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_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:19:22,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:19:22,760 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:19:22,776 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:19:22,776 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:19:22,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:19:22,778 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:19:22,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:19:22,782 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:19:22,783 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:19:22,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:19:22,784 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:19:22,785 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:19:22,786 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:19:22,787 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:19:22,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:19:22,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:19:22,790 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:19:22,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:19:22,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:19:22,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:19:22,796 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:19:22,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:19:22,799 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:19:22,799 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:19:22,800 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:19:22,801 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:19:22,802 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:19:22,803 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:19:22,804 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:19:22,804 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:19:22,805 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:19:22,805 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:19:22,805 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:19:22,806 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:19:22,807 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:19:22,808 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 [2018-08-07 12:19:22,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:19:22,829 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:19:22,830 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:19:22,830 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:19:22,830 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:19:22,830 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:19:22,831 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:19:22,832 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:19:22,832 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:19:22,832 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:19:22,832 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:19:22,833 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:19:22,833 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:19:22,833 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:19:22,834 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:19:22,835 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:19:22,835 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:19:22,835 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:19:22,835 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:19:22,835 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:19:22,836 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:19:22,836 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:19:22,836 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:19:22,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:19:22,838 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:19:22,838 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:19:22,838 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:19:22,838 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:19:22,838 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:19:22,839 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:19:22,839 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:19:22,839 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:19:22,839 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:19:22,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:19:22,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:19:22,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:19:22,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:19:22,914 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:19:22,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c [2018-08-07 12:19:23,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed379b8a/148d261ad516410eb9a27c2fcee2690b/FLAG05be37dbe [2018-08-07 12:19:23,761 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:19:23,762 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c [2018-08-07 12:19:23,803 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed379b8a/148d261ad516410eb9a27c2fcee2690b/FLAG05be37dbe [2018-08-07 12:19:23,828 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed379b8a/148d261ad516410eb9a27c2fcee2690b [2018-08-07 12:19:23,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:19:23,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:19:23,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:19:23,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:19:23,856 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:19:23,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:19:23" (1/1) ... [2018-08-07 12:19:23,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3094c3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:23, skipping insertion in model container [2018-08-07 12:19:23,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:19:23" (1/1) ... [2018-08-07 12:19:24,198 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:19:25,343 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:19:25,359 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:19:26,009 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:19:26,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26 WrapperNode [2018-08-07 12:19:26,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:19:26,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:19:26,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:19:26,285 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:19:26,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:26,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:26,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:19:26,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:19:26,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:19:26,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:19:27,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (1/1) ... [2018-08-07 12:19:27,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:19:27,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:19:27,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:19:27,471 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:19:27,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (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 [2018-08-07 12:19:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:19:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:19:27,550 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 [2018-08-07 12:19:27,551 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 [2018-08-07 12:19:27,551 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 [2018-08-07 12:19:27,551 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 [2018-08-07 12:19:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:19:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:19:27,552 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 [2018-08-07 12:19:27,552 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 [2018-08-07 12:19:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:19:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:19:27,553 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 [2018-08-07 12:19:27,553 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 [2018-08-07 12:19:37,736 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:19:37,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:19:37 BoogieIcfgContainer [2018-08-07 12:19:37,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:19:37,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:19:37,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:19:37,741 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:19:37,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:19:23" (1/3) ... [2018-08-07 12:19:37,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4721888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:19:37, skipping insertion in model container [2018-08-07 12:19:37,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:19:26" (2/3) ... [2018-08-07 12:19:37,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4721888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:19:37, skipping insertion in model container [2018-08-07 12:19:37,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:19:37" (3/3) ... [2018-08-07 12:19:37,745 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label11_true-unreach-call.c [2018-08-07 12:19:37,755 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:19:37,765 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:19:37,992 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:19:37,994 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:19:37,994 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:19:37,994 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:19:37,994 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:19:37,994 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:19:37,994 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:19:37,994 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:19:37,995 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:19:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-08-07 12:19:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-08-07 12:19:38,061 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:19:38,062 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] [2018-08-07 12:19:38,064 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]=== [2018-08-07 12:19:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1346097412, now seen corresponding path program 1 times [2018-08-07 12:19:38,071 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:19:38,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:19:38,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:19:38,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:19:38,128 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:19:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:19:38,529 WARN L170 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:19:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:19:38,668 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:19:38,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 12:19:38,669 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:19:38,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:19:38,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:19:38,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:19:38,697 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-08-07 12:19:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:19:49,065 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-08-07 12:19:49,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:19:49,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-08-07 12:19:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:19:49,120 INFO L225 Difference]: With dead ends: 2446 [2018-08-07 12:19:49,120 INFO L226 Difference]: Without dead ends: 1604 [2018-08-07 12:19:49,137 INFO L603 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 [2018-08-07 12:19:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-08-07 12:19:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-08-07 12:19:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-08-07 12:19:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-08-07 12:19:49,345 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 46 [2018-08-07 12:19:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:19:49,346 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-08-07 12:19:49,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:19:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-08-07 12:19:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-08-07 12:19:49,355 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:19:49,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:19:49,356 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]=== [2018-08-07 12:19:49,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1356762090, now seen corresponding path program 1 times [2018-08-07 12:19:49,357 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:19:49,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:19:49,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:19:49,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:19:49,358 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:19:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:19:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:19:49,727 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:19:49,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:19:49,728 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:19:49,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:19:49,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:19:49,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:19:49,731 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-08-07 12:20:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:20:07,055 INFO L93 Difference]: Finished difference Result 4793 states and 8579 transitions. [2018-08-07 12:20:07,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:20:07,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-08-07 12:20:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:20:07,075 INFO L225 Difference]: With dead ends: 4793 [2018-08-07 12:20:07,075 INFO L226 Difference]: Without dead ends: 3195 [2018-08-07 12:20:07,082 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:20:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-08-07 12:20:07,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2018-08-07 12:20:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2018-08-07 12:20:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4866 transitions. [2018-08-07 12:20:07,171 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4866 transitions. Word has length 120 [2018-08-07 12:20:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:20:07,172 INFO L480 AbstractCegarLoop]: Abstraction has 3176 states and 4866 transitions. [2018-08-07 12:20:07,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:20:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4866 transitions. [2018-08-07 12:20:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-08-07 12:20:07,176 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:20:07,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:20:07,177 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]=== [2018-08-07 12:20:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1503501527, now seen corresponding path program 1 times [2018-08-07 12:20:07,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:20:07,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:07,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:20:07,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:07,179 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:20:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:20:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:20:07,423 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:20:07,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:20:07,423 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:20:07,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:20:07,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:20:07,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:20:07,424 INFO L87 Difference]: Start difference. First operand 3176 states and 4866 transitions. Second operand 6 states. [2018-08-07 12:20:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:20:20,267 INFO L93 Difference]: Finished difference Result 11176 states and 17452 transitions. [2018-08-07 12:20:20,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:20:20,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-08-07 12:20:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:20:20,314 INFO L225 Difference]: With dead ends: 11176 [2018-08-07 12:20:20,315 INFO L226 Difference]: Without dead ends: 8006 [2018-08-07 12:20:20,332 INFO L603 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 [2018-08-07 12:20:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8006 states. [2018-08-07 12:20:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8006 to 7933. [2018-08-07 12:20:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7933 states. [2018-08-07 12:20:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7933 states to 7933 states and 11790 transitions. [2018-08-07 12:20:20,537 INFO L78 Accepts]: Start accepts. Automaton has 7933 states and 11790 transitions. Word has length 125 [2018-08-07 12:20:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:20:20,538 INFO L480 AbstractCegarLoop]: Abstraction has 7933 states and 11790 transitions. [2018-08-07 12:20:20,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:20:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7933 states and 11790 transitions. [2018-08-07 12:20:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-08-07 12:20:20,542 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:20:20,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:20:20,543 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]=== [2018-08-07 12:20:20,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1544897545, now seen corresponding path program 1 times [2018-08-07 12:20:20,543 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:20:20,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:20,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:20:20,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:20,544 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:20:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:20:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:20:20,918 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:20:20,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:20:20,919 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:20:20,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:20:20,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:20:20,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:20:20,920 INFO L87 Difference]: Start difference. First operand 7933 states and 11790 transitions. Second operand 5 states. [2018-08-07 12:20:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:20:30,746 INFO L93 Difference]: Finished difference Result 24418 states and 37210 transitions. [2018-08-07 12:20:30,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:20:30,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-08-07 12:20:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:20:30,833 INFO L225 Difference]: With dead ends: 24418 [2018-08-07 12:20:30,834 INFO L226 Difference]: Without dead ends: 16491 [2018-08-07 12:20:30,858 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:20:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16491 states. [2018-08-07 12:20:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16491 to 16262. [2018-08-07 12:20:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16262 states. [2018-08-07 12:20:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16262 states to 16262 states and 22930 transitions. [2018-08-07 12:20:31,305 INFO L78 Accepts]: Start accepts. Automaton has 16262 states and 22930 transitions. Word has length 141 [2018-08-07 12:20:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:20:31,306 INFO L480 AbstractCegarLoop]: Abstraction has 16262 states and 22930 transitions. [2018-08-07 12:20:31,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:20:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16262 states and 22930 transitions. [2018-08-07 12:20:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-08-07 12:20:31,309 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:20:31,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:20:31,310 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]=== [2018-08-07 12:20:31,310 INFO L82 PathProgramCache]: Analyzing trace with hash 614818638, now seen corresponding path program 1 times [2018-08-07 12:20:31,310 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:20:31,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:31,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:20:31,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:31,312 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:20:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:20:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:20:31,617 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:20:31,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:20:31,617 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:20:31,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:20:31,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:20:31,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:20:31,619 INFO L87 Difference]: Start difference. First operand 16262 states and 22930 transitions. Second operand 5 states. [2018-08-07 12:20:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:20:54,637 INFO L93 Difference]: Finished difference Result 59065 states and 87193 transitions. [2018-08-07 12:20:54,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:20:54,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-08-07 12:20:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:20:54,789 INFO L225 Difference]: With dead ends: 59065 [2018-08-07 12:20:54,789 INFO L226 Difference]: Without dead ends: 42809 [2018-08-07 12:20:54,866 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:20:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42809 states. [2018-08-07 12:20:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42809 to 42296. [2018-08-07 12:20:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42296 states. [2018-08-07 12:20:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42296 states to 42296 states and 56693 transitions. [2018-08-07 12:20:56,169 INFO L78 Accepts]: Start accepts. Automaton has 42296 states and 56693 transitions. Word has length 150 [2018-08-07 12:20:56,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:20:56,170 INFO L480 AbstractCegarLoop]: Abstraction has 42296 states and 56693 transitions. [2018-08-07 12:20:56,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:20:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 42296 states and 56693 transitions. [2018-08-07 12:20:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-08-07 12:20:56,177 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:20:56,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:20:56,177 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]=== [2018-08-07 12:20:56,178 INFO L82 PathProgramCache]: Analyzing trace with hash -717140031, now seen corresponding path program 1 times [2018-08-07 12:20:56,178 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:20:56,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:56,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:20:56,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:20:56,179 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:20:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:20:56,484 WARN L170 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:20:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:20:56,920 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:20:56,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:20:56,920 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:20:56,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:20:56,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:20:56,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:20:56,922 INFO L87 Difference]: Start difference. First operand 42296 states and 56693 transitions. Second operand 6 states. [2018-08-07 12:21:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:21:13,616 INFO L93 Difference]: Finished difference Result 110128 states and 155457 transitions. [2018-08-07 12:21:13,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:21:13,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-08-07 12:21:13,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:21:13,824 INFO L225 Difference]: With dead ends: 110128 [2018-08-07 12:21:13,825 INFO L226 Difference]: Without dead ends: 67838 [2018-08-07 12:21:13,942 INFO L603 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 [2018-08-07 12:21:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67838 states. [2018-08-07 12:21:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67838 to 67449. [2018-08-07 12:21:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67449 states. [2018-08-07 12:21:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67449 states to 67449 states and 90922 transitions. [2018-08-07 12:21:15,194 INFO L78 Accepts]: Start accepts. Automaton has 67449 states and 90922 transitions. Word has length 209 [2018-08-07 12:21:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:21:15,195 INFO L480 AbstractCegarLoop]: Abstraction has 67449 states and 90922 transitions. [2018-08-07 12:21:15,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:21:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 67449 states and 90922 transitions. [2018-08-07 12:21:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-08-07 12:21:15,227 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:21:15,227 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:21:15,227 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]=== [2018-08-07 12:21:15,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2076269773, now seen corresponding path program 1 times [2018-08-07 12:21:15,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:21:15,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:21:15,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:15,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:21:15,230 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:21:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:15,609 WARN L170 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:21:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 79 proven. 55 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-08-07 12:21:15,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:21:15,861 INFO L194 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 [2018-08-07 12:21:15,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:15,876 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:21:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:16,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:21:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:16,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:21:16,766 WARN L170 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 12:21:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:18,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:21:18,085 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:21:18,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:18,101 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:21:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:18,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:21:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-08-07 12:21:18,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:21:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-08-07 12:21:19,354 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 12:21:19,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-08-07 12:21:19,354 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:21:19,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:21:19,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:21:19,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:21:19,357 INFO L87 Difference]: Start difference. First operand 67449 states and 90922 transitions. Second operand 5 states. [2018-08-07 12:21:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:21:28,994 INFO L93 Difference]: Finished difference Result 156866 states and 222624 transitions. [2018-08-07 12:21:28,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:21:28,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2018-08-07 12:21:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:21:29,473 INFO L225 Difference]: With dead ends: 156866 [2018-08-07 12:21:29,473 INFO L226 Difference]: Without dead ends: 89423 [2018-08-07 12:21:29,651 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1266 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:21:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89423 states. [2018-08-07 12:21:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89423 to 89358. [2018-08-07 12:21:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89358 states. [2018-08-07 12:21:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89358 states to 89358 states and 122765 transitions. [2018-08-07 12:21:31,947 INFO L78 Accepts]: Start accepts. Automaton has 89358 states and 122765 transitions. Word has length 319 [2018-08-07 12:21:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:21:31,948 INFO L480 AbstractCegarLoop]: Abstraction has 89358 states and 122765 transitions. [2018-08-07 12:21:31,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:21:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 89358 states and 122765 transitions. [2018-08-07 12:21:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-08-07 12:21:31,974 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:21:31,975 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:21:31,975 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]=== [2018-08-07 12:21:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash -64576336, now seen corresponding path program 1 times [2018-08-07 12:21:31,976 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:21:31,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:21:31,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:31,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:21:31,978 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:21:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:32,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:21:32,661 INFO L194 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 [2018-08-07 12:21:32,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:32,677 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:21:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:32,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:21:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:33,246 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:21:33,493 WARN L170 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 12:21:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:33,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:21:33,908 INFO L194 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 [2018-08-07 12:21:33,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:33,925 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:21:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:34,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:21:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:34,358 