java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:15:01,592 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:15:01,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:15:01,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:15:01,607 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:15:01,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:15:01,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:15:01,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:15:01,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:15:01,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:15:01,616 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:15:01,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:15:01,617 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:15:01,618 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:15:01,619 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:15:01,620 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:15:01,621 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:15:01,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:15:01,625 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:15:01,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:15:01,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:15:01,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:15:01,631 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:15:01,631 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:15:01,631 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:15:01,632 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:15:01,633 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:15:01,634 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:15:01,635 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:15:01,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:15:01,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:15:01,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:15:01,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:15:01,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:15:01,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:15:01,639 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:15:01,639 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 15:15:01,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:15:01,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:15:01,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:15:01,668 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:15:01,668 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:15:01,669 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:15:01,669 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:15:01,669 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:15:01,669 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:15:01,669 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:15:01,670 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:15:01,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:15:01,671 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:15:01,671 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:15:01,671 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:15:01,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:15:01,672 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:15:01,672 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:15:01,672 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:15:01,673 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:15:01,673 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:15:01,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:15:01,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:15:01,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:15:01,674 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:15:01,674 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:15:01,674 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:15:01,674 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:15:01,675 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:15:01,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:15:01,675 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:15:01,675 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:15:01,676 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:15:01,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:15:01,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:15:01,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:15:01,761 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:15:01,761 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:15:01,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-07-24 15:15:02,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bc862fb/b0c7144e98874b999ed43bf3619c72e4/FLAG1c630d419 [2018-07-24 15:15:02,705 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:15:02,706 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-07-24 15:15:02,754 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bc862fb/b0c7144e98874b999ed43bf3619c72e4/FLAG1c630d419 [2018-07-24 15:15:02,770 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bc862fb/b0c7144e98874b999ed43bf3619c72e4 [2018-07-24 15:15:02,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:15:02,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:15:02,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:15:02,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:15:02,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:15:02,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:15:02" (1/1) ... [2018-07-24 15:15:02,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c71e361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:02, skipping insertion in model container [2018-07-24 15:15:02,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:15:02" (1/1) ... [2018-07-24 15:15:03,271 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:15:05,077 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:15:05,094 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:15:06,363 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:15:07,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07 WrapperNode [2018-07-24 15:15:07,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:15:07,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:15:07,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:15:07,006 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:15:07,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:07,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:07,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:15:07,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:15:07,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:15:07,370 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:15:08,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:08,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:08,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:08,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:08,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:08,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:08,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (1/1) ... [2018-07-24 15:15:09,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:15:09,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:15:09,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:15:09,099 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:15:09,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (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 15:15:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:15:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:15:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-07-24 15:15:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-07-24 15:15:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:15:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:15:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output6 [2018-07-24 15:15:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output6 [2018-07-24 15:15:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:15:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:15:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:15:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:15:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 15:15:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 15:15:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:15:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:15:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:15:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:15:31,620 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:15:31,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:15:31 BoogieIcfgContainer [2018-07-24 15:15:31,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:15:31,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:15:31,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:15:31,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:15:31,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:15:02" (1/3) ... [2018-07-24 15:15:31,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a513d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:15:31, skipping insertion in model container [2018-07-24 15:15:31,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:07" (2/3) ... [2018-07-24 15:15:31,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a513d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:15:31, skipping insertion in model container [2018-07-24 15:15:31,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:15:31" (3/3) ... [2018-07-24 15:15:31,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label49_true-unreach-call.c [2018-07-24 15:15:31,639 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:15:31,650 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:15:31,721 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:15:31,722 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:15:31,722 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:15:31,722 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:15:31,722 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:15:31,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:15:31,722 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:15:31,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:15:31,723 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:15:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:15:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-24 15:15:31,781 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:31,783 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] [2018-07-24 15:15:31,784 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:15:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash -815414520, now seen corresponding path program 1 times [2018-07-24 15:15:31,792 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:31,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:31,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:31,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:31,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:32,329 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 15:15:32,331 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:15:32,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:15:32,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:32,338 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:15:32,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:15:32,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:15:32,358 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 15:15:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:15:50,673 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-07-24 15:15:50,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:15:50,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-07-24 15:15:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:15:50,724 INFO L225 Difference]: With dead ends: 4998 [2018-07-24 15:15:50,724 INFO L226 Difference]: Without dead ends: 3218 [2018-07-24 15:15:50,736 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:15:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-07-24 15:15:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-07-24 15:15:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-07-24 15:15:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-07-24 15:15:50,930 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 49 [2018-07-24 15:15:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:15:50,930 INFO L471 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-07-24 15:15:50,931 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:15:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-07-24 15:15:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-24 15:15:50,938 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:50,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:50,939 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:15:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash -554245742, now seen corresponding path program 1 times [2018-07-24 15:15:50,939 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:50,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:50,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:15:51,529 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:15:51,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:15:51,529 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:51,532 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:15:51,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:15:51,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:15:51,534 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-07-24 15:16:31,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:16:31,228 INFO L93 Difference]: Finished difference Result 9683 states and 17692 transitions. [2018-07-24 15:16:31,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:16:31,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-07-24 15:16:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:16:31,272 INFO L225 Difference]: With dead ends: 9683 [2018-07-24 15:16:31,273 INFO L226 Difference]: Without dead ends: 6474 [2018-07-24 15:16:31,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:16:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2018-07-24 15:16:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 6371. [2018-07-24 15:16:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6371 states. [2018-07-24 15:16:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 9959 transitions. [2018-07-24 15:16:31,505 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 9959 transitions. Word has length 121 [2018-07-24 15:16:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:16:31,506 INFO L471 AbstractCegarLoop]: Abstraction has 6371 states and 9959 transitions. [2018-07-24 15:16:31,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:16:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 9959 transitions. [2018-07-24 15:16:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-24 15:16:31,510 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:16:31,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:31,510 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:16:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1729585757, now seen corresponding path program 1 times [2018-07-24 15:16:31,511 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:16:31,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:31,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:31,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:31,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:16:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:31,792 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:16:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:16:31,893 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:16:31,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:16:31,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:16:31,894 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:16:31,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:16:31,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:16:31,895 INFO L87 Difference]: Start difference. First operand 6371 states and 9959 transitions. Second operand 6 states. [2018-07-24 15:17:00,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:00,640 INFO L93 Difference]: Finished difference Result 24579 states and 39589 transitions. [2018-07-24 15:17:00,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:17:00,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-07-24 15:17:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:00,729 INFO L225 Difference]: With dead ends: 24579 [2018-07-24 15:17:00,729 INFO L226 Difference]: Without dead ends: 18214 [2018-07-24 15:17:00,759 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 15:17:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18214 states. [2018-07-24 15:17:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18214 to 18003. [2018-07-24 15:17:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18003 states. [2018-07-24 15:17:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18003 states to 18003 states and 26555 transitions. [2018-07-24 15:17:01,182 INFO L78 Accepts]: Start accepts. Automaton has 18003 states and 26555 transitions. Word has length 123 [2018-07-24 15:17:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:01,183 INFO L471 AbstractCegarLoop]: Abstraction has 18003 states and 26555 transitions. [2018-07-24 15:17:01,183 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:17:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18003 states and 26555 transitions. [2018-07-24 15:17:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-24 15:17:01,189 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:01,189 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, 2, 2, 2, 2, 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] [2018-07-24 15:17:01,189 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:17:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1070951850, now seen corresponding path program 1 times [2018-07-24 15:17:01,190 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:01,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:01,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:01,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:01,191 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:01,469 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:17:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:01,585 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:17:01,585 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 15:17:01,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:01,594 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:17:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:01,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:17:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:17:01,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:17:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:17:02,136 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:17:02,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 15:17:02,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:02,137 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:17:02,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:17:02,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:17:02,138 INFO L87 Difference]: Start difference. First operand 18003 states and 26555 transitions. Second operand 3 states. [2018-07-24 15:17:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:17,811 INFO L93 Difference]: Finished difference Result 41865 states and 63295 transitions. [2018-07-24 15:17:17,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:17:17,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-07-24 15:17:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:17,893 INFO L225 Difference]: With dead ends: 41865 [2018-07-24 15:17:17,894 INFO L226 Difference]: Without dead ends: 23868 [2018-07-24 15:17:17,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 387 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:17:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23868 states. [2018-07-24 15:17:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23868 to 23768. [2018-07-24 15:17:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23768 states. [2018-07-24 15:17:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23768 states to 23768 states and 33466 transitions. [2018-07-24 15:17:18,511 INFO L78 Accepts]: Start accepts. Automaton has 23768 states and 33466 transitions. Word has length 194 [2018-07-24 15:17:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:18,511 INFO L471 AbstractCegarLoop]: Abstraction has 23768 states and 33466 transitions. [2018-07-24 15:17:18,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:17:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 23768 states and 33466 transitions. [2018-07-24 15:17:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-24 15:17:18,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:18,519 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:17:18,520 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:17:18,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1281988490, now seen corresponding path program 1 times [2018-07-24 15:17:18,520 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:18,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:18,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:18,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:18,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:18,810 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:17:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:19,210 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:17:19,210 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:17:19,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:19,226 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:17:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:19,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:17:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 15:17:19,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:17:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:20,388 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:17:20,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 15:17:20,388 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:20,389 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:17:20,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:17:20,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:17:20,390 INFO L87 Difference]: Start difference. First operand 23768 states and 33466 transitions. Second operand 5 states. [2018-07-24 15:17:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:46,521 INFO L93 Difference]: Finished difference Result 62798 states and 91587 transitions. [2018-07-24 15:17:46,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:17:46,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-07-24 15:17:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:46,646 INFO L225 Difference]: With dead ends: 62798 [2018-07-24 15:17:46,646 INFO L226 Difference]: Without dead ends: 39036 [2018-07-24 15:17:46,690 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 15:17:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39036 states. [2018-07-24 15:17:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39036 to 38567. [2018-07-24 15:17:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38567 states. [2018-07-24 15:17:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38567 states to 38567 states and 53901 transitions. [2018-07-24 15:17:47,640 INFO L78 Accepts]: Start accepts. Automaton has 38567 states and 53901 transitions. Word has length 227 [2018-07-24 15:17:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:47,640 INFO L471 AbstractCegarLoop]: Abstraction has 38567 states and 53901 transitions. [2018-07-24 15:17:47,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:17:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 38567 states and 53901 transitions. [2018-07-24 15:17:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 15:17:47,662 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:47,663 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:17:47,663 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:17:47,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1891140848, now seen corresponding path program 1 times [2018-07-24 15:17:47,663 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:47,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:47,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:47,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:47,665 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:48,428 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:17:48,428 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:17:48,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:48,445 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:17:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:48,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:17:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 15:17:48,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:17:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 15:17:48,980 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:17:48,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2018-07-24 15:17:48,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:48,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:17:48,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:17:48,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:17:48,984 INFO L87 Difference]: Start difference. First operand 38567 states and 53901 transitions. Second operand 3 states. [2018-07-24 15:18:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:18:06,510 INFO L93 Difference]: Finished difference Result 110187 states and 163749 transitions. [2018-07-24 15:18:06,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:18:06,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 287 [2018-07-24 15:18:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:18:06,761 INFO L225 Difference]: With dead ends: 110187 [2018-07-24 15:18:06,761 INFO L226 Difference]: Without dead ends: 71626 [2018-07-24 15:18:06,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:18:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71626 states. [2018-07-24 15:18:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71626 to 71474. [2018-07-24 15:18:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71474 states. [2018-07-24 15:18:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71474 states to 71474 states and 104065 transitions. [2018-07-24 15:18:08,273 INFO L78 Accepts]: Start accepts. Automaton has 71474 states and 104065 transitions. Word has length 287 [2018-07-24 15:18:08,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:18:08,274 INFO L471 AbstractCegarLoop]: Abstraction has 71474 states and 104065 transitions. [2018-07-24 15:18:08,274 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:18:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 71474 states and 104065 transitions. [2018-07-24 15:18:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 15:18:08,298 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:18:08,298 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:18:08,298 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:18:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1320869042, now seen corresponding path program 1 times [2018-07-24 15:18:08,299 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:18:08,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:08,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:08,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:08,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:18:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:18:08,834 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:18:08,834 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:18:08,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:08,842 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:18:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:08,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:18:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 15:18:09,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:18:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 84 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:18:09,779 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:18:09,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2018-07-24 15:18:09,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:18:09,780 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:18:09,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:18:09,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:18:09,781 INFO L87 Difference]: Start difference. First operand 71474 states and 104065 transitions. Second operand 5 states. [2018-07-24 15:18:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:18:36,422 INFO L93 Difference]: Finished difference Result 190273 states and 299359 transitions. [2018-07-24 15:18:36,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:18:36,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2018-07-24 15:18:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:18:37,529 INFO L225 Difference]: With dead ends: 190273 [2018-07-24 15:18:37,529 INFO L226 Difference]: Without dead ends: 118805 [2018-07-24 15:18:37,667 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 572 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:18:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118805 states. [2018-07-24 15:18:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118805 to 117305. [2018-07-24 15:18:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117305 states. [2018-07-24 15:18:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117305 states to 117305 states and 175031 transitions. [2018-07-24 15:18:40,302 INFO L78 Accepts]: Start accepts. Automaton has 117305 states and 175031 transitions. Word has length 287 [2018-07-24 15:18:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:18:40,302 INFO L471 AbstractCegarLoop]: Abstraction has 117305 states and 175031 transitions. [2018-07-24 15:18:40,302 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:18:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 117305 states and 175031 transitions. [2018-07-24 15:18:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-24 15:18:40,341 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:18:40,341 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:18:40,342 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:18:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1983169474, now seen corresponding path program 1 times [2018-07-24 15:18:40,342 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:18:40,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:40,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:40,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:40,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:18:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 126 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 15:18:40,744 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:18:40,744 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 15:18:40,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:40,756 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:18:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:40,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:18:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-07-24 15:18:41,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:18:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 126 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 15:18:41,298 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:18:41,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 15:18:41,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:18:41,299 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:18:41,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:18:41,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:18:41,299 INFO L87 Difference]: Start difference. First operand 117305 states and 175031 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 15:18:51,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:18:51,866 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:18:51,872 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:18:51,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:18:51 BoogieIcfgContainer [2018-07-24 15:18:51,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:18:51,874 INFO L168 Benchmark]: Toolchain (without parser) took 229090.86 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -233.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 15:18:51,875 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:18:51,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4219.69 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 204.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.8 MB). Peak memory consumption was 487.3 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:51,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 364.31 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:51,878 INFO L168 Benchmark]: Boogie Preprocessor took 1728.92 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 852.0 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -853.9 MB). Peak memory consumption was 128.5 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:51,879 INFO L168 Benchmark]: RCFGBuilder took 22522.47 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 267.9 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 257.4 MB). Peak memory consumption was 998.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:51,880 INFO L168 Benchmark]: TraceAbstraction took 200250.56 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 613.4 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 428.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:18:51,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4219.69 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 204.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.8 MB). Peak memory consumption was 487.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 364.31 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1728.92 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 852.0 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -853.9 MB). Peak memory consumption was 128.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 22522.47 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 267.9 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 257.4 MB). Peak memory consumption was 998.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200250.56 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 613.4 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 428.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (117305states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (157855 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 200.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5879 SDtfs, 33883 SDslu, 4747 SDs, 0 SdLazy, 63741 SolverSat, 16154 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 160.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2672 GetRequests, 2606 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117305occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 2538 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 2901 NumberOfCodeBlocks, 2901 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4187 ConstructedInterpolants, 0 QuantifiedInterpolants, 2810982 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2418 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 2447/3267 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-18-51-918.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-18-51-918.csv Completed graceful shutdown