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_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:38:43,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:38:43,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:38:43,407 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:38:43,408 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:38:43,409 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:38:43,410 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:38:43,412 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:38:43,413 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:38:43,414 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:38:43,415 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:38:43,415 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:38:43,416 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:38:43,417 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:38:43,418 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:38:43,419 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:38:43,420 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:38:43,423 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:38:43,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:38:43,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:38:43,434 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:38:43,438 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:38:43,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:38:43,440 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:38:43,440 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:38:43,441 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:38:43,442 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:38:43,443 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:38:43,443 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:38:43,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:38:43,445 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:38:43,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:38:43,446 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:38:43,446 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:38:43,447 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:38:43,448 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:38:43,448 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 11:38:43,462 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:38:43,463 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:38:43,463 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:38:43,464 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:38:43,464 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:38:43,464 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:38:43,464 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:38:43,464 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:38:43,465 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:38:43,465 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:38:43,465 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:38:43,466 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:38:43,466 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:38:43,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:38:43,466 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:38:43,467 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:38:43,467 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:38:43,467 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:38:43,467 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:38:43,467 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:38:43,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:38:43,468 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:38:43,468 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:38:43,468 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:38:43,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:38:43,469 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:38:43,469 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:38:43,469 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:38:43,469 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:38:43,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:38:43,470 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:38:43,470 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:38:43,470 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:38:43,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:38:43,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:38:43,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:38:43,534 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:38:43,534 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:38:43,535 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-09-11 11:38:43,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfb6b229/131d19570c764ca6af3944e7e2028805/FLAG643920a8d [2018-09-11 11:38:44,377 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:38:44,378 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-09-11 11:38:44,417 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfb6b229/131d19570c764ca6af3944e7e2028805/FLAG643920a8d [2018-09-11 11:38:44,440 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfb6b229/131d19570c764ca6af3944e7e2028805 [2018-09-11 11:38:44,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:38:44,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:38:44,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:38:44,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:38:44,469 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:38:44,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:38:44" (1/1) ... [2018-09-11 11:38:44,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560f8b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:44, skipping insertion in model container [2018-09-11 11:38:44,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:38:44" (1/1) ... [2018-09-11 11:38:44,858 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:38:45,912 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:38:45,930 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:38:46,545 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:38:46,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46 WrapperNode [2018-09-11 11:38:46,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:38:46,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:38:46,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:38:46,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:38:46,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:46,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:47,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:38:47,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:38:47,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:38:47,176 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:38:47,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:47,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:47,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:47,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:47,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:47,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:48,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (1/1) ... [2018-09-11 11:38:48,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:38:48,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:38:48,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:38:48,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:38:48,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (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 11:38:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:38:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:38:48,169 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 11:38:48,169 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 11:38:48,169 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 11:38:48,170 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 11:38:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:38:48,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:38:48,170 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 11:38:48,170 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 11:38:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:38:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:38:48,171 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 11:38:48,171 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 11:38:59,602 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:38:59,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:38:59 BoogieIcfgContainer [2018-09-11 11:38:59,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:38:59,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:38:59,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:38:59,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:38:59,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:38:44" (1/3) ... [2018-09-11 11:38:59,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddfe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:38:59, skipping insertion in model container [2018-09-11 11:38:59,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:38:46" (2/3) ... [2018-09-11 11:38:59,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddfe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:38:59, skipping insertion in model container [2018-09-11 11:38:59,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:38:59" (3/3) ... [2018-09-11 11:38:59,610 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label43_true-unreach-call.c [2018-09-11 11:38:59,618 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:38:59,628 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:38:59,688 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:38:59,689 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:38:59,689 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:38:59,689 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:38:59,689 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:38:59,689 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:38:59,689 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:38:59,689 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:38:59,690 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:38:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-11 11:38:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-11 11:38:59,736 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:38:59,737 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] [2018-09-11 11:38:59,738 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 11:38:59,744 INFO L82 PathProgramCache]: Analyzing trace with hash 814594732, now seen corresponding path program 1 times [2018-09-11 11:38:59,746 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:38:59,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-09-11 11:38:59,749 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], [285], [287], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-09-11 11:38:59,823 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:38:59,823 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:39:01,838 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:39:01,840 INFO L272 AbstractInterpreter]: Visited 47 different actions 47 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-11 11:39:01,869 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:39:02,696 INFO L232 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 77.64% of their original sizes. [2018-09-11 11:39:02,696 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:39:03,040 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:39:03,042 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:39:03,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:39:03,043 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:39:03,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:39:03,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:39:03,057 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:39:03,061 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-09-11 11:39:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:39:30,705 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-09-11 11:39:30,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:39:30,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2018-09-11 11:39:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:39:30,746 INFO L225 Difference]: With dead ends: 2448 [2018-09-11 11:39:30,747 INFO L226 Difference]: Without dead ends: 1606 [2018-09-11 11:39:30,756 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 47 GetRequests, 43 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 11:39:30,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-09-11 11:39:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-09-11 11:39:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-11 11:39:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-09-11 11:39:30,928 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 48 [2018-09-11 11:39:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:39:30,929 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-09-11 11:39:30,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:39:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-09-11 11:39:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-11 11:39:30,941 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:39:30,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:30,942 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 11:39:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1562875058, now seen corresponding path program 1 times [2018-09-11 11:39:30,943 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:39:30,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 125 with the following transitions: [2018-09-11 11:39:30,944 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], [285], [287], [290], [298], [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 11:39:30,953 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:39:30,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:39:41,366 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:39:41,366 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 11:39:41,373 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:39:45,152 INFO L232 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 76.09% of their original sizes. [2018-09-11 11:39:45,153 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:39:47,423 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:39:47,424 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:39:47,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:39:47,424 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:39:47,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:39:47,427 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:39:47,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:39:47,428 INFO L87 Difference]: Start difference. First operand 1604 states and 2357 transitions. Second operand 11 states. [2018-09-11 11:40:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:40:33,375 INFO L93 Difference]: Finished difference Result 3976 states and 6980 transitions. [2018-09-11 11:40:33,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 11:40:33,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2018-09-11 11:40:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:40:33,398 INFO L225 Difference]: With dead ends: 3976 [2018-09-11 11:40:33,398 INFO L226 Difference]: Without dead ends: 3146 [2018-09-11 11:40:33,404 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 130 GetRequests, 78 SyntacticMatches, 36 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:40:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2018-09-11 11:40:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3143. [2018-09-11 11:40:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2018-09-11 11:40:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3918 transitions. [2018-09-11 11:40:33,538 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3918 transitions. Word has length 124 [2018-09-11 11:40:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:40:33,539 INFO L480 AbstractCegarLoop]: Abstraction has 3143 states and 3918 transitions. [2018-09-11 11:40:33,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:40:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3918 transitions. [2018-09-11 11:40:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-11 11:40:33,554 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:40:33,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:33,557 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 11:40:33,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1811030814, now seen corresponding path program 1 times [2018-09-11 11:40:33,558 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:40:33,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-09-11 11:40:33,561 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], [285], [287], [290], [298], [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 11:40:33,573 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:40:33,573 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