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:21:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:35,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:21:35,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-08-07 12:21:35,155 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:21:35,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:21:35,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:21:35,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:21:35,157 INFO L87 Difference]: Start difference. First operand 89358 states and 122765 transitions. Second operand 9 states. [2018-08-07 12:21:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:21:50,628 INFO L93 Difference]: Finished difference Result 198161 states and 298134 transitions. [2018-08-07 12:21:50,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-08-07 12:21:50,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2018-08-07 12:21:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:21:51,185 INFO L225 Difference]: With dead ends: 198161 [2018-08-07 12:21:51,185 INFO L226 Difference]: Without dead ends: 108809 [2018-08-07 12:21:51,338 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1283 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-08-07 12:21:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108809 states. [2018-08-07 12:21:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108809 to 108346. [2018-08-07 12:21:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108346 states. [2018-08-07 12:21:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108346 states to 108346 states and 155003 transitions. [2018-08-07 12:21:53,798 INFO L78 Accepts]: Start accepts. Automaton has 108346 states and 155003 transitions. Word has length 322 [2018-08-07 12:21:53,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:21:53,799 INFO L480 AbstractCegarLoop]: Abstraction has 108346 states and 155003 transitions. [2018-08-07 12:21:53,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:21:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 108346 states and 155003 transitions. [2018-08-07 12:21:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-08-07 12:21:53,833 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:21:53,834 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:21:53,834 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]=== [2018-08-07 12:21:53,834 INFO L82 PathProgramCache]: Analyzing trace with hash -252339189, now seen corresponding path program 1 times [2018-08-07 12:21:53,835 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:21:53,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:21:53,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:53,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:21:53,836 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:21:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:54,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:21:54,577 INFO L194 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 [2018-08-07 12:21:54,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:54,593 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:21:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:54,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:21:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:55,824 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:21:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:56,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:21:56,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:21:56,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:21:56,092 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:21:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:21:56,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:21:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:56,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:21:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:21:56,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:21:56,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-08-07 12:21:56,866 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:21:56,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:21:56,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:21:56,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:21:56,867 INFO L87 Difference]: Start difference. First operand 108346 states and 155003 transitions. Second operand 9 states. [2018-08-07 12:22:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:22:14,233 INFO L93 Difference]: Finished difference Result 308976 states and 603530 transitions. [2018-08-07 12:22:14,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-08-07 12:22:14,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 327 [2018-08-07 12:22:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:22:15,013 INFO L225 Difference]: With dead ends: 308976 [2018-08-07 12:22:15,014 INFO L226 Difference]: Without dead ends: 167106 [2018-08-07 12:22:15,462 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1304 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-08-07 12:22:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167106 states. [2018-08-07 12:22:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167106 to 162063. [2018-08-07 12:22:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162063 states. [2018-08-07 12:22:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162063 states to 162063 states and 258910 transitions. [2018-08-07 12:22:21,286 INFO L78 Accepts]: Start accepts. Automaton has 162063 states and 258910 transitions. Word has length 327 [2018-08-07 12:22:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:22:21,286 INFO L480 AbstractCegarLoop]: Abstraction has 162063 states and 258910 transitions. [2018-08-07 12:22:21,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:22:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 162063 states and 258910 transitions. [2018-08-07 12:22:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-08-07 12:22:21,310 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:22:21,311 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:22:21,311 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]=== [2018-08-07 12:22:21,311 INFO L82 PathProgramCache]: Analyzing trace with hash 608203649, now seen corresponding path program 1 times [2018-08-07 12:22:21,311 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:22:21,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:22:21,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:22:21,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:22:21,313 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:22:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:22:21,650 WARN L170 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:22:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 123 proven. 139 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-08-07 12:22:22,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:22:22,769 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:22:22,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:22:22,777 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:22:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:22:22,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:22:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-08-07 12:22:23,472 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:22:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 199 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-08-07 12:22:24,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:22:24,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:22:24,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:22:24,295 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:22:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:22:24,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:22:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-08-07 12:22:24,667 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:22:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 125 proven. 