java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:42:36,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:42:36,754 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:42:36,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:42:36,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:42:36,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:42:36,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:42:36,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:42:36,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:42:36,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:42:36,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:42:36,785 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:42:36,786 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:42:36,788 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:42:36,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:42:36,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:42:36,790 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:42:36,792 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:42:36,794 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:42:36,796 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:42:36,797 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:42:36,798 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:42:36,801 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:42:36,801 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:42:36,801 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:42:36,802 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:42:36,803 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:42:36,804 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:42:36,805 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:42:36,806 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:42:36,806 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:42:36,807 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:42:36,807 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:42:36,807 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:42:36,808 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:42:36,809 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:42:36,809 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:42:36,834 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:42:36,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:42:36,835 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:42:36,835 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:42:36,836 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:42:36,836 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:42:36,836 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:42:36,836 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:42:36,836 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:42:36,837 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:42:36,837 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:42:36,838 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:42:36,838 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:42:36,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:42:36,838 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:42:36,838 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:42:36,838 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:42:36,839 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:42:36,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:42:36,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:42:36,839 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:42:36,839 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:42:36,840 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:42:36,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:42:36,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:42:36,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:42:36,840 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:42:36,841 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:42:36,841 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:42:36,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:42:36,841 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:42:36,841 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:42:36,842 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:42:36,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:42:36,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:42:36,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:42:36,917 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:42:36,918 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:42:36,919 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-09-10 11:42:37,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff95a8522/6ed881f1fbff47e38384c40e488a0751/FLAG78a50a15b [2018-09-10 11:42:37,726 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:42:37,727 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-09-10 11:42:37,758 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff95a8522/6ed881f1fbff47e38384c40e488a0751/FLAG78a50a15b [2018-09-10 11:42:37,774 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff95a8522/6ed881f1fbff47e38384c40e488a0751 [2018-09-10 11:42:37,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:42:37,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:42:37,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:42:37,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:42:37,797 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:42:37,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:42:37" (1/1) ... [2018-09-10 11:42:37,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec3b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:37, skipping insertion in model container [2018-09-10 11:42:37,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:42:37" (1/1) ... [2018-09-10 11:42:38,145 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:42:39,172 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:42:39,191 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:42:39,895 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:42:40,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40 WrapperNode [2018-09-10 11:42:40,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:42:40,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:42:40,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:42:40,125 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:42:40,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:40,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:40,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:42:40,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:42:40,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:42:40,377 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:42:40,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:40,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:40,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:40,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:41,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:41,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:41,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... [2018-09-10 11:42:41,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:42:41,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:42:41,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:42:41,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:42:41,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:42:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:42:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:42:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:42:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:42:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:42:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:42:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:42:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:42:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:42:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:42:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:42:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:42:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:42:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:42:54,960 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:42:54,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:42:54 BoogieIcfgContainer [2018-09-10 11:42:54,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:42:54,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:42:54,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:42:54,965 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:42:54,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:42:37" (1/3) ... [2018-09-10 11:42:54,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:42:54, skipping insertion in model container [2018-09-10 11:42:54,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:42:40" (2/3) ... [2018-09-10 11:42:54,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:42:54, skipping insertion in model container [2018-09-10 11:42:54,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:42:54" (3/3) ... [2018-09-10 11:42:54,968 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label05_true-unreach-call.c [2018-09-10 11:42:54,979 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:42:54,989 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:42:55,058 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:42:55,059 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:42:55,059 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:42:55,059 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:42:55,059 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:42:55,059 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:42:55,060 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:42:55,060 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:42:55,060 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:42:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:42:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-10 11:42:55,133 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:55,134 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] [2018-09-10 11:42:55,135 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:55,141 INFO L82 PathProgramCache]: Analyzing trace with hash -878392940, now seen corresponding path program 1 times [2018-09-10 11:42:55,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:55,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:55,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:55,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:55,198 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:42:55,590 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:42:55,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:42:55,590 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:42:55,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:42:55,612 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:42:55,613 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:42:55,615 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:43:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:05,983 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:43:05,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:43:05,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-09-10 11:43:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:06,021 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:43:06,021 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:43:06,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:43:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:43:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:43:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-10 11:43:06,206 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 66 [2018-09-10 11:43:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:06,207 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-10 11:43:06,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:43:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-10 11:43:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-10 11:43:06,226 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:06,226 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:43:06,227 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:06,227 INFO L82 PathProgramCache]: Analyzing trace with hash 714333242, now seen corresponding path program 1 times [2018-09-10 11:43:06,227 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:06,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:06,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:06,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:06,232 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:06,664 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:06,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:43:06,664 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:06,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:43:06,667 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:43:06,667 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:43:06,667 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-09-10 11:43:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:24,187 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-09-10 11:43:24,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:43:24,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-09-10 11:43:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:24,219 INFO L225 Difference]: With dead ends: 6329 [2018-09-10 11:43:24,219 INFO L226 Difference]: Without dead ends: 4731 [2018-09-10 11:43:24,229 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:43:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-09-10 11:43:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-09-10 11:43:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-09-10 11:43:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-09-10 11:43:24,384 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 140 [2018-09-10 11:43:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:24,385 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-09-10 11:43:24,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:43:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-09-10 11:43:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-10 11:43:24,396 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:24,396 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:43:24,401 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash -238687082, now seen corresponding path program 1 times [2018-09-10 11:43:24,401 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:24,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:24,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:24,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:24,404 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:43:24,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:24,772 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:24,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:24,782 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:24,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:43:24,984 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:43:25,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:43:25,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-10 11:43:25,462 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:25,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:43:25,463 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:43:25,469 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:43:25,469 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 4 states. [2018-09-10 11:43:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:33,275 INFO L93 Difference]: Finished difference Result 14065 states and 23050 transitions. [2018-09-10 11:43:33,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:43:33,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-09-10 11:43:33,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:33,323 INFO L225 Difference]: With dead ends: 14065 [2018-09-10 11:43:33,324 INFO L226 Difference]: Without dead ends: 9369 [2018-09-10 11:43:33,344 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 283 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:43:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2018-09-10 11:43:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 9369. [2018-09-10 11:43:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9369 states. [2018-09-10 11:43:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9369 states to 9369 states and 14250 transitions. [2018-09-10 11:43:33,566 INFO L78 Accepts]: Start accepts. Automaton has 9369 states and 14250 transitions. Word has length 142 [2018-09-10 11:43:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:33,567 INFO L480 AbstractCegarLoop]: Abstraction has 9369 states and 14250 transitions. [2018-09-10 11:43:33,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:43:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9369 states and 14250 transitions. [2018-09-10 11:43:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-09-10 11:43:33,573 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:33,574 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:43:33,574 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:33,574 INFO L82 PathProgramCache]: Analyzing trace with hash 160215914, now seen corresponding path program 1 times [2018-09-10 11:43:33,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:33,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:33,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:33,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:33,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:33,892 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:43:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:34,189 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:34,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:43:34,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:34,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:43:34,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:43:34,191 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:43:34,191 INFO L87 Difference]: Start difference. First operand 9369 states and 14250 transitions. Second operand 6 states. [2018-09-10 11:43:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:43,260 INFO L93 Difference]: Finished difference Result 22191 states and 34868 transitions. [2018-09-10 11:43:43,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:43:43,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-09-10 11:43:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:43,323 INFO L225 Difference]: With dead ends: 22191 [2018-09-10 11:43:43,323 INFO L226 Difference]: Without dead ends: 12828 [2018-09-10 11:43:43,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:43:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12828 states. [2018-09-10 11:43:43,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12828 to 12726. [2018-09-10 11:43:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12726 states. [2018-09-10 11:43:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12726 states to 12726 states and 18832 transitions. [2018-09-10 11:43:43,674 INFO L78 Accepts]: Start accepts. Automaton has 12726 states and 18832 transitions. Word has length 180 [2018-09-10 11:43:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:43,675 INFO L480 AbstractCegarLoop]: Abstraction has 12726 states and 18832 transitions. [2018-09-10 11:43:43,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:43:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12726 states and 18832 transitions. [2018-09-10 11:43:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-09-10 11:43:43,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:43,685 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:43,686 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:43,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1309475923, now seen corresponding path program 1 times [2018-09-10 11:43:43,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:43,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:43,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:43,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:43,687 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:43,950 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:43:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:43:44,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:44,164 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:44,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:44,180 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:44,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:43:44,716 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:43:44,956 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:43:44,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-10 11:43:44,956 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:44,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:43:44,957 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:43:44,957 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:43:44,957 INFO L87 Difference]: Start difference. First operand 12726 states and 18832 transitions. Second operand 5 states. [2018-09-10 11:43:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:54,067 INFO L93 Difference]: Finished difference Result 28977 states and 44260 transitions. [2018-09-10 11:43:54,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:43:54,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2018-09-10 11:43:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:54,135 INFO L225 Difference]: With dead ends: 28977 [2018-09-10 11:43:54,135 INFO L226 Difference]: Without dead ends: 16257 [2018-09-10 11:43:54,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 424 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:43:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16257 states. [2018-09-10 11:43:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16257 to 16159. [2018-09-10 11:43:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16159 states. [2018-09-10 11:43:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16159 states to 16159 states and 22323 transitions. [2018-09-10 11:43:54,527 INFO L78 Accepts]: Start accepts. Automaton has 16159 states and 22323 transitions. Word has length 215 [2018-09-10 11:43:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:54,527 INFO L480 AbstractCegarLoop]: Abstraction has 16159 states and 22323 transitions. [2018-09-10 11:43:54,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:43:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 16159 states and 22323 transitions. [2018-09-10 11:43:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-10 11:43:54,551 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:54,551 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:54,551 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash 215043252, now seen corresponding path program 1 times [2018-09-10 11:43:54,552 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:54,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:54,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:54,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:54,553 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 118 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:43:54,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:54,967 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:54,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:54,981 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:55,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:43:55,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 118 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:43:55,905 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:43:55,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:43:55,905 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:55,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:43:55,906 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:43:55,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:43:55,907 INFO L87 Difference]: Start difference. First operand 16159 states and 22323 transitions. Second operand 5 states. [2018-09-10 11:44:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:07,332 INFO L93 Difference]: Finished difference Result 42738 states and 60557 transitions. [2018-09-10 11:44:07,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:44:07,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-09-10 11:44:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:07,437 INFO L225 Difference]: With dead ends: 42738 [2018-09-10 11:44:07,437 INFO L226 Difference]: Without dead ends: 26585 [2018-09-10 11:44:07,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 566 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:44:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26585 states. [2018-09-10 11:44:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26585 to 26311. [2018-09-10 11:44:07,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26311 states. [2018-09-10 11:44:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26311 states to 26311 states and 35934 transitions. [2018-09-10 11:44:08,039 INFO L78 Accepts]: Start accepts. Automaton has 26311 states and 35934 transitions. Word has length 284 [2018-09-10 11:44:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:08,040 INFO L480 AbstractCegarLoop]: Abstraction has 26311 states and 35934 transitions. [2018-09-10 11:44:08,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:44:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 26311 states and 35934 transitions. [2018-09-10 11:44:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-09-10 11:44:08,077 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:08,078 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:08,078 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash -990524860, now seen corresponding path program 1 times [2018-09-10 11:44:08,078 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:08,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:08,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:08,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:08,079 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:08,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:44:08,623 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:44:08,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:08,638 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:44:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:08,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:44:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:08,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:44:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:09,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:44:09,338 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:44:09,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:09,355 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:44:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:09,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:44:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:09,661 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:44:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:09,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:44:09,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-10 11:44:09,831 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:44:09,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:44:09,832 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:44:09,832 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:44:09,833 INFO L87 Difference]: Start difference. First operand 26311 states and 35934 transitions. Second operand 9 states. [2018-09-10 11:44:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:44,514 INFO L93 Difference]: Finished difference Result 74559 states and 125916 transitions. [2018-09-10 11:44:44,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-10 11:44:44,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 292 [2018-09-10 11:44:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:44,759 INFO L225 Difference]: With dead ends: 74559 [2018-09-10 11:44:44,759 INFO L226 Difference]: Without dead ends: 48254 [2018-09-10 11:44:44,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1195 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=646, Invalid=2776, Unknown=0, NotChecked=0, Total=3422 [2018-09-10 11:44:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48254 states. [2018-09-10 11:44:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48254 to 47357. [2018-09-10 11:44:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47357 states. [2018-09-10 11:44:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47357 states to 47357 states and 60178 transitions. [2018-09-10 11:44:46,529 INFO L78 Accepts]: Start accepts. Automaton has 47357 states and 60178 transitions. Word has length 292 [2018-09-10 11:44:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:46,529 INFO L480 AbstractCegarLoop]: Abstraction has 47357 states and 60178 transitions. [2018-09-10 11:44:46,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:44:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 47357 states and 60178 transitions. [2018-09-10 11:44:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-10 11:44:46,565 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:46,566 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:46,566 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -426312497, now seen corresponding path program 1 times [2018-09-10 11:44:46,567 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:46,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:46,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:46,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:46,568 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:44:47,077 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:47,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:47,078 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:47,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:47,078 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:47,078 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:47,079 INFO L87 Difference]: Start difference. First operand 47357 states and 60178 transitions. Second operand 5 states. [2018-09-10 11:44:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:56,301 INFO L93 Difference]: Finished difference Result 139816 states and 183936 transitions. [2018-09-10 11:44:56,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:44:56,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2018-09-10 11:44:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:56,642 INFO L225 Difference]: With dead ends: 139816 [2018-09-10 11:44:56,642 INFO L226 Difference]: Without dead ends: 92465 [2018-09-10 11:44:56,787 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92465 states. [2018-09-10 11:44:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92465 to 91939. [2018-09-10 11:44:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91939 states. [2018-09-10 11:44:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91939 states to 91939 states and 111299 transitions. [2018-09-10 11:44:59,156 INFO L78 Accepts]: Start accepts. Automaton has 91939 states and 111299 transitions. Word has length 293 [2018-09-10 11:44:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:59,157 INFO L480 AbstractCegarLoop]: Abstraction has 91939 states and 111299 transitions. [2018-09-10 11:44:59,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:44:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 91939 states and 111299 transitions. [2018-09-10 11:44:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-09-10 11:44:59,184 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:59,185 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:59,185 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1929029435, now seen corresponding path program 1 times [2018-09-10 11:44:59,185 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:59,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:59,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:59,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:59,190 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:59,597 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-09-10 11:45:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 158 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:00,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:00,208 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:45:00,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:00,217 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:00,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:45:00,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 118 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:01,321 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:45:01,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-10 11:45:01,322 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:01,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:01,323 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:01,323 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:45:01,323 INFO L87 Difference]: Start difference. First operand 91939 states and 111299 transitions. Second operand 5 states. [2018-09-10 11:45:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:15,675 INFO L93 Difference]: Finished difference Result 199263 states and 236551 transitions. [2018-09-10 11:45:15,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 11:45:15,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2018-09-10 11:45:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:15,986 INFO L225 Difference]: With dead ends: 199263 [2018-09-10 11:45:15,986 INFO L226 Difference]: Without dead ends: 107330 [2018-09-10 11:45:16,167 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 631 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:45:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107330 states. [2018-09-10 11:45:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107330 to 106924. [2018-09-10 11:45:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106924 states. [2018-09-10 11:45:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106924 states to 106924 states and 123702 transitions. [2018-09-10 11:45:18,829 INFO L78 Accepts]: Start accepts. Automaton has 106924 states and 123702 transitions. Word has length 317 [2018-09-10 11:45:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:18,830 INFO L480 AbstractCegarLoop]: Abstraction has 106924 states and 123702 transitions. [2018-09-10 11:45:18,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 106924 states and 123702 transitions. [2018-09-10 11:45:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-10 11:45:18,850 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:18,851 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:18,851 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2053608711, now seen corresponding path program 1 times [2018-09-10 11:45:18,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:18,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:18,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:18,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:18,853 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 256 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:19,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:19,964 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:45:19,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:19,971 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:20,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 39 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:45:20,765 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 187 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:22,362 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:22,362 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 11:45:22,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:22,381 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:22,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 39 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-10 11:45:23,086 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 187 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:23,695 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:45:23,696 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 9] total 21 [2018-09-10 11:45:23,696 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:45:23,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:45:23,697 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:45:23,698 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-09-10 11:45:23,698 INFO L87 Difference]: Start difference. First operand 106924 states and 123702 transitions. Second operand 16 states. [2018-09-10 11:46:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:12,504 INFO L93 Difference]: Finished difference Result 231672 states and 267600 transitions. [2018-09-10 11:46:12,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-10 11:46:12,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 393 [2018-09-10 11:46:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:12,788 INFO L225 Difference]: With dead ends: 231672 [2018-09-10 11:46:12,788 INFO L226 Difference]: Without dead ends: 123649 [2018-09-10 11:46:12,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1649 GetRequests, 1591 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=709, Invalid=2153, Unknown=0, NotChecked=0, Total=2862 [2018-09-10 11:46:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123649 states. [2018-09-10 11:46:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123649 to 122506. [2018-09-10 11:46:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122506 states. [2018-09-10 11:46:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122506 states to 122506 states and 139241 transitions. [2018-09-10 11:46:15,473 INFO L78 Accepts]: Start accepts. Automaton has 122506 states and 139241 transitions. Word has length 393 [2018-09-10 11:46:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:15,473 INFO L480 AbstractCegarLoop]: Abstraction has 122506 states and 139241 transitions. [2018-09-10 11:46:15,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 11:46:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 122506 states and 139241 transitions. [2018-09-10 11:46:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-10 11:46:15,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:15,490 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:15,490 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:15,491 INFO L82 PathProgramCache]: Analyzing trace with hash 788458982, now seen corresponding path program 1 times [2018-09-10 11:46:15,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:15,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:15,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:15,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:15,492 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-10 11:46:16,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:16,162 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:46:16,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:16,179 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:16,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-10 11:46:16,471 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-10 11:46:16,665 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:16,665 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 11:46:16,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:16,682 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:17,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-10 11:46:17,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-10 11:46:17,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:46:17,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:46:17,854 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:46:17,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:46:17,855 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:46:17,855 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:46:17,855 INFO L87 Difference]: Start difference. First operand 122506 states and 139241 transitions. Second operand 9 states. Received shutdown request... [2018-09-10 11:46:29,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-10 11:46:29,292 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:46:29,297 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:46:29,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:46:29 BoogieIcfgContainer [2018-09-10 11:46:29,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:46:29,298 INFO L168 Benchmark]: Toolchain (without parser) took 231512.97 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -464.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-10 11:46:29,300 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:46:29,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2333.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:29,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 252.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:29,302 INFO L168 Benchmark]: Boogie Preprocessor took 933.26 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 921.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:29,303 INFO L168 Benchmark]: RCFGBuilder took 13650.20 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 152.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -122.0 MB). Peak memory consumption was 744.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:46:29,304 INFO L168 Benchmark]: TraceAbstraction took 214336.45 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 732.4 MB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 566.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-10 11:46:29,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2333.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 252.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 933.26 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 921.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13650.20 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 152.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -122.0 MB). Peak memory consumption was 744.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214336.45 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 732.4 MB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 566.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was constructing difference of abstraction (122506states) and FLOYD_HOARE automaton (currently 14 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (153338 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 214.2s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 186.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1747 SDtfs, 55009 SDslu, 3083 SDs, 0 SdLazy, 93668 SolverSat, 17916 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 152.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6639 GetRequests, 6426 SyntacticMatches, 26 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122506occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 3475 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 5946 NumberOfCodeBlocks, 5946 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9107 ConstructedInterpolants, 0 QuantifiedInterpolants, 16649087 SizeOfPredicates, 23 NumberOfNonLiveVariables, 5436 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 6597/7890 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-46-29-322.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-46-29-322.csv Completed graceful shutdown