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_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:43:17,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:43:17,795 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:43:17,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:43:17,808 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:43:17,809 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:43:17,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:43:17,812 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:43:17,816 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:43:17,817 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:43:17,818 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:43:17,818 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:43:17,819 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:43:17,820 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:43:17,821 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:43:17,822 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:43:17,823 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:43:17,825 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:43:17,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:43:17,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:43:17,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:43:17,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:43:17,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:43:17,833 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:43:17,833 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:43:17,834 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:43:17,835 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:43:17,836 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:43:17,837 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:43:17,838 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:43:17,838 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:43:17,839 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:43:17,839 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:43:17,840 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:43:17,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:43:17,841 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:43:17,842 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 11:43:17,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:43:17,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:43:17,867 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:43:17,867 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:43:17,867 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:43:17,868 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:43:17,868 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:43:17,868 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:43:17,868 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:43:17,868 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:43:17,872 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:43:17,873 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:43:17,873 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:43:17,873 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:43:17,874 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:43:17,874 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:43:17,875 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:43:17,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:43:17,875 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:43:17,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:43:17,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:43:17,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:43:17,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:43:17,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:43:17,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:43:17,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:43:17,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:43:17,879 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:43:17,879 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:43:17,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:43:17,879 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:43:17,879 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:43:17,880 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:43:17,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:43:17,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:43:17,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:43:17,974 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:43:17,975 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:43:17,976 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-09-10 11:43:18,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e8515c0/41c02969a8cf4626bc10da0528a573e1/FLAG577041cfc [2018-09-10 11:43:18,847 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:43:18,848 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-09-10 11:43:18,886 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e8515c0/41c02969a8cf4626bc10da0528a573e1/FLAG577041cfc [2018-09-10 11:43:18,910 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e8515c0/41c02969a8cf4626bc10da0528a573e1 [2018-09-10 11:43:18,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:43:18,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:43:18,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:18,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:43:18,939 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:43:18,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:18" (1/1) ... [2018-09-10 11:43:18,943 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 11:43:18, skipping insertion in model container [2018-09-10 11:43:18,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:18" (1/1) ... [2018-09-10 11:43:19,314 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:43:20,387 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:20,410 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:43:21,021 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:21,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21 WrapperNode [2018-09-10 11:43:21,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:21,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:21,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:43:21,274 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:43:21,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:21,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:21,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:21,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:43:21,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:43:21,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:43:22,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (1/1) ... [2018-09-10 11:43:22,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:43:22,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:43:22,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:43:22,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:43:22,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (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 11:43:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:43:22,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:43:22,480 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 11:43:22,481 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 11:43:22,481 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 11:43:22,481 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 11:43:22,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:43:22,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:43:22,482 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 11:43:22,482 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 11:43:22,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:43:22,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:43:22,482 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 11:43:22,483 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 11:43:35,519 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:43:35,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:43:35 BoogieIcfgContainer [2018-09-10 11:43:35,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:43:35,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:43:35,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:43:35,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:43:35,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:43:18" (1/3) ... [2018-09-10 11:43:35,525 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 11:43:35, skipping insertion in model container [2018-09-10 11:43:35,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:21" (2/3) ... [2018-09-10 11:43:35,526 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 11:43:35, skipping insertion in model container [2018-09-10 11:43:35,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:43:35" (3/3) ... [2018-09-10 11:43:35,528 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14_true-unreach-call.c [2018-09-10 11:43:35,537 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:43:35,548 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:43:35,615 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:43:35,616 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:43:35,616 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:43:35,617 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:43:35,617 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:43:35,617 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:43:35,617 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:43:35,617 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:43:35,617 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:43:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:43:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-10 11:43:35,677 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:35,678 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] [2018-09-10 11:43:35,680 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 11:43:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2068069873, now seen corresponding path program 1 times [2018-09-10 11:43:35,689 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:35,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:35,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:35,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:35,747 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:36,251 WARN L175 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:43:36,311 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 11:43:36,313 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:36,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:43:36,314 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:36,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:43:36,335 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:43:36,335 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:36,338 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:43:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:48,097 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:43:48,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:43:48,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-09-10 11:43:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:48,141 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:43:48,142 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:43:48,155 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 11:43:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:43:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:43:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:43:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-10 11:43:48,330 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 55 [2018-09-10 11:43:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:48,331 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-10 11:43:48,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:43:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-10 11:43:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-10 11:43:48,345 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:48,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:48,347 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 11:43:48,348 INFO L82 PathProgramCache]: Analyzing trace with hash 831514570, now seen corresponding path program 1 times [2018-09-10 11:43:48,348 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:48,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:48,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:48,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:48,351 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:48,710 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:48,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:43:48,711 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:48,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:43:48,713 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:43:48,713 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:43:48,714 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-09-10 11:44:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:05,498 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-09-10 11:44:05,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:05,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-09-10 11:44:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:05,527 INFO L225 Difference]: With dead ends: 6329 [2018-09-10 11:44:05,528 INFO L226 Difference]: Without dead ends: 4731 [2018-09-10 11:44:05,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-09-10 11:44:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-09-10 11:44:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-09-10 11:44:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-09-10 11:44:05,684 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 129 [2018-09-10 11:44:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:05,684 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-09-10 11:44:05,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:05,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-09-10 11:44:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-10 11:44:05,694 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:05,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:05,694 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 11:44:05,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1318894290, now seen corresponding path program 1 times [2018-09-10 11:44:05,695 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:05,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:05,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:05,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:05,696 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:44:06,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:44:06,033 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 11:44:06,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:06,043 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:44:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:06,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:44:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:44:06,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:44:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:44:07,055 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:44:07,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-10 11:44:07,055 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:07,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:44:07,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:44:07,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:44:07,060 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 4 states. [2018-09-10 11:44:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:17,885 INFO L93 Difference]: Finished difference Result 14085 states and 23071 transitions. [2018-09-10 11:44:17,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:44:17,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2018-09-10 11:44:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:17,936 INFO L225 Difference]: With dead ends: 14085 [2018-09-10 11:44:17,936 INFO L226 Difference]: Without dead ends: 9389 [2018-09-10 11:44:17,957 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 261 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:44:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2018-09-10 11:44:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9389. [2018-09-10 11:44:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9389 states. [2018-09-10 11:44:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9389 states to 9389 states and 13542 transitions. [2018-09-10 11:44:18,191 INFO L78 Accepts]: Start accepts. Automaton has 9389 states and 13542 transitions. Word has length 131 [2018-09-10 11:44:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:18,192 INFO L480 AbstractCegarLoop]: Abstraction has 9389 states and 13542 transitions. [2018-09-10 11:44:18,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:44:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 9389 states and 13542 transitions. [2018-09-10 11:44:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-10 11:44:18,196 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:18,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:18,197 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 11:44:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1718099934, now seen corresponding path program 1 times [2018-09-10 11:44:18,197 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:18,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:18,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:18,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:18,199 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:18,604 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:18,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:18,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:18,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:18,606 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:18,606 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:18,606 INFO L87 Difference]: Start difference. First operand 9389 states and 13542 transitions. Second operand 5 states. [2018-09-10 11:44:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:32,522 INFO L93 Difference]: Finished difference Result 28573 states and 42600 transitions. [2018-09-10 11:44:32,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:44:32,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-09-10 11:44:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:32,610 INFO L225 Difference]: With dead ends: 28573 [2018-09-10 11:44:32,610 INFO L226 Difference]: Without dead ends: 19190 [2018-09-10 11:44:32,646 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19190 states. [2018-09-10 11:44:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19190 to 19031. [2018-09-10 11:44:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19031 states. [2018-09-10 11:44:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19031 states to 19031 states and 26457 transitions. [2018-09-10 11:44:33,120 INFO L78 Accepts]: Start accepts. Automaton has 19031 states and 26457 transitions. Word has length 141 [2018-09-10 11:44:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:33,121 INFO L480 AbstractCegarLoop]: Abstraction has 19031 states and 26457 transitions. [2018-09-10 11:44:33,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:44:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 19031 states and 26457 transitions. [2018-09-10 11:44:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-10 11:44:33,125 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:33,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:33,125 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 11:44:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2059339287, now seen corresponding path program 1 times [2018-09-10 11:44:33,126 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:33,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:33,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:33,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:33,127 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:33,396 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:44:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:33,804 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:33,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:44:33,804 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:33,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:44:33,805 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:44:33,805 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:33,807 INFO L87 Difference]: Start difference. First operand 19031 states and 26457 transitions. Second operand 6 states. [2018-09-10 11:44:52,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:52,810 INFO L93 Difference]: Finished difference Result 63853 states and 95252 transitions. [2018-09-10 11:44:52,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:52,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-09-10 11:44:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:52,987 INFO L225 Difference]: With dead ends: 63853 [2018-09-10 11:44:52,987 INFO L226 Difference]: Without dead ends: 44828 [2018-09-10 11:44:53,088 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44828 states. [2018-09-10 11:44:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44828 to 44577. [2018-09-10 11:44:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44577 states. [2018-09-10 11:44:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44577 states to 44577 states and 63165 transitions. [2018-09-10 11:44:54,550 INFO L78 Accepts]: Start accepts. Automaton has 44577 states and 63165 transitions. Word has length 164 [2018-09-10 11:44:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:54,551 INFO L480 AbstractCegarLoop]: Abstraction has 44577 states and 63165 transitions. [2018-09-10 11:44:54,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 44577 states and 63165 transitions. [2018-09-10 11:44:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-10 11:44:54,557 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:54,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:54,557 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 11:44:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash 825361601, now seen corresponding path program 1 times [2018-09-10 11:44:54,558 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:54,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:54,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:54,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:54,560 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:54,840 WARN L175 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:44:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:55,224 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:55,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:44:55,225 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:55,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:44:55,226 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:44:55,226 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:55,226 INFO L87 Difference]: Start difference. First operand 44577 states and 63165 transitions. Second operand 6 states. [2018-09-10 11:45:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:05,561 INFO L93 Difference]: Finished difference Result 100951 states and 151538 transitions. [2018-09-10 11:45:05,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:45:05,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-09-10 11:45:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:05,760 INFO L225 Difference]: With dead ends: 100951 [2018-09-10 11:45:05,760 INFO L226 Difference]: Without dead ends: 56380 [2018-09-10 11:45:06,302 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 11:45:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56380 states. [2018-09-10 11:45:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56380 to 56018. [2018-09-10 11:45:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56018 states. [2018-09-10 11:45:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56018 states to 56018 states and 78667 transitions. [2018-09-10 11:45:07,316 INFO L78 Accepts]: Start accepts. Automaton has 56018 states and 78667 transitions. Word has length 176 [2018-09-10 11:45:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:07,317 INFO L480 AbstractCegarLoop]: Abstraction has 56018 states and 78667 transitions. [2018-09-10 11:45:07,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:45:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 56018 states and 78667 transitions. [2018-09-10 11:45:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-09-10 11:45:07,336 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:07,337 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, 2, 2, 2, 2, 2, 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] [2018-09-10 11:45:07,337 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 11:45:07,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1488320359, now seen corresponding path program 1 times [2018-09-10 11:45:07,338 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:07,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:07,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:07,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:07,339 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:07,661 WARN L175 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:08,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:08,128 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 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 [2018-09-10 11:45:08,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:08,144 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:08,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 11:45:08,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:09,003 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:45:09,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:45:09,003 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:09,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:09,004 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:09,004 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:45:09,005 INFO L87 Difference]: Start difference. First operand 56018 states and 78667 transitions. Second operand 5 states. [2018-09-10 11:45:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:22,956 INFO L93 Difference]: Finished difference Result 142025 states and 213396 transitions. [2018-09-10 11:45:22,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:45:22,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2018-09-10 11:45:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:23,312 INFO L225 Difference]: With dead ends: 142025 [2018-09-10 11:45:23,312 INFO L226 Difference]: Without dead ends: 86013 [2018-09-10 11:45:23,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 564 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:45:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86013 states. [2018-09-10 11:45:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86013 to 85730. [2018-09-10 11:45:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85730 states. [2018-09-10 11:45:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85730 states to 85730 states and 120603 transitions. [2018-09-10 11:45:25,754 INFO L78 Accepts]: Start accepts. Automaton has 85730 states and 120603 transitions. Word has length 285 [2018-09-10 11:45:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:25,755 INFO L480 AbstractCegarLoop]: Abstraction has 85730 states and 120603 transitions. [2018-09-10 11:45:25,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 85730 states and 120603 transitions. [2018-09-10 11:45:25,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-10 11:45:25,775 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:25,776 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:45:25,776 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 11:45:25,776 INFO L82 PathProgramCache]: Analyzing trace with hash 976704035, now seen corresponding path program 1 times [2018-09-10 11:45:25,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:25,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:25,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:25,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:25,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:26,108 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 97 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:45:26,188 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:26,188 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 11:45:26,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:26,198 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:26,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:26,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:26,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:26,767 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:45:26,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:26,782 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:27,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-10 11:45:27,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-10 11:45:27,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:45:27,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-10 11:45:27,475 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:27,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:27,476 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:27,476 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:45:27,478 INFO L87 Difference]: Start difference. First operand 85730 states and 120603 transitions. Second operand 5 states. [2018-09-10 11:45:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:35,733 INFO L93 Difference]: Finished difference Result 188885 states and 271962 transitions. [2018-09-10 11:45:35,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:45:35,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2018-09-10 11:45:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:36,108 INFO L225 Difference]: With dead ends: 188885 [2018-09-10 11:45:36,109 INFO L226 Difference]: Without dead ends: 103161 [2018-09-10 11:45:36,253 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1186 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:45:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103161 states. [2018-09-10 11:45:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103161 to 103125. [2018-09-10 11:45:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103125 states. [2018-09-10 11:45:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103125 states to 103125 states and 142003 transitions. [2018-09-10 11:45:38,525 INFO L78 Accepts]: Start accepts. Automaton has 103125 states and 142003 transitions. Word has length 299 [2018-09-10 11:45:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:38,526 INFO L480 AbstractCegarLoop]: Abstraction has 103125 states and 142003 transitions. [2018-09-10 11:45:38,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 103125 states and 142003 transitions. [2018-09-10 11:45:38,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-10 11:45:38,544 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:38,544 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:45:38,544 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 11:45:38,545 INFO L82 PathProgramCache]: Analyzing trace with hash -244989942, now seen corresponding path program 1 times [2018-09-10 11:45:38,545 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:38,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:38,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:38,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:38,546 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 147 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:38,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:38,959 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 