java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 11:12:41,776 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 11:12:41,778 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 11:12:41,791 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 11:12:41,791 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 11:12:41,792 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 11:12:41,794 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 11:12:41,797 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 11:12:41,800 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 11:12:41,801 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 11:12:41,802 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 11:12:41,803 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 11:12:41,804 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 11:12:41,805 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 11:12:41,806 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 11:12:41,807 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 11:12:41,808 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 11:12:41,810 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 11:12:41,812 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 11:12:41,813 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 11:12:41,815 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 11:12:41,816 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 11:12:41,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 11:12:41,819 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 11:12:41,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 11:12:41,820 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 11:12:41,821 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 11:12:41,822 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 11:12:41,823 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 11:12:41,824 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 11:12:41,824 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 11:12:41,825 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 11:12:41,825 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 11:12:41,825 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 11:12:41,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 11:12:41,827 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 11:12:41,828 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 11:12:41,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 11:12:41,844 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 11:12:41,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 11:12:41,845 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 11:12:41,845 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 11:12:41,846 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 11:12:41,846 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 11:12:41,846 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 11:12:41,846 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 11:12:41,846 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 11:12:41,846 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 11:12:41,847 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 11:12:41,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 11:12:41,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 11:12:41,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 11:12:41,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 11:12:41,848 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 11:12:41,848 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 11:12:41,849 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 11:12:41,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 11:12:41,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 11:12:41,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 11:12:41,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 11:12:41,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:12:41,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 11:12:41,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 11:12:41,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 11:12:41,850 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 11:12:41,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 11:12:41,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 11:12:41,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 11:12:41,851 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 11:12:41,851 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 11:12:41,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 11:12:41,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 11:12:41,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 11:12:41,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 11:12:41,940 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 11:12:41,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label30_true-unreach-call.c [2018-08-07 11:12:42,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14d717312/c2faa1e9b04a4370b7a58bd276aa5996/FLAG494a1dd2c [2018-08-07 11:12:42,857 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 11:12:42,858 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label30_true-unreach-call.c [2018-08-07 11:12:42,900 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14d717312/c2faa1e9b04a4370b7a58bd276aa5996/FLAG494a1dd2c [2018-08-07 11:12:42,924 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14d717312/c2faa1e9b04a4370b7a58bd276aa5996 [2018-08-07 11:12:42,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 11:12:42,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 11:12:42,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 11:12:42,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 11:12:42,953 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 11:12:42,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:12:42" (1/1) ... [2018-08-07 11:12:42,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523c516a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:42, skipping insertion in model container [2018-08-07 11:12:42,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:12:42" (1/1) ... [2018-08-07 11:12:43,339 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 11:12:44,541 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:12:44,556 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 11:12:45,333 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:12:45,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45 WrapperNode [2018-08-07 11:12:45,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 11:12:45,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 11:12:45,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 11:12:45,483 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 11:12:45,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:45,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:45,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 11:12:45,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 11:12:45,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 11:12:45,647 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 11:12:46,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... [2018-08-07 11:12:46,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 11:12:46,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 11:12:46,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 11:12:46,261 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 11:12:46,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:12:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 11:12:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 11:12:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:12:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:12:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-07 11:12:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-07 11:12:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 11:12:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 11:12:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 11:12:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 11:12:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 11:12:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 11:12:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 11:12:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 11:12:58,620 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 11:12:58,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:12:58 BoogieIcfgContainer [2018-08-07 11:12:58,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 11:12:58,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 11:12:58,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 11:12:58,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 11:12:58,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 11:12:42" (1/3) ... [2018-08-07 11:12:58,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36af980b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:12:58, skipping insertion in model container [2018-08-07 11:12:58,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:12:45" (2/3) ... [2018-08-07 11:12:58,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36af980b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:12:58, skipping insertion in model container [2018-08-07 11:12:58,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:12:58" (3/3) ... [2018-08-07 11:12:58,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label30_true-unreach-call.c [2018-08-07 11:12:58,639 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 11:12:58,649 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 11:12:58,712 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 11:12:58,713 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 11:12:58,713 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 11:12:58,714 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 11:12:58,714 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 11:12:58,714 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 11:12:58,714 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 11:12:58,714 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 11:12:58,714 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 11:12:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-08-07 11:12:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-08-07 11:12:58,822 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:12:58,824 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:12:58,826 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:12:58,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1308366356, now seen corresponding path program 1 times [2018-08-07 11:12:58,835 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:12:58,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:58,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:58,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:58,889 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:12:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:00,442 WARN L170 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:13:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:01,461 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:13:01,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:13:01,461 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:13:01,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:13:01,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:13:01,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:13:01,488 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-08-07 11:13:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:13:08,776 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-08-07 11:13:08,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:13:08,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 794 [2018-08-07 11:13:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:13:08,825 INFO L225 Difference]: With dead ends: 2647 [2018-08-07 11:13:08,825 INFO L226 Difference]: Without dead ends: 1738 [2018-08-07 11:13:08,836 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:13:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-08-07 11:13:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-08-07 11:13:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-08-07 11:13:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3169 transitions. [2018-08-07 11:13:09,016 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3169 transitions. Word has length 794 [2018-08-07 11:13:09,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:13:09,020 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3169 transitions. [2018-08-07 11:13:09,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:13:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3169 transitions. [2018-08-07 11:13:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-08-07 11:13:09,056 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:13:09,058 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-08-07 11:13:09,059 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:13:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash -54084401, now seen corresponding path program 1 times [2018-08-07 11:13:09,061 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:13:09,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:09,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:09,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:09,063 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:13:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:10,210 WARN L170 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:13:10,440 WARN L170 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-08-07 11:13:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:11,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:11,792 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:13:11,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:11,804 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:12,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:13,154 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:14,418 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:13:14,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-08-07 11:13:14,419 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:13:14,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:13:14,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:13:14,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:13:14,422 INFO L87 Difference]: Start difference. First operand 1738 states and 3169 transitions. Second operand 3 states. [2018-08-07 11:13:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:13:21,805 INFO L93 Difference]: Finished difference Result 5140 states and 9490 transitions. [2018-08-07 11:13:21,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:13:21,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 814 [2018-08-07 11:13:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:13:21,835 INFO L225 Difference]: With dead ends: 5140 [2018-08-07 11:13:21,835 INFO L226 Difference]: Without dead ends: 3408 [2018-08-07 11:13:21,842 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1628 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:13:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-08-07 11:13:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-08-07 11:13:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-08-07 11:13:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5907 transitions. [2018-08-07 11:13:21,929 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5907 transitions. Word has length 814 [2018-08-07 11:13:21,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:13:21,930 INFO L480 AbstractCegarLoop]: Abstraction has 3408 states and 5907 transitions. [2018-08-07 11:13:21,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:13:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5907 transitions. [2018-08-07 11:13:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-08-07 11:13:21,946 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:13:21,947 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-08-07 11:13:21,947 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:13:21,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1296387403, now seen corresponding path program 1 times [2018-08-07 11:13:21,948 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:13:21,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:21,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:21,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:21,951 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:13:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:22,324 WARN L170 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-08-07 11:13:22,651 WARN L170 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:13:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:23,402 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:13:23,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-08-07 11:13:23,403 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:13:23,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 11:13:23,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 11:13:23,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:13:23,405 INFO L87 Difference]: Start difference. First operand 3408 states and 5907 transitions. Second operand 7 states. [2018-08-07 11:13:24,607 WARN L170 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-08-07 11:13:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:13:34,007 INFO L93 Difference]: Finished difference Result 8740 states and 15234 transitions. [2018-08-07 11:13:34,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:13:34,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 816 [2018-08-07 11:13:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:13:34,057 INFO L225 Difference]: With dead ends: 8740 [2018-08-07 11:13:34,057 INFO L226 Difference]: Without dead ends: 5338 [2018-08-07 11:13:34,068 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:13:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2018-08-07 11:13:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5223. [2018-08-07 11:13:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5223 states. [2018-08-07 11:13:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 8604 transitions. [2018-08-07 11:13:34,235 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 8604 transitions. Word has length 816 [2018-08-07 11:13:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:13:34,236 INFO L480 AbstractCegarLoop]: Abstraction has 5223 states and 8604 transitions. [2018-08-07 11:13:34,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 11:13:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 8604 transitions. [2018-08-07 11:13:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-08-07 11:13:34,257 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:13:34,258 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:13:34,258 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:13:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1685373788, now seen corresponding path program 1 times [2018-08-07 11:13:34,259 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:13:34,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:34,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:34,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:34,260 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:13:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:34,743 WARN L170 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-08-07 11:13:35,038 WARN L170 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:13:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:35,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:35,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-08-07 11:13:35,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:35,724 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:36,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:36,814 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:37,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:37,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:13:37,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:37,509 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:38,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:38,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:13:39,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:13:39,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-08-07 11:13:39,397 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:13:39,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-07 11:13:39,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-07 11:13:39,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-08-07 11:13:39,402 INFO L87 Difference]: Start difference. First operand 5223 states and 8604 transitions. Second operand 10 states. [2018-08-07 11:13:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:13:50,594 INFO L93 Difference]: Finished difference Result 16353 states and 28863 transitions. [2018-08-07 11:13:50,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-08-07 11:13:50,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 832 [2018-08-07 11:13:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:13:50,652 INFO L225 Difference]: With dead ends: 16353 [2018-08-07 11:13:50,652 INFO L226 Difference]: Without dead ends: 11136 [2018-08-07 11:13:50,671 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 3348 GetRequests, 3319 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2018-08-07 11:13:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-08-07 11:13:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10801. [2018-08-07 11:13:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10801 states. [2018-08-07 11:13:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10801 states to 10801 states and 16239 transitions. [2018-08-07 11:13:50,987 INFO L78 Accepts]: Start accepts. Automaton has 10801 states and 16239 transitions. Word has length 832 [2018-08-07 11:13:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:13:50,988 INFO L480 AbstractCegarLoop]: Abstraction has 10801 states and 16239 transitions. [2018-08-07 11:13:50,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-08-07 11:13:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 10801 states and 16239 transitions. [2018-08-07 11:13:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2018-08-07 11:13:51,028 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:13:51,029 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-08-07 11:13:51,030 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:13:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash -94480551, now seen corresponding path program 1 times [2018-08-07 11:13:51,030 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:13:51,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:51,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:51,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:51,032 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:13:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-08-07 11:13:51,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:51,912 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:13:51,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:51,931 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:52,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-08-07 11:13:52,998 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-08-07 11:13:53,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:53,419 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:13:53,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:53,436 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:54,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-08-07 11:13:54,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-08-07 11:13:55,346 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:13:55,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-08-07 11:13:55,347 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:13:55,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:13:55,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:13:55,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:13:55,349 INFO L87 Difference]: Start difference. First operand 10801 states and 16239 transitions. Second operand 9 states. [2018-08-07 11:14:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:14:13,644 INFO L93 Difference]: Finished difference Result 42937 states and 75683 transitions. [2018-08-07 11:14:13,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-08-07 11:14:13,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 859 [2018-08-07 11:14:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:14:13,794 INFO L225 Difference]: With dead ends: 42937 [2018-08-07 11:14:13,794 INFO L226 Difference]: Without dead ends: 32142 [2018-08-07 11:14:13,844 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 3484 GetRequests, 3444 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2018-08-07 11:14:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32142 states. [2018-08-07 11:14:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32142 to 31575. [2018-08-07 11:14:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31575 states. [2018-08-07 11:14:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31575 states to 31575 states and 43803 transitions. [2018-08-07 11:14:14,699 INFO L78 Accepts]: Start accepts. Automaton has 31575 states and 43803 transitions. Word has length 859 [2018-08-07 11:14:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:14:14,700 INFO L480 AbstractCegarLoop]: Abstraction has 31575 states and 43803 transitions. [2018-08-07 11:14:14,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:14:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 31575 states and 43803 transitions. [2018-08-07 11:14:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-08-07 11:14:14,805 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:14:14,806 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:14:14,806 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:14:14,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1481906723, now seen corresponding path program 1 times [2018-08-07 11:14:14,807 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:14:14,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:14:14,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:14,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:14:14,808 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:14:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:15,166 WARN L170 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:14:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-08-07 11:14:16,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:14:16,048 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-08-07 11:14:16,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:16,063 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:14:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:16,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:14:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-08-07 11:14:17,586 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:14:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-08-07 11:14:18,357 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:14:18,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-08-07 11:14:18,358 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:14:18,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:14:18,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:14:18,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:14:18,360 INFO L87 Difference]: Start difference. First operand 31575 states and 43803 transitions. Second operand 5 states. [2018-08-07 11:14:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:14:25,771 INFO L93 Difference]: Finished difference Result 80208 states and 114364 transitions. [2018-08-07 11:14:25,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:14:25,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 967 [2018-08-07 11:14:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:14:25,942 INFO L225 Difference]: With dead ends: 80208 [2018-08-07 11:14:25,943 INFO L226 Difference]: Without dead ends: 48639 [2018-08-07 11:14:26,015 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1943 GetRequests, 1928 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-08-07 11:14:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48639 states. [2018-08-07 11:14:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48639 to 45956. [2018-08-07 11:14:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45956 states. [2018-08-07 11:14:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45956 states to 45956 states and 60151 transitions. [2018-08-07 11:14:27,061 INFO L78 Accepts]: Start accepts. Automaton has 45956 states and 60151 transitions. Word has length 967 [2018-08-07 11:14:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:14:27,062 INFO L480 AbstractCegarLoop]: Abstraction has 45956 states and 60151 transitions. [2018-08-07 11:14:27,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:14:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 45956 states and 60151 transitions. [2018-08-07 11:14:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2018-08-07 11:14:27,152 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:14:27,154 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:14:27,154 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:14:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1859774945, now seen corresponding path program 1 times [2018-08-07 11:14:27,155 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:14:27,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:14:27,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:27,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:14:27,156 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:14:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 388 proven. 50 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-08-07 11:14:28,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:14:28,380 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:14:28,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:28,388 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:14:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:29,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:14:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 11:14:29,925 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:14:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 11:14:30,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:14:30,813 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:14:30,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:30,828 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:14:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:31,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:14:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 11:14:32,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:14:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 11:14:33,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:14:33,642 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-08-07 11:14:33,642 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:14:33,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-07 11:14:33,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-07 11:14:33,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-08-07 11:14:33,645 INFO L87 Difference]: Start difference. First operand 45956 states and 60151 transitions. Second operand 10 states. [2018-08-07 11:14:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:14:52,144 INFO L93 Difference]: Finished difference Result 130271 states and 177983 transitions. [2018-08-07 11:14:52,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-08-07 11:14:52,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1137 [2018-08-07 11:14:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:14:52,449 INFO L225 Difference]: With dead ends: 130271 [2018-08-07 11:14:52,450 INFO L226 Difference]: Without dead ends: 84321 [2018-08-07 11:14:52,554 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4661 GetRequests, 4590 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=863, Invalid=4107, Unknown=0, NotChecked=0, Total=4970 [2018-08-07 11:14:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84321 states. [2018-08-07 11:14:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84321 to 83339. [2018-08-07 11:14:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83339 states. [2018-08-07 11:14:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83339 states to 83339 states and 103057 transitions. [2018-08-07 11:14:54,645 INFO L78 Accepts]: Start accepts. Automaton has 83339 states and 103057 transitions. Word has length 1137 [2018-08-07 11:14:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:14:54,645 INFO L480 AbstractCegarLoop]: Abstraction has 83339 states and 103057 transitions. [2018-08-07 11:14:54,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-08-07 11:14:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 83339 states and 103057 transitions. [2018-08-07 11:14:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1449 [2018-08-07 11:14:54,764 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:14:54,765 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:14:54,765 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:14:54,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1124937950, now seen corresponding path program 1 times [2018-08-07 11:14:54,766 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:14:54,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:14:54,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:54,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:14:54,767 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:14:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:55,491 WARN L170 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:14:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 657 proven. 355 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2018-08-07 11:14:56,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:14:56,779 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:14:56,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:56,787 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:14:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:57,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:14:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2018-08-07 11:14:58,947 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:15:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 674 proven. 286 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-08-07 11:15:00,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:15:00,039 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:15:00,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:15:00,059 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:15:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:15:01,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:15:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2018-08-07 11:15:02,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:15:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 674 proven. 286 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-08-07 11:15:03,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:15:03,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-08-07 11:15:03,489 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:15:03,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-08-07 11:15:03,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-08-07 11:15:03,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-08-07 11:15:03,491 INFO L87 Difference]: Start difference. First operand 83339 states and 103057 transitions. Second operand 14 states. [2018-08-07 11:15:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:15:48,248 INFO L93 Difference]: Finished difference Result 340754 states and 455291 transitions. [2018-08-07 11:15:48,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-08-07 11:15:48,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1448 [2018-08-07 11:15:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:15:49,360 INFO L225 Difference]: With dead ends: 340754 [2018-08-07 11:15:49,360 INFO L226 Difference]: Without dead ends: 256358 [2018-08-07 11:15:50,021 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5904 GetRequests, 5832 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=876, Invalid=3680, Unknown=0, NotChecked=0, Total=4556 [2018-08-07 11:15:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256358 states. [2018-08-07 11:15:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256358 to 251744. [2018-08-07 11:15:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251744 states. [2018-08-07 11:15:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251744 states to 251744 states and 305551 transitions. [2018-08-07 11:15:55,214 INFO L78 Accepts]: Start accepts. Automaton has 251744 states and 305551 transitions. Word has length 1448 [2018-08-07 11:15:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:15:55,215 INFO L480 AbstractCegarLoop]: Abstraction has 251744 states and 305551 transitions. [2018-08-07 11:15:55,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-08-07 11:15:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 251744 states and 305551 transitions. [2018-08-07 11:15:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1455 [2018-08-07 11:15:55,555 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:15:55,556 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:15:55,556 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:15:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1335782687, now seen corresponding path program 1 times [2018-08-07 11:15:55,557 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:15:55,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:15:55,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:15:55,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:15:55,558 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:15:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:16:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 979 proven. 336 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-08-07 11:16:02,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:16:02,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:16:02,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:16:02,901 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:16:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:16:03,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:16:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-08-07 11:16:04,447 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:16:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-08-07 11:16:05,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:16:05,375 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:16:05,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:16:05,392 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:16:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:16:06,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:16:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-08-07 11:16:07,589 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:16:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-08-07 11:16:08,514 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:16:08,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 5, 5] total 25 [2018-08-07 11:16:08,516 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:16:08,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-08-07 11:16:08,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-08-07 11:16:08,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2018-08-07 11:16:08,518 INFO L87 Difference]: Start difference. First operand 251744 states and 305551 transitions. Second operand 19 states. [2018-08-07 11:16:08,986 WARN L170 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-08-07 11:16:09,344 WARN L170 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2018-08-07 11:16:10,239 WARN L170 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-08-07 11:16:10,838 WARN L170 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-08-07 11:16:11,349 WARN L170 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2018-08-07 11:16:13,321 WARN L170 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-08-07 11:16:13,972 WARN L170 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-08-07 11:16:14,331 WARN L170 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2018-08-07 11:16:15,309 WARN L170 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-08-07 11:16:16,116 WARN L170 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-08-07 11:16:17,080 WARN L170 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-08-07 11:16:17,735 WARN L170 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-08-07 11:16:18,343 WARN L170 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-08-07 11:16:18,845 WARN L170 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2018-08-07 11:16:20,296 WARN L170 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 Received shutdown request... [2018-08-07 11:16:20,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-08-07 11:16:20,443 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 11:16:20,448 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 11:16:20,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 11:16:20 BoogieIcfgContainer [2018-08-07 11:16:20,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 11:16:20,449 INFO L168 Benchmark]: Toolchain (without parser) took 217511.19 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -995.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-08-07 11:16:20,450 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 11:16:20,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2535.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-08-07 11:16:20,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 164.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-07 11:16:20,452 INFO L168 Benchmark]: Boogie Preprocessor took 613.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2018-08-07 11:16:20,453 INFO L168 Benchmark]: RCFGBuilder took 12360.46 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 161.0 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -15.9 MB). Peak memory consumption was 694.3 MB. Max. memory is 7.1 GB. [2018-08-07 11:16:20,454 INFO L168 Benchmark]: TraceAbstraction took 201826.14 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -107.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-08-07 11:16:20,458 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2535.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 164.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 613.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12360.46 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 161.0 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -15.9 MB). Peak memory consumption was 694.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201826.14 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -107.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4700]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4700). Cancelled while BasicCegarLoop was constructing difference of abstraction (251744states) and FLOYD_HOARE automaton (currently 36 states, 19 states before enhancement), while ReachableStatesComputation was computing reachable states (4821 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 201.7s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 140.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1743 SDtfs, 59438 SDslu, 3258 SDs, 0 SdLazy, 80871 SolverSat, 32421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26883 GetRequests, 26569 SyntacticMatches, 30 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4311 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251744occurred 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: 9.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 9296 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 29.6s InterpolantComputationTime, 22362 NumberOfCodeBlocks, 22362 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 35570 ConstructedInterpolants, 0 QuantifiedInterpolants, 79386409 SizeOfPredicates, 8 NumberOfNonLiveVariables, 18887 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 33 InterpolantComputations, 5 PerfectInterpolantSequences, 19218/20775 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/Problem04_label30_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_11-16-20-471.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label30_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_11-16-20-471.csv Completed graceful shutdown