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_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 22:37:04,814 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 22:37:04,816 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 22:37:04,830 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 22:37:04,830 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 22:37:04,831 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 22:37:04,833 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 22:37:04,834 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 22:37:04,836 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 22:37:04,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 22:37:04,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 22:37:04,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 22:37:04,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 22:37:04,840 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 22:37:04,841 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 22:37:04,843 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 22:37:04,844 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 22:37:04,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 22:37:04,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 22:37:04,853 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 22:37:04,854 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 22:37:04,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 22:37:04,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 22:37:04,858 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 22:37:04,858 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 22:37:04,859 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 22:37:04,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 22:37:04,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 22:37:04,862 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 22:37:04,863 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 22:37:04,863 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 22:37:04,864 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 22:37:04,864 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 22:37:04,864 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 22:37:04,865 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 22:37:04,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 22:37:04,866 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-11 22:37:04,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 22:37:04,882 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 22:37:04,883 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 22:37:04,883 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 22:37:04,884 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 22:37:04,884 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 22:37:04,884 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 22:37:04,884 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 22:37:04,884 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 22:37:04,885 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 22:37:04,885 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 22:37:04,885 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 22:37:04,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 22:37:04,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 22:37:04,886 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 22:37:04,886 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 22:37:04,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 22:37:04,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 22:37:04,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 22:37:04,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 22:37:04,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 22:37:04,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 22:37:04,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 22:37:04,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 22:37:04,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 22:37:04,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 22:37:04,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 22:37:04,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 22:37:04,891 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 22:37:04,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 22:37:04,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 22:37:04,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 22:37:04,893 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 22:37:04,893 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 22:37:04,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 22:37:04,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 22:37:04,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 22:37:04,966 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 22:37:04,966 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 22:37:04,967 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35_true-unreach-call_false-termination.c [2018-09-11 22:37:05,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553bcdbf2/1ec7898f8ee94640a43d08eda37d0dcb/FLAGac7e485ef [2018-09-11 22:37:05,642 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 22:37:05,643 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label35_true-unreach-call_false-termination.c [2018-09-11 22:37:05,681 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553bcdbf2/1ec7898f8ee94640a43d08eda37d0dcb/FLAGac7e485ef [2018-09-11 22:37:05,713 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553bcdbf2/1ec7898f8ee94640a43d08eda37d0dcb [2018-09-11 22:37:05,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 22:37:05,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 22:37:05,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 22:37:05,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 22:37:05,743 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 22:37:05,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:37:05" (1/1) ... [2018-09-11 22:37:05,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58150d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:05, skipping insertion in model container [2018-09-11 22:37:05,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:37:05" (1/1) ... [2018-09-11 22:37:05,978 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 22:37:06,298 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:37:06,320 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 22:37:06,488 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:37:06,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06 WrapperNode [2018-09-11 22:37:06,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 22:37:06,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 22:37:06,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 22:37:06,549 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 22:37:06,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 22:37:06,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 22:37:06,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 22:37:06,677 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 22:37:06,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 22:37:06,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 22:37:06,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 22:37:06,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 22:37:06,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (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 22:37:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-09-11 22:37:07,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-09-11 22:37:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 22:37:07,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 22:37:07,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 22:37:07,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 22:37:07,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 22:37:07,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 22:37:11,138 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 22:37:11,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:37:11 BoogieIcfgContainer [2018-09-11 22:37:11,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 22:37:11,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 22:37:11,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 22:37:11,143 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 22:37:11,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 10:37:05" (1/3) ... [2018-09-11 22:37:11,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b117bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:37:11, skipping insertion in model container [2018-09-11 22:37:11,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (2/3) ... [2018-09-11 22:37:11,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b117bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:37:11, skipping insertion in model container [2018-09-11 22:37:11,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:37:11" (3/3) ... [2018-09-11 22:37:11,148 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label35_true-unreach-call_false-termination.c [2018-09-11 22:37:11,158 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 22:37:11,168 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 22:37:11,220 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 22:37:11,221 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 22:37:11,221 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 22:37:11,222 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 22:37:11,222 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 22:37:11,222 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 22:37:11,223 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 22:37:11,224 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 22:37:11,224 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 22:37:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 22:37:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-11 22:37:11,268 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:11,269 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:37:11,271 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:37:11,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1424231809, now seen corresponding path program 1 times [2018-09-11 22:37:11,279 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:11,281 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-09-11 22:37:11,283 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [307], [309], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 22:37:11,345 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:11,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:37:13,482 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:37:13,484 INFO L272 AbstractInterpreter]: Visited 50 different actions 50 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 22:37:13,531 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:37:14,686 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 80.48% of their original sizes. [2018-09-11 22:37:14,686 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:37:14,979 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:37:14,981 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:37:14,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 22:37:14,981 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:37:14,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 22:37:14,995 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 22:37:14,996 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:37:14,999 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 22:37:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:37:21,350 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 22:37:21,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 22:37:21,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2018-09-11 22:37:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:37:21,372 INFO L225 Difference]: With dead ends: 693 [2018-09-11 22:37:21,373 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 22:37:21,380 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:37:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 22:37:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 22:37:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 22:37:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 22:37:21,492 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 51 [2018-09-11 22:37:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:37:21,494 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 22:37:21,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 22:37:21,495 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 22:37:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-11 22:37:21,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:21,507 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:21,507 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:37:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash 119544883, now seen corresponding path program 1 times [2018-09-11 22:37:21,508 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:21,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-09-11 22:37:21,510 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [307], [309], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:37:21,522 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:21,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:37:31,119 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:37:31,120 INFO L272 AbstractInterpreter]: Visited 92 different actions 177 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-11 22:37:31,155 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:37:33,898 INFO L232 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 78.51% of their original sizes. [2018-09-11 22:37:33,899 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:37:37,543 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:37:37,544 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:37:37,544 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-11 22:37:37,544 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:37:37,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-11 22:37:37,547 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-11 22:37:37,547 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-11 22:37:37,548 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 14 states. [2018-09-11 22:37:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:37:52,353 INFO L93 Difference]: Finished difference Result 1340 states and 2335 transitions. [2018-09-11 22:37:52,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-11 22:37:52,354 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2018-09-11 22:37:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:37:52,365 INFO L225 Difference]: With dead ends: 1340 [2018-09-11 22:37:52,365 INFO L226 Difference]: Without dead ends: 1095 [2018-09-11 22:37:52,369 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 24 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2018-09-11 22:37:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-09-11 22:37:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 850. [2018-09-11 22:37:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2018-09-11 22:37:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1058 transitions. [2018-09-11 22:37:52,425 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1058 transitions. Word has length 136 [2018-09-11 22:37:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:37:52,426 INFO L480 AbstractCegarLoop]: Abstraction has 850 states and 1058 transitions. [2018-09-11 22:37:52,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-11 22:37:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1058 transitions. [2018-09-11 22:37:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-11 22:37:52,432 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:52,432 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:52,432 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:37:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash 816452551, now seen corresponding path program 1 times [2018-09-11 22:37:52,433 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:52,433 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2018-09-11 22:37:52,434 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [307], [309], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:37:52,440 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:52,440 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:38:03,123 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:38:03,123 INFO L272 AbstractInterpreter]: Visited 118 different actions 230 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-11 22:38:03,134 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:38:04,974 INFO L232 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 78.31% of their original sizes. [2018-09-11 22:38:04,974 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:38:05,458 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:38:05,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:38:05,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 22:38:05,459 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:38:05,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 22:38:05,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 22:38:05,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-11 22:38:05,460 INFO L87 Difference]: Start difference. First operand 850 states and 1058 transitions. Second operand 12 states. [2018-09-11 22:38:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:38:13,465 INFO L93 Difference]: Finished difference Result 1283 states and 1842 transitions. [2018-09-11 22:38:13,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-11 22:38:13,470 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 162 [2018-09-11 22:38:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:38:13,482 INFO L225 Difference]: With dead ends: 1283 [2018-09-11 22:38:13,483 INFO L226 Difference]: Without dead ends: 1038 [2018-09-11 22:38:13,485 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-09-11 22:38:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-09-11 22:38:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1035. [2018-09-11 22:38:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2018-09-11 22:38:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1256 transitions. [2018-09-11 22:38:13,530 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1256 transitions. Word has length 162 [2018-09-11 22:38:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:38:13,530 INFO L480 AbstractCegarLoop]: Abstraction has 1035 states and 1256 transitions. [2018-09-11 22:38:13,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 22:38:13,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1256 transitions. [2018-09-11 22:38:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-11 22:38:13,544 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:38:13,545 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-11 22:38:13,545 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:38:13,546 INFO L82 PathProgramCache]: Analyzing trace with hash -815252589, now seen corresponding path program 1 times [2018-09-11 22:38:13,546 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:38:13,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-09-11 22:38:13,547 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [307], [309], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:38:13,563 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:38:13,564 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:38:42,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:38:42,223 INFO L272 AbstractInterpreter]: Visited 119 different actions 467 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-11 22:38:42,228 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:38:45,254 INFO L232 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 78.01% of their original sizes. [2018-09-11 22:38:45,254 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:38:50,670 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:38:50,670 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:38:50,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-11 22:38:50,671 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:38:50,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-11 22:38:50,673 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-11 22:38:50,673 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-09-11 22:38:50,673 INFO L87 Difference]: Start difference. First operand 1035 states and 1256 transitions. Second operand 16 states. [2018-09-11 22:39:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:39:09,569 INFO L93 Difference]: Finished difference Result 2597 states and 3738 transitions. [2018-09-11 22:39:09,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-11 22:39:09,571 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 247 [2018-09-11 22:39:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:39:09,584 INFO L225 Difference]: With dead ends: 2597 [2018-09-11 22:39:09,584 INFO L226 Difference]: Without dead ends: 1936 [2018-09-11 22:39:09,588 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 174 SyntacticMatches, 58 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2018-09-11 22:39:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2018-09-11 22:39:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1469. [2018-09-11 22:39:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2018-09-11 22:39:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1742 transitions. [2018-09-11 22:39:09,649 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1742 transitions. Word has length 247 [2018-09-11 22:39:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:39:09,649 INFO L480 AbstractCegarLoop]: Abstraction has 1469 states and 1742 transitions. [2018-09-11 22:39:09,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-11 22:39:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1742 transitions. [2018-09-11 22:39:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-11 22:39:09,655 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:39:09,655 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:39:09,656 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:39:09,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779054, now seen corresponding path program 1 times [2018-09-11 22:39:09,656 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:39:09,656 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 273 with the following transitions: [2018-09-11 22:39:09,657 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [307], [309], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:39:09,671 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:39:09,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown