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-ToothlessTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:37:15,629 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:37:15,631 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:37:15,646 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:37:15,647 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:37:15,648 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:37:15,649 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:37:15,651 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:37:15,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:37:15,654 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:37:15,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:37:15,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:37:15,656 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:37:15,657 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:37:15,659 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:37:15,659 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:37:15,660 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:37:15,662 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:37:15,665 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:37:15,666 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:37:15,668 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:37:15,669 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:37:15,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:37:15,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:37:15,674 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:37:15,676 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:37:15,677 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:37:15,680 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:37:15,681 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:37:15,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:37:15,686 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:37:15,687 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:37:15,687 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:37:15,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:37:15,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:37:15,691 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:37:15,691 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-11 11:37:15,714 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:37:15,714 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:37:15,715 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:37:15,715 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:37:15,716 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:37:15,716 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:37:15,716 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:37:15,716 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:37:15,717 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:37:15,717 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:37:15,717 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:37:15,718 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:37:15,718 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:37:15,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:37:15,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:37:15,719 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:37:15,719 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:37:15,719 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:37:15,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:37:15,720 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:37:15,720 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:37:15,720 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:37:15,720 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:37:15,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:37:15,721 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:37:15,721 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:37:15,721 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:37:15,721 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:37:15,721 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:37:15,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:37:15,722 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:37:15,722 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:37:15,722 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:37:15,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:37:15,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:37:15,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:37:15,812 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:37:15,813 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:37:15,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-09-11 11:37:16,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d41500d2/61455f7ee5af40ffa1758762157f9791/FLAG8473ec188 [2018-09-11 11:37:16,720 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:37:16,721 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-09-11 11:37:16,764 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d41500d2/61455f7ee5af40ffa1758762157f9791/FLAG8473ec188 [2018-09-11 11:37:16,790 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d41500d2/61455f7ee5af40ffa1758762157f9791 [2018-09-11 11:37:16,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:37:16,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:37:16,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:37:16,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:37:16,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:37:16,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:37:16" (1/1) ... [2018-09-11 11:37:16,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61217965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:16, skipping insertion in model container [2018-09-11 11:37:16,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:37:16" (1/1) ... [2018-09-11 11:37:17,200 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:37:18,220 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:37:18,242 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:37:19,148 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:37:19,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19 WrapperNode [2018-09-11 11:37:19,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:37:19,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:37:19,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:37:19,420 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:37:19,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:19,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:19,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:37:19,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:37:19,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:37:19,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:37:20,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (1/1) ... [2018-09-11 11:37:20,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:37:20,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:37:20,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:37:20,943 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:37:20,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (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 [2018-09-11 11:37:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:37:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:37:21,023 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 [2018-09-11 11:37:21,024 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 [2018-09-11 11:37:21,024 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 [2018-09-11 11:37:21,024 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 [2018-09-11 11:37:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:37:21,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:37:21,025 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 [2018-09-11 11:37:21,025 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 [2018-09-11 11:37:21,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:37:21,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:37:21,026 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 [2018-09-11 11:37:21,026 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 [2018-09-11 11:37:31,095 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:37:31,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:37:31 BoogieIcfgContainer [2018-09-11 11:37:31,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:37:31,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:37:31,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:37:31,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:37:31,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:37:16" (1/3) ... [2018-09-11 11:37:31,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19388f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:37:31, skipping insertion in model container [2018-09-11 11:37:31,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:37:19" (2/3) ... [2018-09-11 11:37:31,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19388f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:37:31, skipping insertion in model container [2018-09-11 11:37:31,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:37:31" (3/3) ... [2018-09-11 11:37:31,116 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label32_true-unreach-call.c [2018-09-11 11:37:31,126 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:37:31,140 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:37:31,212 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:37:31,213 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:37:31,213 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:37:31,213 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:37:31,214 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:37:31,214 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:37:31,214 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:37:31,214 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:37:31,214 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:37:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-11 11:37:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-11 11:37:31,289 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:37:31,291 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] [2018-09-11 11:37:31,292 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]=== [2018-09-11 11:37:31,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1141627988, now seen corresponding path program 1 times [2018-09-11 11:37:31,301 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:37:31,303 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-09-11 11:37:31,306 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-09-11 11:37:31,370 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:37:31,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:37:33,291 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:37:33,293 INFO L272 AbstractInterpreter]: Visited 49 different actions 49 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-11 11:37:33,339 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:37:34,344 INFO L232 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 77.7% of their original sizes. [2018-09-11 11:37:34,344 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:37:34,720 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:37:34,721 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:37:34,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:37:34,722 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:37:34,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:37:34,736 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:37:34,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:37:34,740 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-09-11 11:37:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:37:54,794 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-09-11 11:37:54,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:37:54,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2018-09-11 11:37:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:37:54,842 INFO L225 Difference]: With dead ends: 2448 [2018-09-11 11:37:54,843 INFO L226 Difference]: Without dead ends: 1606 [2018-09-11 11:37:54,858 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:37:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-09-11 11:37:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-09-11 11:37:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-11 11:37:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-09-11 11:37:55,078 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 50 [2018-09-11 11:37:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:37:55,080 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-09-11 11:37:55,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:37:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-09-11 11:37:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-11 11:37:55,092 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:37:55,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:37:55,093 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]=== [2018-09-11 11:37:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1766892630, now seen corresponding path program 1 times [2018-09-11 11:37:55,094 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:37:55,094 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-09-11 11:37:55,095 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [518], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-09-11 11:37:55,107 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:37:55,107 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:38:04,670 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:38:04,670 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-11 11:38:04,692 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:38:08,812 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 76.14% of their original sizes. [2018-09-11 11:38:08,813 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:38:11,044 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:38:11,045 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:38:11,045 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:38:11,045 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:38:11,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:38:11,048 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:38:11,048 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:38:11,049 INFO L87 Difference]: Start difference. First operand 1604 states and 2357 transitions. Second operand 11 states. [2018-09-11 11:39:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:39:12,631 INFO L93 Difference]: Finished difference Result 3976 states and 6980 transitions. [2018-09-11 11:39:12,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 11:39:12,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2018-09-11 11:39:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:39:12,647 INFO L225 Difference]: With dead ends: 3976 [2018-09-11 11:39:12,647 INFO L226 Difference]: Without dead ends: 3146 [2018-09-11 11:39:12,652 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 38 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:39:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2018-09-11 11:39:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3143. [2018-09-11 11:39:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2018-09-11 11:39:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3918 transitions. [2018-09-11 11:39:12,754 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3918 transitions. Word has length 126 [2018-09-11 11:39:12,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:39:12,755 INFO L480 AbstractCegarLoop]: Abstraction has 3143 states and 3918 transitions. [2018-09-11 11:39:12,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:39:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3918 transitions. [2018-09-11 11:39:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-11 11:39:12,772 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:39:12,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:39:12,773 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]=== [2018-09-11 11:39:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1477417194, now seen corresponding path program 1 times [2018-09-11 11:39:12,773 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:39:12,776 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-09-11 11:39:12,777 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-09-11 11:39:12,788 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:39:12,788 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown