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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/eureka_05_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 13:06:01,089 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 13:06:01,090 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 13:06:01,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 13:06:01,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 13:06:01,105 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 13:06:01,106 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 13:06:01,110 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 13:06:01,112 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 13:06:01,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 13:06:01,114 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 13:06:01,114 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 13:06:01,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 13:06:01,116 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 13:06:01,117 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 13:06:01,118 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 13:06:01,119 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 13:06:01,121 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 13:06:01,123 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 13:06:01,124 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 13:06:01,125 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 13:06:01,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 13:06:01,131 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 13:06:01,131 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 13:06:01,131 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 13:06:01,132 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 13:06:01,133 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 13:06:01,134 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 13:06:01,135 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 13:06:01,136 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 13:06:01,136 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 13:06:01,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 13:06:01,137 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 13:06:01,137 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 13:06:01,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 13:06:01,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 13:06:01,139 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-11 13:06:01,163 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 13:06:01,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 13:06:01,164 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 13:06:01,164 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 13:06:01,165 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 13:06:01,166 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-11 13:06:01,166 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 13:06:01,166 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 13:06:01,167 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 13:06:01,168 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 13:06:01,169 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 13:06:01,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 13:06:01,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 13:06:01,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 13:06:01,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 13:06:01,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 13:06:01,171 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 13:06:01,171 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 13:06:01,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 13:06:01,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 13:06:01,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 13:06:01,172 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 13:06:01,172 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 13:06:01,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 13:06:01,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 13:06:01,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 13:06:01,280 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 13:06:01,280 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 13:06:01,281 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05_true-unreach-call_true-termination.i [2018-09-11 13:06:01,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1e48aff/324a78b898034bfda3cde469666b01b9/FLAG7db72f06a [2018-09-11 13:06:01,842 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 13:06:01,843 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05_true-unreach-call_true-termination.i [2018-09-11 13:06:01,851 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1e48aff/324a78b898034bfda3cde469666b01b9/FLAG7db72f06a [2018-09-11 13:06:01,870 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1e48aff/324a78b898034bfda3cde469666b01b9 [2018-09-11 13:06:01,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 13:06:01,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 13:06:01,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 13:06:01,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 13:06:01,893 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 13:06:01,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:06:01" (1/1) ... [2018-09-11 13:06:01,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541f7e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:01, skipping insertion in model container [2018-09-11 13:06:01,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:06:01" (1/1) ... [2018-09-11 13:06:02,052 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 13:06:02,088 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:06:02,110 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 13:06:02,118 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:06:02,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02 WrapperNode [2018-09-11 13:06:02,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 13:06:02,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 13:06:02,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 13:06:02,134 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 13:06:02,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 13:06:02,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 13:06:02,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 13:06:02,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 13:06:02,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 13:06:02,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 13:06:02,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 13:06:02,187 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 13:06:02,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (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 13:06:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 13:06:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 13:06:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i__SelectionSort [2018-09-11 13:06:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i__SelectionSort [2018-09-11 13:06:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 13:06:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 13:06:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 13:06:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 13:06:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 13:06:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 13:06:02,756 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 13:06:02,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:06:02 BoogieIcfgContainer [2018-09-11 13:06:02,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 13:06:02,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 13:06:02,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 13:06:02,761 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 13:06:02,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 01:06:01" (1/3) ... [2018-09-11 13:06:02,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a778ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:06:02, skipping insertion in model container [2018-09-11 13:06:02,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (2/3) ... [2018-09-11 13:06:02,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a778ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:06:02, skipping insertion in model container [2018-09-11 13:06:02,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:06:02" (3/3) ... [2018-09-11 13:06:02,765 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05_true-unreach-call_true-termination.i [2018-09-11 13:06:02,775 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 13:06:02,783 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 13:06:02,833 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 13:06:02,834 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 13:06:02,834 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 13:06:02,834 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 13:06:02,834 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 13:06:02,834 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 13:06:02,834 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 13:06:02,834 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 13:06:02,835 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 13:06:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-09-11 13:06:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 13:06:02,861 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:02,862 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:06:02,863 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:02,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1318846397, now seen corresponding path program 1 times [2018-09-11 13:06:02,872 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:02,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 13:06:02,876 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [35], [37], [41], [54], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 13:06:02,910 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:02,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:02,972 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:02,973 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-11 13:06:03,000 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:03,045 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 13:06:03,045 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:03,048 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:03,049 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:03,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 13:06:03,050 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:03,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 13:06:03,061 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 13:06:03,062 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 13:06:03,065 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-09-11 13:06:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:03,090 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2018-09-11 13:06:03,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 13:06:03,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-11 13:06:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:03,103 INFO L225 Difference]: With dead ends: 63 [2018-09-11 13:06:03,104 INFO L226 Difference]: Without dead ends: 32 [2018-09-11 13:06:03,108 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 13:06:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-11 13:06:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-11 13:06:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-11 13:06:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-09-11 13:06:03,147 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2018-09-11 13:06:03,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:03,148 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-09-11 13:06:03,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 13:06:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-09-11 13:06:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-11 13:06:03,150 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:03,150 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] [2018-09-11 13:06:03,150 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:03,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1884353144, now seen corresponding path program 1 times [2018-09-11 13:06:03,151 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:03,151 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-11 13:06:03,152 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [37], [41], [45], [48], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 13:06:03,153 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:03,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:03,164 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:03,165 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-11 13:06:03,184 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:03,196 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 38.89% of their original sizes. [2018-09-11 13:06:03,197 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:03,223 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:03,224 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:03,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-11 13:06:03,224 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:03,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-11 13:06:03,225 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-11 13:06:03,226 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 13:06:03,226 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2018-09-11 13:06:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:03,408 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-11 13:06:03,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 13:06:03,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-09-11 13:06:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:03,410 INFO L225 Difference]: With dead ends: 58 [2018-09-11 13:06:03,410 INFO L226 Difference]: Without dead ends: 35 [2018-09-11 13:06:03,412 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 13:06:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-11 13:06:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-09-11 13:06:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-11 13:06:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-09-11 13:06:03,420 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 21 [2018-09-11 13:06:03,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:03,421 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-09-11 13:06:03,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-11 13:06:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-09-11 13:06:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-11 13:06:03,422 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:03,422 INFO L376 BasicCegarLoop]: trace histogram [2, 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 13:06:03,423 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash 362283247, now seen corresponding path program 1 times [2018-09-11 13:06:03,423 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:03,423 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-11 13:06:03,424 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [37], [41], [45], [48], [50], [52], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 13:06:03,426 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:03,426 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:03,445 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:03,446 INFO L272 AbstractInterpreter]: Visited 14 different actions 34 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-11 13:06:03,460 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:03,486 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 40% of their original sizes. [2018-09-11 13:06:03,487 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:03,553 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:03,554 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:03,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 13:06:03,554 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:03,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 13:06:03,555 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 13:06:03,555 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 13:06:03,556 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2018-09-11 13:06:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:03,959 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-09-11 13:06:03,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 13:06:03,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-11 13:06:03,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:03,964 INFO L225 Difference]: With dead ends: 59 [2018-09-11 13:06:03,964 INFO L226 Difference]: Without dead ends: 46 [2018-09-11 13:06:03,965 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 13:06:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-11 13:06:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2018-09-11 13:06:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-11 13:06:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-11 13:06:03,977 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2018-09-11 13:06:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:03,977 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-11 13:06:03,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 13:06:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-11 13:06:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-11 13:06:03,979 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:03,979 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-11 13:06:03,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:03,980 INFO L82 PathProgramCache]: Analyzing trace with hash -314923675, now seen corresponding path program 1 times [2018-09-11 13:06:03,980 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:03,980 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-09-11 13:06:03,981 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [15], [18], [31], [33], [37], [41], [45], [48], [50], [52], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 13:06:03,983 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:03,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:03,996 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:03,996 INFO L272 AbstractInterpreter]: Visited 17 different actions 37 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-09-11 13:06:04,024 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:04,047 INFO L232 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 36.19% of their original sizes. [2018-09-11 13:06:04,048 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:04,099 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:04,099 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:04,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-11 13:06:04,099 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:04,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-11 13:06:04,100 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-11 13:06:04,100 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-11 13:06:04,101 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2018-09-11 13:06:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:04,352 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2018-09-11 13:06:04,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-11 13:06:04,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-09-11 13:06:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:04,354 INFO L225 Difference]: With dead ends: 71 [2018-09-11 13:06:04,354 INFO L226 Difference]: Without dead ends: 50 [2018-09-11 13:06:04,355 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-11 13:06:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-11 13:06:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2018-09-11 13:06:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-11 13:06:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-09-11 13:06:04,364 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-09-11 13:06:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:04,364 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-09-11 13:06:04,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-11 13:06:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-09-11 13:06:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-11 13:06:04,366 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:04,366 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-11 13:06:04,366 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1174102332, now seen corresponding path program 1 times [2018-09-11 13:06:04,367 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:04,367 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-09-11 13:06:04,367 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [15], [18], [20], [23], [27], [31], [33], [37], [41], [45], [48], [50], [52], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 13:06:04,369 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:04,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown