:56:27,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 09:56:27,886 INFO L87 Difference]: Start difference. First operand 1738 states and 3145 transitions. Second operand 4 states. [2018-07-21 09:56:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 09:56:36,653 INFO L93 Difference]: Finished difference Result 5140 states and 9418 transitions. [2018-07-21 09:56:36,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 09:56:36,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 827 [2018-07-21 09:56:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 09:56:36,679 INFO L225 Difference]: With dead ends: 5140 [2018-07-21 09:56:36,679 INFO L226 Difference]: Without dead ends: 3408 [2018-07-21 09:56:36,686 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 09:56:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-21 09:56:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-21 09:56:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-21 09:56:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 6015 transitions. [2018-07-21 09:56:36,812 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 6015 transitions. Word has length 827 [2018-07-21 09:56:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 09:56:36,815 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 6015 transitions. [2018-07-21 09:56:36,815 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 09:56:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 6015 transitions. [2018-07-21 09:56:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2018-07-21 09:56:36,834 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 09:56:36,835 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 09:56:36,835 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-21 09:56:36,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1017018671, now seen corresponding path program 1 times [2018-07-21 09:56:36,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 09:56:36,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:36,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 09:56:36,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:36,838 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 09:56:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 09:56:37,199 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 09:56:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 09:56:37,974 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 09:56:37,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 09:56:37,975 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 09:56:37,978 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 09:56:37,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 09:56:37,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 09:56:37,979 INFO L87 Difference]: Start difference. First operand 3408 states and 6015 transitions. Second operand 6 states. [2018-07-21 09:56:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 09:56:45,305 INFO L93 Difference]: Finished difference Result 7819 states and 13748 transitions. [2018-07-21 09:56:45,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 09:56:45,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 839 [2018-07-21 09:56:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 09:56:45,336 INFO L225 Difference]: With dead ends: 7819 [2018-07-21 09:56:45,336 INFO L226 Difference]: Without dead ends: 4417 [2018-07-21 09:56:45,346 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 09:56:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2018-07-21 09:56:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 4385. [2018-07-21 09:56:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4385 states. [2018-07-21 09:56:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 6997 transitions. [2018-07-21 09:56:45,525 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 6997 transitions. Word has length 839 [2018-07-21 09:56:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 09:56:45,525 INFO L471 AbstractCegarLoop]: Abstraction has 4385 states and 6997 transitions. [2018-07-21 09:56:45,525 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 09:56:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 6997 transitions. [2018-07-21 09:56:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2018-07-21 09:56:45,545 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 09:56:45,546 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 09:56:45,546 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-21 09:56:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash 390849797, now seen corresponding path program 1 times [2018-07-21 09:56:45,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 09:56:45,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:45,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 09:56:45,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:45,549 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 09:56:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 09:56:45,953 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 09:56:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 09:56:46,808 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 09:56:46,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 09:56:46,808 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 09:56:46,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 09:56:46,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 09:56:46,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 09:56:46,810 INFO L87 Difference]: Start difference. First operand 4385 states and 6997 transitions. Second operand 6 states. [2018-07-21 09:56:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 09:56:52,464 INFO L93 Difference]: Finished difference Result 13446 states and 22068 transitions. [2018-07-21 09:56:52,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 09:56:52,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 877 [2018-07-21 09:56:52,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 09:56:52,518 INFO L225 Difference]: With dead ends: 13446 [2018-07-21 09:56:52,519 INFO L226 Difference]: Without dead ends: 9067 [2018-07-21 09:56:52,537 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 09:56:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9067 states. [2018-07-21 09:56:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9067 to 8976. [2018-07-21 09:56:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2018-07-21 09:56:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 13931 transitions. [2018-07-21 09:56:52,931 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 13931 transitions. Word has length 877 [2018-07-21 09:56:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 09:56:52,932 INFO L471 AbstractCegarLoop]: Abstraction has 8976 states and 13931 transitions. [2018-07-21 09:56:52,932 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 09:56:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 13931 transitions. [2018-07-21 09:56:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2018-07-21 09:56:52,973 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 09:56:52,974 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 09:56:52,974 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-21 09:56:52,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1381353106, now seen corresponding path program 1 times [2018-07-21 09:56:52,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 09:56:52,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:52,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 09:56:52,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 09:56:52,976 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 09:56:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 09:56:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 09:56:53,907 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 09:56:53,907 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 09:56:53,910 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 887 with the following transitions: [2018-07-21 09:56:53,917 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [268], [272], [276], [280], [284], [288], [292], [296], [300], [304], [308], [312], [316], [320], [324], [328], [332], [336], [340], [344], [348], [352], [356], [360], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [703], [711], [719], [727], [735], [743], [751], [755], [757], [852], [853], [854], [857], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1057], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1737], [1741], [1745], [1751], [1755], [1757], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3506], [3510], [3514], [3518], [3522], [3526], [3530], [3532], [3533], [3534], [3536], [3537], [3538], [3540] [2018-07-21 09:56:54,078 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 09:56:54,078 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-21 09:59:56,987 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-21 09:59:56,988 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-21 09:59:56,990 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-21 09:59:56,990 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 09:59:56,990 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-21 09:59:57,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 09:59:57,009 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 09:59:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 09:59:57,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 09:59:57,533 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-21 09:59:57,735 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 09:59:57,735 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 09:59:57,741 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 09:59:57,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:59:57 BoogieIcfgContainer [2018-07-21 09:59:57,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 09:59:57,743 INFO L168 Benchmark]: Toolchain (without parser) took 237316.74 ms. Allocated memory was 306.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 237.1 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 888.5 MB. Max. memory is 5.3 GB. [2018-07-21 09:59:57,744 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 306.7 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 09:59:57,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2982.92 ms. Allocated memory was 306.7 MB in the beginning and 391.1 MB in the end (delta: 84.4 MB). Free memory was 237.1 MB in the beginning and 313.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 106.8 MB. Max. memory is 5.3 GB. [2018-07-21 09:59:57,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 193.09 ms. Allocated memory is still 391.1 MB. Free memory was 313.4 MB in the beginning and 302.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-07-21 09:59:57,747 INFO L168 Benchmark]: Boogie Preprocessor took 787.30 ms. Allocated memory was 391.1 MB in the beginning and 552.1 MB in the end (delta: 161.0 MB). Free memory was 302.7 MB in the beginning and 483.7 MB in the end (delta: -181.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 5.3 GB. [2018-07-21 09:59:57,748 INFO L168 Benchmark]: RCFGBuilder took 12325.36 ms. Allocated memory was 552.1 MB in the beginning and 669.5 MB in the end (delta: 117.4 MB). Free memory was 483.7 MB in the beginning and 451.1 MB in the end (delta: 32.6 MB). Peak memory consumption was 293.9 MB. Max. memory is 5.3 GB. [2018-07-21 09:59:57,748 INFO L168 Benchmark]: TraceAbstraction took 221016.11 ms. Allocated memory was 669.5 MB in the beginning and 2.3 GB in the end (delta: 1.7 GB). Free memory was 451.1 MB in the beginning and 1.4 GB in the end (delta: -938.1 MB). Peak memory consumption was 739.7 MB. Max. memory is 5.3 GB. [2018-07-21 09:59:57,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 306.7 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2982.92 ms. Allocated memory was 306.7 MB in the beginning and 391.1 MB in the end (delta: 84.4 MB). Free memory was 237.1 MB in the beginning and 313.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 106.8 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 193.09 ms. Allocated memory is still 391.1 MB. Free memory was 313.4 MB in the beginning and 302.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 787.30 ms. Allocated memory was 391.1 MB in the beginning and 552.1 MB in the end (delta: 161.0 MB). Free memory was 302.7 MB in the beginning and 483.7 MB in the end (delta: -181.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 12325.36 ms. Allocated memory was 552.1 MB in the beginning and 669.5 MB in the end (delta: 117.4 MB). Free memory was 483.7 MB in the beginning and 451.1 MB in the end (delta: 32.6 MB). Peak memory consumption was 293.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 221016.11 ms. Allocated memory was 669.5 MB in the beginning and 2.3 GB in the end (delta: 1.7 GB). Free memory was 451.1 MB in the beginning and 1.4 GB in the end (delta: -938.1 MB). Peak memory consumption was 739.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4772]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4772). Cancelled while BasicCegarLoop was analyzing trace of length 887 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 220.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 27.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 819 SDtfs, 8519 SDslu, 508 SDs, 0 SdLazy, 17444 SolverSat, 4078 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8976occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 183.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 123 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3361 NumberOfCodeBlocks, 3361 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 3357 ConstructedInterpolants, 0 QuantifiedInterpolants, 7835762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 80/80 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem04_label23_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_09-59-57-772.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem04_label23_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_09-59-57-772.csv Completed graceful shutdown