java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:43:13,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:43:13,710 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:43:13,723 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:43:13,723 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:43:13,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:43:13,729 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:43:13,730 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:43:13,732 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:43:13,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:43:13,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:43:13,734 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:43:13,735 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:43:13,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:43:13,737 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:43:13,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:43:13,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:43:13,740 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:43:13,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:43:13,744 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:43:13,745 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:43:13,746 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:43:13,749 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:43:13,749 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:43:13,749 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:43:13,750 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:43:13,751 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:43:13,752 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:43:13,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:43:13,755 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:43:13,755 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:43:13,756 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:43:13,756 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:43:13,757 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:43:13,758 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:43:13,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:43:13,763 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 [2018-09-10 11:43:13,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:43:13,787 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:43:13,788 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:43:13,788 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:43:13,788 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:43:13,788 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:43:13,789 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:43:13,789 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:43:13,789 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:43:13,789 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:43:13,791 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:43:13,792 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:43:13,792 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:43:13,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:43:13,793 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:43:13,793 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:43:13,793 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:43:13,795 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:43:13,795 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:43:13,796 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:43:13,796 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:43:13,796 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:43:13,796 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:43:13,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:43:13,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:43:13,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:43:13,797 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:43:13,797 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:43:13,797 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:43:13,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:43:13,798 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:43:13,798 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:43:13,798 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:43:13,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:43:13,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:43:13,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:43:13,896 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:43:13,897 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:43:13,898 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-09-10 11:43:14,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac01ea94/323f59454b554fc6ba0b54c8badc7f43/FLAG9d8391d18 [2018-09-10 11:43:14,702 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:43:14,704 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-09-10 11:43:14,741 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac01ea94/323f59454b554fc6ba0b54c8badc7f43/FLAG9d8391d18 [2018-09-10 11:43:14,763 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac01ea94/323f59454b554fc6ba0b54c8badc7f43 [2018-09-10 11:43:14,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:43:14,783 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:43:14,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:14,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:43:14,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:43:14,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:14" (1/1) ... [2018-09-10 11:43:14,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541f7e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:14, skipping insertion in model container [2018-09-10 11:43:14,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:14" (1/1) ... [2018-09-10 11:43:15,131 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:43:16,164 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:16,182 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:43:16,844 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:17,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17 WrapperNode [2018-09-10 11:43:17,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:17,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:17,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:43:17,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:43:17,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:17,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:17,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:17,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:43:17,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:43:17,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:43:17,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:17,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:17,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:17,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:18,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:18,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:18,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (1/1) ... [2018-09-10 11:43:18,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:43:18,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:43:18,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:43:18,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:43:18,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (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 [2018-09-10 11:43:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:43:18,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:43:18,289 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 [2018-09-10 11:43:18,289 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 [2018-09-10 11:43:18,289 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 [2018-09-10 11:43:18,289 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 [2018-09-10 11:43:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:43:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:43:18,290 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 [2018-09-10 11:43:18,290 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 [2018-09-10 11:43:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:43:18,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:43:18,292 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 [2018-09-10 11:43:18,292 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 [2018-09-10 11:43:32,437 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:43:32,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:43:32 BoogieIcfgContainer [2018-09-10 11:43:32,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:43:32,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:43:32,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:43:32,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:43:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:43:14" (1/3) ... [2018-09-10 11:43:32,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410df9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:43:32, skipping insertion in model container [2018-09-10 11:43:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:17" (2/3) ... [2018-09-10 11:43:32,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410df9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:43:32, skipping insertion in model container [2018-09-10 11:43:32,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:43:32" (3/3) ... [2018-09-10 11:43:32,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12_true-unreach-call.c [2018-09-10 11:43:32,456 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:43:32,467 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:43:32,527 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:43:32,528 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:43:32,528 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:43:32,528 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:43:32,529 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:43:32,529 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:43:32,529 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:43:32,529 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:43:32,529 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:43:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:43:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-10 11:43:32,593 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:32,595 INFO L376 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] [2018-09-10 11:43:32,596 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1080043257, now seen corresponding path program 1 times [2018-09-10 11:43:32,605 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:32,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:32,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:32,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:32,661 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:33,110 WARN L175 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:43:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:33,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:33,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:43:33,176 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:33,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:43:33,198 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:43:33,199 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:33,201 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:43:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:43,407 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:43:43,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:43:43,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-09-10 11:43:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:43,458 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:43:43,458 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:43:43,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:43:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:43:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:43:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-10 11:43:43,699 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 65 [2018-09-10 11:43:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:43,700 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-10 11:43:43,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:43:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-10 11:43:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-10 11:43:43,714 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:43,714 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:43,715 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash 162026738, now seen corresponding path program 1 times [2018-09-10 11:43:43,715 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:43,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:43,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:43,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:43,718 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:44,247 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:44,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:43:44,247 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:44,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:43:44,250 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:43:44,250 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:43:44,251 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-09-10 11:43:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:57,820 INFO L93 Difference]: Finished difference Result 4793 states and 8578 transitions. [2018-09-10 11:43:57,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:43:57,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-09-10 11:43:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:57,843 INFO L225 Difference]: With dead ends: 4793 [2018-09-10 11:43:57,843 INFO L226 Difference]: Without dead ends: 3195 [2018-09-10 11:43:57,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:43:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-09-10 11:43:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3170. [2018-09-10 11:43:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2018-09-10 11:43:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4855 transitions. [2018-09-10 11:43:57,958 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4855 transitions. Word has length 139 [2018-09-10 11:43:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:57,958 INFO L480 AbstractCegarLoop]: Abstraction has 3170 states and 4855 transitions. [2018-09-10 11:43:57,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:43:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4855 transitions. [2018-09-10 11:43:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-10 11:43:57,967 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:57,967 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:57,967 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1675169141, now seen corresponding path program 1 times [2018-09-10 11:43:57,968 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:57,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:57,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:57,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:57,970 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:58,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:58,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:43:58,177 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:58,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:43:58,178 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:43:58,178 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:43:58,178 INFO L87 Difference]: Start difference. First operand 3170 states and 4855 transitions. Second operand 6 states. [2018-09-10 11:44:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:12,225 INFO L93 Difference]: Finished difference Result 11143 states and 17389 transitions. [2018-09-10 11:44:12,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:12,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-09-10 11:44:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:12,271 INFO L225 Difference]: With dead ends: 11143 [2018-09-10 11:44:12,271 INFO L226 Difference]: Without dead ends: 7979 [2018-09-10 11:44:12,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2018-09-10 11:44:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7906. [2018-09-10 11:44:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2018-09-10 11:44:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11742 transitions. [2018-09-10 11:44:12,491 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11742 transitions. Word has length 144 [2018-09-10 11:44:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:12,491 INFO L480 AbstractCegarLoop]: Abstraction has 7906 states and 11742 transitions. [2018-09-10 11:44:12,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11742 transitions. [2018-09-10 11:44:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-10 11:44:12,495 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:12,496 