130 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-08-07 12:22:24,883 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 12:22:24,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-08-07 12:22:24,884 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:22:24,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:22:24,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:22:24,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:22:24,885 INFO L87 Difference]: Start difference. First operand 162063 states and 258910 transitions. Second operand 5 states. [2018-08-07 12:22:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:22:44,290 INFO L93 Difference]: Finished difference Result 355921 states and 616651 transitions. [2018-08-07 12:22:44,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:22:44,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2018-08-07 12:22:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:22:45,014 INFO L225 Difference]: With dead ends: 355921 [2018-08-07 12:22:45,014 INFO L226 Difference]: Without dead ends: 193869 [2018-08-07 12:22:45,517 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1353 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-08-07 12:22:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193869 states. [2018-08-07 12:22:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193869 to 189859. [2018-08-07 12:22:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189859 states. [2018-08-07 12:22:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189859 states to 189859 states and 281864 transitions. [2018-08-07 12:22:51,143 INFO L78 Accepts]: Start accepts. Automaton has 189859 states and 281864 transitions. Word has length 341 [2018-08-07 12:22:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:22:51,143 INFO L480 AbstractCegarLoop]: Abstraction has 189859 states and 281864 transitions. [2018-08-07 12:22:51,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:22:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 189859 states and 281864 transitions. [2018-08-07 12:22:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-08-07 12:22:51,158 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:22:51,159 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 12:22:51,159 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]=== [2018-08-07 12:22:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash 587197066, now seen corresponding path program 1 times [2018-08-07 12:22:51,159 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:22:51,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:22:51,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:22:51,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:22:51,161 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:22:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:22:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-08-07 12:22:51,575 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:22:51,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:22:51,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:22:51,585 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:22:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:22:51,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:22:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-08-07 12:22:51,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:22:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-08-07 12:22:52,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:22:52,071 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:22:52,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:22:52,087 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:22:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:22:52,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:22:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-08-07 12:22:53,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:22:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-08-07 12:22:53,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:22:53,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-08-07 12:22:53,602 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:22:53,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:22:53,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:22:53,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:22:53,603 INFO L87 Difference]: Start difference. First operand 189859 states and 281864 transitions. Second operand 9 states. Received shutdown request... [2018-08-07 12:23:08,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-08-07 12:23:08,141 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:23:08,149 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:23:08,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:23:08 BoogieIcfgContainer [2018-08-07 12:23:08,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:23:08,151 INFO L168 Benchmark]: Toolchain (without parser) took 224308.35 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-08-07 12:23:08,152 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-08-07 12:23:08,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2435.88 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. [2018-08-07 12:23:08,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 256.44 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. [2018-08-07 12:23:08,155 INFO L168 Benchmark]: Boogie Preprocessor took 928.90 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 913.3 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 128.0 MB. Max. memory is 7.1 GB. [2018-08-07 12:23:08,157 INFO L168 Benchmark]: RCFGBuilder took 10266.51 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 723.4 MB). Peak memory consumption was 723.4 MB. Max. memory is 7.1 GB. [2018-08-07 12:23:08,158 INFO L168 Benchmark]: TraceAbstraction took 210412.06 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 1.6 GB in the beginning and 2.6 GB in the end (delta: -992.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-08-07 12:23:08,167 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2435.88 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 256.44 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 928.90 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 913.3 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 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10266.51 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 723.4 MB). Peak memory consumption was 723.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210412.06 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 1.6 GB in the beginning and 2.6 GB in the end (delta: -992.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was constructing difference of abstraction (189859states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (110669 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.1s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 171.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1563 SDtfs, 34477 SDslu, 2176 SDs, 0 SdLazy, 75392 SolverSat, 15582 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 131.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6810 GetRequests, 6673 SyntacticMatches, 34 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189859occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 10804 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 5810 NumberOfCodeBlocks, 5810 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9125 ConstructedInterpolants, 0 QuantifiedInterpolants, 8909851 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5628 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 6064/6495 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_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-23-08-187.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-23-08-187.csv Completed graceful shutdown