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 [2018-09-10 11:45:38,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:38,976 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:39,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:45:39,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:45:39,725 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:45:39,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-10 11:45:39,726 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:39,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:45:39,726 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:45:39,726 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:39,727 INFO L87 Difference]: Start difference. First operand 103125 states and 142003 transitions. Second operand 3 states. [2018-09-10 11:45:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:47,405 INFO L93 Difference]: Finished difference Result 206244 states and 284990 transitions. [2018-09-10 11:45:47,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:45:47,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2018-09-10 11:45:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:47,720 INFO L225 Difference]: With dead ends: 206244 [2018-09-10 11:45:47,721 INFO L226 Difference]: Without dead ends: 103125 [2018-09-10 11:45:47,888 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 612 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103125 states. [2018-09-10 11:45:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103125 to 103103. [2018-09-10 11:45:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103103 states. [2018-09-10 11:45:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103103 states to 103103 states and 130762 transitions. [2018-09-10 11:45:49,229 INFO L78 Accepts]: Start accepts. Automaton has 103103 states and 130762 transitions. Word has length 306 [2018-09-10 11:45:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:49,230 INFO L480 AbstractCegarLoop]: Abstraction has 103103 states and 130762 transitions. [2018-09-10 11:45:49,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:45:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 103103 states and 130762 transitions. [2018-09-10 11:45:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-09-10 11:45:49,254 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:49,254 INFO L376 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, 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, 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] [2018-09-10 11:45:49,255 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 11:45:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1126736596, now seen corresponding path program 1 times [2018-09-10 11:45:49,255 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:49,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:49,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:49,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:49,256 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:45:49,659 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:49,659 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 11:45:49,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:49,668 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:49,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:45:50,002 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:45:51,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:51,223 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:45:51,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:51,241 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:51,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:45:51,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:45:51,981 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:45:51,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:45:51,982 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:45:51,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:45:51,983 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:45:51,983 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:45:51,983 INFO L87 Difference]: Start difference. First operand 103103 states and 130762 transitions. Second operand 9 states. [2018-09-10 11:46:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:09,088 INFO L93 Difference]: Finished difference Result 274960 states and 387664 transitions. [2018-09-10 11:46:09,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 11:46:09,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2018-09-10 11:46:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:09,676 INFO L225 Difference]: With dead ends: 274960 [2018-09-10 11:46:09,676 INFO L226 Difference]: Without dead ends: 171863 [2018-09-10 11:46:09,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1510 GetRequests, 1488 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:46:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171863 states. [2018-09-10 11:46:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171863 to 171577. [2018-09-10 11:46:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171577 states. [2018-09-10 11:46:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171577 states to 171577 states and 225812 transitions. [2018-09-10 11:46:16,808 INFO L78 Accepts]: Start accepts. Automaton has 171577 states and 225812 transitions. Word has length 373 [2018-09-10 11:46:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:16,809 INFO L480 AbstractCegarLoop]: Abstraction has 171577 states and 225812 transitions. [2018-09-10 11:46:16,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:46:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 171577 states and 225812 transitions. [2018-09-10 11:46:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-10 11:46:16,839 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:16,840 INFO L376 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:46:16,840 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 11:46:16,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2003941926, now seen corresponding path program 1 times [2018-09-10 11:46:16,840 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:16,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:16,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:16,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:16,841 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 223 proven. 120 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:46:17,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:17,446 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:46:17,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:17,458 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:17,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 11:46:17,727 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 223 proven. 120 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:46:17,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:17,953 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:46:17,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:17,971 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:18,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 11:46:18,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 223 proven. 