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:12,496 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:12,496 INFO L82 PathProgramCache]: Analyzing trace with hash 86908565, now seen corresponding path program 1 times [2018-09-10 11:44:12,496 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:12,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:12,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:12,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:12,498 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:12,653 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:12,653 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:12,653 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:12,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:12,654 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:12,654 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:12,654 INFO L87 Difference]: Start difference. First operand 7906 states and 11742 transitions. Second operand 5 states. [2018-09-10 11:44:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:22,599 INFO L93 Difference]: Finished difference Result 24309 states and 36973 transitions. [2018-09-10 11:44:22,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:44:22,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-09-10 11:44:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:22,677 INFO L225 Difference]: With dead ends: 24309 [2018-09-10 11:44:22,677 INFO L226 Difference]: Without dead ends: 16409 [2018-09-10 11:44:22,705 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16409 states. [2018-09-10 11:44:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16409 to 16210. [2018-09-10 11:44:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16210 states. [2018-09-10 11:44:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16210 states to 16210 states and 22833 transitions. [2018-09-10 11:44:23,159 INFO L78 Accepts]: Start accepts. Automaton has 16210 states and 22833 transitions. Word has length 160 [2018-09-10 11:44:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:23,160 INFO L480 AbstractCegarLoop]: Abstraction has 16210 states and 22833 transitions. [2018-09-10 11:44:23,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:44:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 16210 states and 22833 transitions. [2018-09-10 11:44:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-09-10 11:44:23,165 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:23,166 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:23,166 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash 915126990, now seen corresponding path program 1 times [2018-09-10 11:44:23,166 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:23,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:23,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:23,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:23,168 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:23,539 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:23,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:23,539 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:23,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:23,540 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:23,540 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:23,541 INFO L87 Difference]: Start difference. First operand 16210 states and 22833 transitions. Second operand 5 states. [2018-09-10 11:44:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:44,406 INFO L93 Difference]: Finished difference Result 58959 states and 86982 transitions. [2018-09-10 11:44:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:44:44,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-09-10 11:44:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:44,584 INFO L225 Difference]: With dead ends: 58959 [2018-09-10 11:44:44,584 INFO L226 Difference]: Without dead ends: 42755 [2018-09-10 11:44:44,692 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:44:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42755 states. [2018-09-10 11:44:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42755 to 42241. [2018-09-10 11:44:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42241 states. [2018-09-10 11:44:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42241 states to 42241 states and 56585 transitions. [2018-09-10 11:44:45,901 INFO L78 Accepts]: Start accepts. Automaton has 42241 states and 56585 transitions. Word has length 169 [2018-09-10 11:44:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:45,902 INFO L480 AbstractCegarLoop]: Abstraction has 42241 states and 56585 transitions. [2018-09-10 11:44:45,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:44:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 42241 states and 56585 transitions. [2018-09-10 11:44:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-10 11:44:45,910 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:45,911 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:45,911 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:45,911 INFO L82 PathProgramCache]: Analyzing trace with hash 328890205, now seen corresponding path program 1 times [2018-09-10 11:44:45,912 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:45,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:45,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:45,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:45,915 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:46,218 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:44:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:46,684 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:46,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:44:46,684 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:46,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:44:46,685 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:44:46,685 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:46,686 INFO L87 Difference]: Start difference. First operand 42241 states and 56585 transitions. Second operand 6 states. [2018-09-10 11:44:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:59,754 INFO L93 Difference]: Finished difference Result 109994 states and 155162 transitions. [2018-09-10 11:44:59,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:59,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2018-09-10 11:44:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:00,043 INFO L225 Difference]: With dead ends: 109994 [2018-09-10 11:45:00,043 INFO L226 Difference]: Without dead ends: 67759 [2018-09-10 11:45:00,178 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:45:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67759 states. [2018-09-10 11:45:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67759 to 67370. [2018-09-10 11:45:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67370 states. [2018-09-10 11:45:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67370 states to 67370 states and 90714 transitions. [2018-09-10 11:45:01,547 INFO L78 Accepts]: Start accepts. Automaton has 67370 states and 90714 transitions. Word has length 228 [2018-09-10 11:45:01,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:01,548 INFO L480 AbstractCegarLoop]: Abstraction has 67370 states and 90714 transitions. [2018-09-10 11:45:01,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:45:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 67370 states and 90714 transitions. [2018-09-10 11:45:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-10 11:45:01,560 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:01,560 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:45:01,561 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:01,561 INFO L82 PathProgramCache]: Analyzing trace with hash -128609932, now seen corresponding path program 1 times [2018-09-10 11:45:01,561 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:01,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:01,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:01,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:01,562 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:02,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:02,907 INFO L197 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 [2018-09-10 11:45:02,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:02,929 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:03,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:03,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:03,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:03,904 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:45:03,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:03,921 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:04,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:04,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:04,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:45:04,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:45:04,597 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:45:04,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:45:04,600 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:45:04,600 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:45:04,600 INFO L87 Difference]: Start difference. First operand 67370 states and 90714 transitions. Second operand 9 states. [2018-09-10 11:45:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:30,467 INFO L93 Difference]: Finished difference Result 239754 states and 432092 transitions. [2018-09-10 11:45:30,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:45:30,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2018-09-10 11:45:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:31,486 INFO L225 Difference]: With dead ends: 239754 [2018-09-10 11:45:31,486 INFO L226 Difference]: Without dead ends: 149805 [2018-09-10 11:45:31,877 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 1064 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:45:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149805 states. [2018-09-10 11:45:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149805 to 142830. [2018-09-10 11:45:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142830 states. [2018-09-10 11:45:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142830 states to 142830 states and 199667 transitions. [2018-09-10 11:45:37,504 INFO L78 Accepts]: Start accepts. Automaton has 142830 states and 199667 transitions. Word has length 266 [2018-09-10 11:45:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:37,504 INFO L480 AbstractCegarLoop]: Abstraction has 142830 states and 199667 transitions. [2018-09-10 11:45:37,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:45:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 142830 states and 199667 transitions. [2018-09-10 11:45:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-10 11:45:37,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:37,516 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:37,516 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2111760474, now seen corresponding path program 1 times [2018-09-10 11:45:37,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:37,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:37,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:37,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:37,518 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 129 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:38,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:38,287 INFO L197 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 [2018-09-10 11:45:38,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:38,295 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:38,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-09-10 11:45:39,036 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:39,297 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-09-10 11:45:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 116 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:39,862 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:45:39,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-10 11:45:39,862 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:39,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:39,863 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:39,863 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:45:39,863 INFO L87 Difference]: Start difference. First operand 142830 states and 199667 transitions. Second operand 5 states. [2018-09-10 11:45:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:54,034 INFO L93 Difference]: Finished difference Result 306871 states and 432014 transitions. [2018-09-10 11:45:54,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 11:45:54,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2018-09-10 11:45:54,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:54,746 INFO L225 Difference]: With dead ends: 306871 [2018-09-10 11:45:54,747 INFO L226 Difference]: Without dead ends: 164067 [2018-09-10 11:45:55,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:45:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164067 states. [2018-09-10 11:45:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164067 to 160849. [2018-09-10 11:45:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160849 states. [2018-09-10 11:45:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160849 states to 160849 states and 223004 transitions. [2018-09-10 11:45:59,305 INFO L78 Accepts]: Start accepts. Automaton has 160849 states and 223004 transitions. Word has length 288 [2018-09-10 11:45:59,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:59,306 INFO L480 AbstractCegarLoop]: Abstraction has 160849 states and 223004 transitions. [2018-09-10 11:45:59,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:59,306 INFO L276 IsEmpty]: Start isEmpty. Operand 160849 states and 223004 transitions. [2018-09-10 11:45:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-09-10 11:45:59,321 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:59,322 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:45:59,322 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1948312023, now seen corresponding path program 1 times [2018-09-10 11:45:59,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:59,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:59,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:59,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:59,323 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 11:46:01,113 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:01,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:46:01,113 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:01,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:46:01,114 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:46:01,114 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:46:01,114 INFO L87 Difference]: Start difference. First operand 160849 states and 223004 transitions. Second operand 4 states. [2018-09-10 11:46:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:13,885 INFO L93 Difference]: Finished difference Result 325013 states and 468387 transitions. [2018-09-10 11:46:13,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:46:13,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2018-09-10 11:46:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:14,608 INFO L225 Difference]: With dead ends: 325013 [2018-09-10 11:46:14,608 INFO L226 Difference]: Without dead ends: 190233 [2018-09-10 11:46:21,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:46:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190233 states. [2018-09-10 11:46:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190233 to 183265. [2018-09-10 11:46:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183265 states. [2018-09-10 11:46:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183265 states to 183265 states and 246694 transitions. [2018-09-10 11:46:24,558 INFO L78 Accepts]: Start accepts. Automaton has 183265 states and 246694 transitions. Word has length 315 [2018-09-10 11:46:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:24,559 INFO L480 AbstractCegarLoop]: Abstraction has 183265 states and 246694 transitions. [2018-09-10 11:46:24,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:46:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 183265 states and 246694 transitions. [2018-09-10 11:46:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-10 11:46:24,576 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:24,576 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:46:24,576 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash 392904620, now seen corresponding path program 1 times [2018-09-10 11:46:24,577 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:24,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:24,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:24,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:24,578 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:24,897 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:46:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 117 proven. 