java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:15:36,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:15:36,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:15:36,831 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:15:36,831 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:15:36,832 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:15:36,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:15:36,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:15:36,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:15:36,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:15:36,840 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:15:36,840 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:15:36,841 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:15:36,842 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:15:36,843 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:15:36,845 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:15:36,847 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:15:36,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:15:36,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:15:36,858 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:15:36,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:15:36,862 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:15:36,867 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:15:36,867 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:15:36,867 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:15:36,868 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:15:36,871 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:15:36,873 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:15:36,874 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:15:36,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:15:36,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:15:36,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:15:36,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:15:36,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:15:36,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:15:36,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:15:36,884 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 13:15:36,911 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:15:36,911 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:15:36,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:15:36,913 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:15:36,913 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:15:36,913 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:15:36,913 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:15:36,913 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:15:36,914 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:15:36,914 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:15:36,914 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:15:36,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:15:36,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:15:36,915 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:15:36,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:15:36,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:15:36,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:15:36,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:15:36,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:15:36,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:15:36,917 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:15:36,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:15:36,917 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:15:36,917 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:15:36,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:15:36,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:15:36,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:15:36,918 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:15:36,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:15:36,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:15:36,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:15:36,919 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:15:36,919 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:15:36,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:15:36,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:15:36,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:15:36,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:15:36,993 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:15:36,994 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label08_true-unreach-call.c [2018-07-24 13:15:37,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73727592b/1a34203624d340a38e05b8ed085e2719/FLAGa868d0f59 [2018-07-24 13:15:37,969 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:15:37,970 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label08_true-unreach-call.c [2018-07-24 13:15:38,030 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73727592b/1a34203624d340a38e05b8ed085e2719/FLAGa868d0f59 [2018-07-24 13:15:38,046 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73727592b/1a34203624d340a38e05b8ed085e2719 [2018-07-24 13:15:38,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:15:38,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:15:38,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:15:38,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:15:38,072 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:15:38,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:15:38" (1/1) ... [2018-07-24 13:15:38,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfb2792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:38, skipping insertion in model container [2018-07-24 13:15:38,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:15:38" (1/1) ... [2018-07-24 13:15:38,536 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:15:40,363 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:15:40,384 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:15:41,711 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:15:42,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42 WrapperNode [2018-07-24 13:15:42,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:15:42,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:15:42,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:15:42,056 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:15:42,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:42,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:42,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:15:42,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:15:42,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:15:42,454 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:15:42,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:42,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:42,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:42,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:43,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:43,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:43,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... [2018-07-24 13:15:43,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:15:43,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:15:43,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:15:43,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:15:43,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:15:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:15:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:15:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-07-24 13:15:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-07-24 13:15:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:15:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:15:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:15:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:15:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:15:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:15:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:15:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:15:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:15:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 13:15:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:15:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:15:56,501 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 13:15:56,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:15:56 BoogieIcfgContainer [2018-07-24 13:15:56,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 13:15:56,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 13:15:56,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 13:15:56,516 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 13:15:56,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:15:38" (1/3) ... [2018-07-24 13:15:56,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166ed2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:15:56, skipping insertion in model container [2018-07-24 13:15:56,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:15:42" (2/3) ... [2018-07-24 13:15:56,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166ed2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:15:56, skipping insertion in model container [2018-07-24 13:15:56,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:15:56" (3/3) ... [2018-07-24 13:15:56,522 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label08_true-unreach-call.c [2018-07-24 13:15:56,533 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 13:15:56,541 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 13:15:56,614 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 13:15:56,614 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 13:15:56,615 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 13:15:56,615 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 13:15:56,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 13:15:56,615 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 13:15:56,615 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 13:15:56,615 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 13:15:56,616 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 13:15:56,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states. [2018-07-24 13:15:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2018-07-24 13:15:56,736 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:15:56,739 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:15:56,739 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:15:56,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2041754190, now seen corresponding path program 1 times [2018-07-24 13:15:56,749 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:15:56,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:15:56,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:15:56,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:15:56,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:15:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:15:58,773 WARN L169 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:16:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:16:00,304 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:16:00,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:16:00,304 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:16:00,311 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:16:00,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:16:00,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:16:00,327 INFO L87 Difference]: Start difference. First operand 1316 states. Second operand 3 states. [2018-07-24 13:16:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:16:09,680 INFO L93 Difference]: Finished difference Result 3726 states and 6984 transitions. [2018-07-24 13:16:09,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:16:09,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 984 [2018-07-24 13:16:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:16:09,732 INFO L225 Difference]: With dead ends: 3726 [2018-07-24 13:16:09,733 INFO L226 Difference]: Without dead ends: 2408 [2018-07-24 13:16:09,743 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:16:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2018-07-24 13:16:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2365. [2018-07-24 13:16:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2018-07-24 13:16:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 4384 transitions. [2018-07-24 13:16:09,926 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 4384 transitions. Word has length 984 [2018-07-24 13:16:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:16:09,930 INFO L471 AbstractCegarLoop]: Abstraction has 2365 states and 4384 transitions. [2018-07-24 13:16:09,931 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:16:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 4384 transitions. [2018-07-24 13:16:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2018-07-24 13:16:10,037 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:16:10,038 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:16:10,038 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:16:10,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2027170232, now seen corresponding path program 1 times [2018-07-24 13:16:10,039 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:16:10,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:10,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:16:10,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:10,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:16:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:16:10,510 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:16:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:16:11,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:16:11,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 13:16:11,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:16:11,359 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 13:16:11,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 13:16:11,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 13:16:11,360 INFO L87 Difference]: Start difference. First operand 2365 states and 4384 transitions. Second operand 6 states. [2018-07-24 13:16:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:16:27,006 INFO L93 Difference]: Finished difference Result 6934 states and 13037 transitions. [2018-07-24 13:16:27,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:16:27,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 994 [2018-07-24 13:16:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:16:27,042 INFO L225 Difference]: With dead ends: 6934 [2018-07-24 13:16:27,042 INFO L226 Difference]: Without dead ends: 4575 [2018-07-24 13:16:27,050 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:16:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2018-07-24 13:16:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4479. [2018-07-24 13:16:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4479 states. [2018-07-24 13:16:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 7925 transitions. [2018-07-24 13:16:27,177 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 7925 transitions. Word has length 994 [2018-07-24 13:16:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:16:27,177 INFO L471 AbstractCegarLoop]: Abstraction has 4479 states and 7925 transitions. [2018-07-24 13:16:27,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 13:16:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 7925 transitions. [2018-07-24 13:16:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2018-07-24 13:16:27,199 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:16:27,200 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:16:27,200 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:16:27,201 INFO L82 PathProgramCache]: Analyzing trace with hash 516673686, now seen corresponding path program 1 times [2018-07-24 13:16:27,201 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:16:27,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:27,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:16:27,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:27,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:16:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:16:27,588 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:16:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:16:28,032 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:16:28,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 13:16:28,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:16:28,034 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:16:28,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:16:28,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 13:16:28,034 INFO L87 Difference]: Start difference. First operand 4479 states and 7925 transitions. Second operand 5 states. [2018-07-24 13:16:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:16:37,663 INFO L93 Difference]: Finished difference Result 11313 states and 19952 transitions. [2018-07-24 13:16:37,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:16:37,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1001 [2018-07-24 13:16:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:16:37,705 INFO L225 Difference]: With dead ends: 11313 [2018-07-24 13:16:37,705 INFO L226 Difference]: Without dead ends: 6840 [2018-07-24 13:16:37,721 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 13:16:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2018-07-24 13:16:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 6662. [2018-07-24 13:16:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6662 states. [2018-07-24 13:16:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6662 states to 6662 states and 10817 transitions. [2018-07-24 13:16:37,905 INFO L78 Accepts]: Start accepts. Automaton has 6662 states and 10817 transitions. Word has length 1001 [2018-07-24 13:16:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:16:37,905 INFO L471 AbstractCegarLoop]: Abstraction has 6662 states and 10817 transitions. [2018-07-24 13:16:37,906 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:16:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6662 states and 10817 transitions. [2018-07-24 13:16:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-07-24 13:16:37,939 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:16:37,940 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:16:37,941 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:16:37,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2008972914, now seen corresponding path program 1 times [2018-07-24 13:16:37,941 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:16:37,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:37,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:16:37,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:37,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:16:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:16:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 13:16:39,106 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:16:39,106 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:16:39,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:16:39,122 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:16:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:16:40,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:16:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 13:16:41,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:16:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 13:16:42,575 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:16:42,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 13:16:42,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:16:42,577 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:16:42,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:16:42,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 13:16:42,578 INFO L87 Difference]: Start difference. First operand 6662 states and 10817 transitions. Second operand 5 states. [2018-07-24 13:16:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:16:47,033 INFO L93 Difference]: Finished difference Result 20323 states and 33733 transitions. [2018-07-24 13:16:47,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 13:16:47,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1023 [2018-07-24 13:16:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:16:47,115 INFO L225 Difference]: With dead ends: 20323 [2018-07-24 13:16:47,116 INFO L226 Difference]: Without dead ends: 13667 [2018-07-24 13:16:47,141 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2051 GetRequests, 2038 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-07-24 13:16:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13667 states. [2018-07-24 13:16:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13667 to 13567. [2018-07-24 13:16:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13567 states. [2018-07-24 13:16:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 22473 transitions. [2018-07-24 13:16:47,574 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 22473 transitions. Word has length 1023 [2018-07-24 13:16:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:16:47,575 INFO L471 AbstractCegarLoop]: Abstraction has 13567 states and 22473 transitions. [2018-07-24 13:16:47,575 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:16:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 22473 transitions. [2018-07-24 13:16:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2018-07-24 13:16:47,636 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:16:47,637 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:16:47,637 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:16:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1421707233, now seen corresponding path program 1 times [2018-07-24 13:16:47,638 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:16:47,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:47,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:16:47,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:16:47,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:16:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:16:48,090 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:16:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:16:49,100 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:16:49,100 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:16:49,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:16:49,119 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:16:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:16:49,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:16:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 13:16:50,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:16:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:16:51,621 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:16:51,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 13:16:51,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:16:51,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:16:51,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:16:51,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 13:16:51,624 INFO L87 Difference]: Start difference. First operand 13567 states and 22473 transitions. Second operand 5 states. [2018-07-24 13:17:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:17:02,031 INFO L93 Difference]: Finished difference Result 42324 states and 74873 transitions. [2018-07-24 13:17:02,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 13:17:02,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1022 [2018-07-24 13:17:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:17:02,158 INFO L225 Difference]: With dead ends: 42324 [2018-07-24 13:17:02,159 INFO L226 Difference]: Without dead ends: 28763 [2018-07-24 13:17:02,210 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2053 GetRequests, 2038 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:17:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28763 states. [2018-07-24 13:17:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28763 to 27683. [2018-07-24 13:17:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27683 states. [2018-07-24 13:17:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27683 states to 27683 states and 44125 transitions. [2018-07-24 13:17:02,963 INFO L78 Accepts]: Start accepts. Automaton has 27683 states and 44125 transitions. Word has length 1022 [2018-07-24 13:17:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:17:02,964 INFO L471 AbstractCegarLoop]: Abstraction has 27683 states and 44125 transitions. [2018-07-24 13:17:02,964 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:17:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 27683 states and 44125 transitions. [2018-07-24 13:17:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2018-07-24 13:17:03,071 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:17:03,072 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:17:03,072 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:17:03,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1102645754, now seen corresponding path program 1 times [2018-07-24 13:17:03,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:17:03,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:17:03,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:03,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:17:03,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:17:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:17:04,644 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:17:04,644 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:17:04,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:04,664 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:17:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:05,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:17:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:17:06,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:17:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:17:07,223 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:17:07,223 INFO L191 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 [2018-07-24 13:17:07,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:07,239 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:17:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:08,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:17:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:17:09,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:17:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:17:10,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:17:10,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 13:17:10,153 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:17:10,155 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:17:10,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:17:10,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-07-24 13:17:10,156 INFO L87 Difference]: Start difference. First operand 27683 states and 44125 transitions. Second operand 9 states. [2018-07-24 13:17:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:17:27,226 INFO L93 Difference]: Finished difference Result 85624 states and 153638 transitions. [2018-07-24 13:17:27,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 13:17:27,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1039 [2018-07-24 13:17:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:17:27,453 INFO L225 Difference]: With dead ends: 85624 [2018-07-24 13:17:27,453 INFO L226 Difference]: Without dead ends: 57947 [2018-07-24 13:17:27,532 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4171 GetRequests, 4148 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-07-24 13:17:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57947 states. [2018-07-24 13:17:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57947 to 57218. [2018-07-24 13:17:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57218 states. [2018-07-24 13:17:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57218 states to 57218 states and 95192 transitions. [2018-07-24 13:17:29,180 INFO L78 Accepts]: Start accepts. Automaton has 57218 states and 95192 transitions. Word has length 1039 [2018-07-24 13:17:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:17:29,180 INFO L471 AbstractCegarLoop]: Abstraction has 57218 states and 95192 transitions. [2018-07-24 13:17:29,180 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:17:29,181 INFO L276 IsEmpty]: Start isEmpty. Operand 57218 states and 95192 transitions. [2018-07-24 13:17:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2018-07-24 13:17:29,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:17:29,347 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:17:29,347 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:17:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash -34125419, now seen corresponding path program 1 times [2018-07-24 13:17:29,348 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:17:29,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:17:29,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:29,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:17:29,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:17:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:17:30,578 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:17:30,578 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:17:30,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:30,589 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:17:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:31,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:17:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 13:17:31,744 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:17:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 13:17:32,790 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:17:32,791 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 7] total 14 [2018-07-24 13:17:32,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:17:32,792 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 13:17:32,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 13:17:32,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-07-24 13:17:32,793 INFO L87 Difference]: Start difference. First operand 57218 states and 95192 transitions. Second operand 6 states. [2018-07-24 13:17:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:17:42,406 INFO L93 Difference]: Finished difference Result 230602 states and 417864 transitions. [2018-07-24 13:17:42,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 13:17:42,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1055 [2018-07-24 13:17:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:17:43,051 INFO L225 Difference]: With dead ends: 230602 [2018-07-24 13:17:43,051 INFO L226 Difference]: Without dead ends: 173390 [2018-07-24 13:17:43,172 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2117 GetRequests, 2100 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-07-24 13:17:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173390 states. [2018-07-24 13:17:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173390 to 171988. [2018-07-24 13:17:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171988 states. [2018-07-24 13:17:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171988 states to 171988 states and 315812 transitions. [2018-07-24 13:17:49,299 INFO L78 Accepts]: Start accepts. Automaton has 171988 states and 315812 transitions. Word has length 1055 [2018-07-24 13:17:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:17:49,299 INFO L471 AbstractCegarLoop]: Abstraction has 171988 states and 315812 transitions. [2018-07-24 13:17:49,299 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 13:17:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 171988 states and 315812 transitions. [2018-07-24 13:17:50,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2018-07-24 13:17:50,255 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:17:50,256 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:17:50,256 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:17:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash 226158734, now seen corresponding path program 1 times [2018-07-24 13:17:50,257 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:17:50,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:17:50,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:50,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:17:50,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:17:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:50,932 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 13:17:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 89 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 13:17:51,281 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:17:51,281 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:17:52,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:17:52,163 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:17:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:17:52,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:17:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 13:17:53,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:17:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 73 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 13:17:55,064 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:17:55,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 13:17:55,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:17:55,066 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:17:55,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:17:55,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-24 13:17:55,067 INFO L87 Difference]: Start difference. First operand 171988 states and 315812 transitions. Second operand 5 states. [2018-07-24 13:18:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:18:17,369 INFO L93 Difference]: Finished difference Result 510961 states and 1066067 transitions. [2018-07-24 13:18:17,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 13:18:17,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1066 [2018-07-24 13:18:17,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:18:18,865 INFO L225 Difference]: With dead ends: 510961 [2018-07-24 13:18:18,865 INFO L226 Difference]: Without dead ends: 338979 [2018-07-24 13:18:19,206 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2139 GetRequests, 2128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:18:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338979 states. [2018-07-24 13:18:28,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338979 to 336953. [2018-07-24 13:18:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336953 states. [2018-07-24 13:18:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336953 states to 336953 states and 622093 transitions. [2018-07-24 13:18:30,987 INFO L78 Accepts]: Start accepts. Automaton has 336953 states and 622093 transitions. Word has length 1066 [2018-07-24 13:18:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:18:30,987 INFO L471 AbstractCegarLoop]: Abstraction has 336953 states and 622093 transitions. [2018-07-24 13:18:30,987 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:18:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 336953 states and 622093 transitions. [2018-07-24 13:18:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2018-07-24 13:18:32,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:18:32,463 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:18:32,463 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:18:32,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1193665534, now seen corresponding path program 1 times [2018-07-24 13:18:32,464 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:18:32,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:18:32,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:18:32,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:18:32,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:18:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:18:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 13:18:40,298 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:18:40,298 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 13:18:40,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:18:40,305 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:18:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:18:41,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:18:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-07-24 13:18:41,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:18:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 89 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 13:18:42,186 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:18:42,186 INFO L191 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 [2018-07-24 13:18:42,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:18:42,203 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:18:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:18:43,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:18:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-07-24 13:18:44,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:18:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 89 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 13:18:45,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:18:45,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 7 [2018-07-24 13:18:45,256 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:18:45,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 13:18:45,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 13:18:45,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 13:18:45,259 INFO L87 Difference]: Start difference. First operand 336953 states and 622093 transitions. Second operand 6 states. Received shutdown request... [2018-07-24 13:19:00,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:19:00,930 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 13:19:00,937 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 13:19:00,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:19:00 BoogieIcfgContainer [2018-07-24 13:19:00,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 13:19:00,938 INFO L168 Benchmark]: Toolchain (without parser) took 202878.68 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 13:19:00,939 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 13:19:00,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3991.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 962.8 MB in the end (delta: 409.6 MB). Peak memory consumption was 409.6 MB. Max. memory is 7.1 GB. [2018-07-24 13:19:00,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 398.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 230.7 MB). Free memory was 962.8 MB in the beginning and 1.6 GB in the end (delta: -655.6 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2018-07-24 13:19:00,942 INFO L168 Benchmark]: Boogie Preprocessor took 1062.40 ms. Allocated memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: 599.3 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -562.3 MB). Peak memory consumption was 110.9 MB. Max. memory is 7.1 GB. [2018-07-24 13:19:00,943 INFO L168 Benchmark]: RCFGBuilder took 12989.55 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 357.0 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 82.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 13:19:00,944 INFO L168 Benchmark]: TraceAbstraction took 184430.28 ms. Allocated memory was 2.7 GB in the beginning and 5.3 GB in the end (delta: 2.6 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 13:19:00,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3991.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 962.8 MB in the end (delta: 409.6 MB). Peak memory consumption was 409.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 398.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 230.7 MB). Free memory was 962.8 MB in the beginning and 1.6 GB in the end (delta: -655.6 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1062.40 ms. Allocated memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: 599.3 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -562.3 MB). Peak memory consumption was 110.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12989.55 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 357.0 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 82.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 184430.28 ms. Allocated memory was 2.7 GB in the beginning and 5.3 GB in the end (delta: 2.6 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9399]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9399). Cancelled while BasicCegarLoop was constructing difference of abstraction (336953states) and interpolant automaton (currently 7 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (935913 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1316 locations, 1 error locations. TIMEOUT Result, 184.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 117.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8323 SDtfs, 53768 SDslu, 12158 SDs, 0 SdLazy, 47935 SolverSat, 15178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16865 GetRequests, 16752 SyntacticMatches, 25 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336953occurred in iteration=8, 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: 21.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 5654 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.0s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 17650 NumberOfCodeBlocks, 17650 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 26017 ConstructedInterpolants, 0 QuantifiedInterpolants, 33678600 SizeOfPredicates, 19 NumberOfNonLiveVariables, 19569 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 1737/1893 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/Problem06_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-19-00-967.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_13-19-00-967.csv Completed graceful shutdown