120 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:46:19,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:46:19,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:46:19,165 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:46:19,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:46:19,167 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:46:19,167 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:46:19,167 INFO L87 Difference]: Start difference. First operand 171577 states and 225812 transitions. Second operand 9 states. [2018-09-10 11:46:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:38,907 INFO L93 Difference]: Finished difference Result 356927 states and 553969 transitions. [2018-09-10 11:46:38,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:46:38,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 377 [2018-09-10 11:46:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:39,783 INFO L225 Difference]: With dead ends: 356927 [2018-09-10 11:46:39,783 INFO L226 Difference]: Without dead ends: 179141 [2018-09-10 11:46:40,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1509 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:46:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179141 states. [2018-09-10 11:46:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179141 to 175384. [2018-09-10 11:46:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175384 states. [2018-09-10 11:46:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175384 states to 175384 states and 250912 transitions. [2018-09-10 11:46:45,551 INFO L78 Accepts]: Start accepts. Automaton has 175384 states and 250912 transitions. Word has length 377 [2018-09-10 11:46:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:45,552 INFO L480 AbstractCegarLoop]: Abstraction has 175384 states and 250912 transitions. [2018-09-10 11:46:45,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:46:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 175384 states and 250912 transitions. [2018-09-10 11:46:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-09-10 11:46:45,596 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:45,597 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:45,597 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash -811092279, now seen corresponding path program 1 times [2018-09-10 11:46:45,598 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:45,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:45,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:45,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:45,599 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-10 11:46:45,932 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:45,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:46:45,933 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:45,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:46:45,933 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:46:45,933 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:45,934 INFO L87 Difference]: Start difference. First operand 175384 states and 250912 transitions. Second operand 3 states. [2018-09-10 11:46:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:55,769 INFO L93 Difference]: Finished difference Result 376747 states and 553622 transitions. [2018-09-10 11:46:55,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:46:55,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 425 [2018-09-10 11:46:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:56,552 INFO L225 Difference]: With dead ends: 376747 [2018-09-10 11:46:56,552 INFO L226 Difference]: Without dead ends: 201374 [2018-09-10 11:46:57,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201374 states. [2018-09-10 11:47:01,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201374 to 195872. [2018-09-10 11:47:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195872 states. [2018-09-10 11:47:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195872 states to 195872 states and 277287 transitions. [2018-09-10 11:47:02,204 INFO L78 Accepts]: Start accepts. Automaton has 195872 states and 277287 transitions. Word has length 425 [2018-09-10 11:47:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:02,205 INFO L480 AbstractCegarLoop]: Abstraction has 195872 states and 277287 transitions. [2018-09-10 11:47:02,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:47:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 195872 states and 277287 transitions. [2018-09-10 11:47:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2018-09-10 11:47:02,764 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:02,765 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:02,765 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:02,766 INFO L82 PathProgramCache]: Analyzing trace with hash 415224106, now seen corresponding path program 1 times [2018-09-10 11:47:02,766 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:02,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:02,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:02,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:02,767 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:03,244 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-09-10 11:47:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 192 proven. 350 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-10 11:47:09,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:09,231 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:47:09,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:09,239 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:09,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:09,659 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 11:47:09,861 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:47:09,861 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:47:09,867 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:47:09,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:47:09 BoogieIcfgContainer [2018-09-10 11:47:09,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:47:09,868 INFO L168 Benchmark]: Toolchain (without parser) took 230942.97 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-10 11:47:09,869 INFO L168 Benchmark]: CDTParser took 0.19 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 11:47:09,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2342.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:09,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:09,871 INFO L168 Benchmark]: Boogie Preprocessor took 864.14 ms. Allocated memory was 1.5 GB in the beginning and 2.5 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 11:47:09,872 INFO L168 Benchmark]: RCFGBuilder took 13121.14 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 159.9 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -145.0 MB). Peak memory consumption was 753.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:09,873 INFO L168 Benchmark]: TraceAbstraction took 214346.82 ms. Allocated memory was 2.6 GB in the beginning and 5.6 GB in the end (delta: 2.9 GB). Free memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-10 11:47:09,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2342.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 864.14 ms. Allocated memory was 1.5 GB in the beginning and 2.5 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 13121.14 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 159.9 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -145.0 MB). Peak memory consumption was 753.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214346.82 ms. Allocated memory was 2.6 GB in the beginning and 5.6 GB in the end (delta: 2.9 GB). Free memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was analyzing trace of length 1113 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 214.2s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 165.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4004 SDtfs, 34958 SDslu, 1942 SDs, 0 SdLazy, 63565 SolverSat, 16779 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 123.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5760 GetRequests, 5635 SyntacticMatches, 31 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195872occurred in iteration=12, 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: 26.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 10687 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 5681 NumberOfCodeBlocks, 5681 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 8471 ConstructedInterpolants, 0 QuantifiedInterpolants, 6882139 SizeOfPredicates, 9 NumberOfNonLiveVariables, 4863 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 30 InterpolantComputations, 11 PerfectInterpolantSequences, 5957/6630 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_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-47-09-902.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-47-09-902.csv Completed graceful shutdown