55 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:24,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:24,995 INFO L197 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 [2018-09-10 11:46:25,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:25,006 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:25,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:46:25,311 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:46:25,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:25,508 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:46:25,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:25,526 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:25,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-10 11:46:26,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-10 11:46:27,255 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:46:27,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-10 11:46:27,256 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:27,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:46:27,257 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:46:27,257 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:46:27,258 INFO L87 Difference]: Start difference. First operand 183265 states and 246694 transitions. Second operand 5 states. [2018-09-10 11:46:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:36,804 INFO L93 Difference]: Finished difference Result 367634 states and 513759 transitions. [2018-09-10 11:46:36,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:46:36,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2018-09-10 11:46:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:37,282 INFO L225 Difference]: With dead ends: 367634 [2018-09-10 11:46:37,282 INFO L226 Difference]: Without dead ends: 184395 [2018-09-10 11:46:37,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1360 GetRequests, 1342 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:46:37,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184395 states. [2018-09-10 11:46:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184395 to 184284. [2018-09-10 11:46:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184284 states. [2018-09-10 11:46:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184284 states to 184284 states and 251641 transitions. [2018-09-10 11:46:41,284 INFO L78 Accepts]: Start accepts. Automaton has 184284 states and 251641 transitions. Word has length 338 [2018-09-10 11:46:41,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:41,285 INFO L480 AbstractCegarLoop]: Abstraction has 184284 states and 251641 transitions. [2018-09-10 11:46:41,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:46:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 184284 states and 251641 transitions. [2018-09-10 11:46:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-09-10 11:46:41,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:41,306 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:46:41,306 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1371180838, now seen corresponding path program 1 times [2018-09-10 11:46:41,306 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:41,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:41,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:41,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:41,308 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:41,646 WARN L175 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:46:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 116 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:46:42,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:42,184 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:46:42,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:42,199 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:42,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-09-10 11:46:42,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 116 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:46:43,549 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:46:43,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:46:43,550 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:43,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:46:43,552 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:46:43,552 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:46:43,552 INFO L87 Difference]: Start difference. First operand 184284 states and 251641 transitions. Second operand 5 states. [2018-09-10 11:46:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:52,741 INFO L93 Difference]: Finished difference Result 366296 states and 524731 transitions. [2018-09-10 11:46:52,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:46:52,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 384 [2018-09-10 11:46:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:53,363 INFO L225 Difference]: With dead ends: 366296 [2018-09-10 11:46:53,363 INFO L226 Difference]: Without dead ends: 182801 [2018-09-10 11:46:53,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 762 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:46:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182801 states. [2018-09-10 11:46:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182801 to 181084. [2018-09-10 11:46:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181084 states. Received shutdown request... [2018-09-10 11:46:57,490 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:46:57,496 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:46:57,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:46:57 BoogieIcfgContainer [2018-09-10 11:46:57,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:46:57,498 INFO L168 Benchmark]: Toolchain (without parser) took 222720.55 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -375.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-10 11:46:57,499 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. [2018-09-10 11:46:57,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2322.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:57,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 200.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:57,501 INFO L168 Benchmark]: Boogie Preprocessor took 904.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 923.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:57,505 INFO L168 Benchmark]: RCFGBuilder took 14225.02 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 153.1 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -139.5 MB). Peak memory consumption was 752.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:57,506 INFO L168 Benchmark]: TraceAbstraction took 205058.40 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.5 GB in the beginning and 1.8 GB in the end (delta: 675.2 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-10 11:46:57,515 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 2322.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 200.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 904.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 923.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14225.02 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 153.1 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -139.5 MB). Peak memory consumption was 752.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205058.40 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.5 GB in the beginning and 1.8 GB in the end (delta: 675.2 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while ReachableStatesComputation was computing reachable states (180719 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 204.9s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 165.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1657 SDtfs, 35165 SDslu, 1826 SDs, 0 SdLazy, 62721 SolverSat, 17256 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 120.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3875 GetRequests, 3757 SyntacticMatches, 23 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184284occurred in iteration=10, 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: 24.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 18472 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 4376 NumberOfCodeBlocks, 4376 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6233 ConstructedInterpolants, 0 QuantifiedInterpolants, 7608266 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3150 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 23 InterpolantComputations, 10 PerfectInterpolantSequences, 3532/3963 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-46-57-534.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-46-57-534.csv Completed graceful shutdown