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/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:54:36,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:54:36,140 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:54:36,155 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:54:36,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:54:36,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:54:36,157 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:54:36,159 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:54:36,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:54:36,161 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:54:36,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:54:36,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:54:36,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:54:36,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:54:36,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:54:36,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:54:36,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:54:36,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:54:36,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:54:36,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:54:36,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:54:36,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:54:36,179 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:54:36,179 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:54:36,180 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:54:36,181 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:54:36,184 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:54:36,185 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:54:36,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:54:36,189 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:54:36,189 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:54:36,190 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:54:36,190 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:54:36,190 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:54:36,191 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:54:36,193 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:54:36,194 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 11:54:36,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:54:36,221 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:54:36,222 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:54:36,222 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:54:36,223 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:54:36,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:54:36,223 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:54:36,223 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:54:36,224 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:54:36,224 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:54:36,224 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:54:36,225 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:54:36,225 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:54:36,225 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:54:36,225 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:54:36,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:54:36,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:54:36,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:54:36,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:54:36,227 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:54:36,227 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:54:36,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:54:36,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:54:36,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:54:36,228 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:54:36,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:54:36,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:54:36,229 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:54:36,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:54:36,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:54:36,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:54:36,230 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:54:36,230 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:54:36,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:54:36,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:54:36,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:54:36,298 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:54:36,298 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:54:36,299 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-09-11 11:54:36,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6869360/52a9541a27c143b99370173e5aa5c4ff/FLAGe7a558ede [2018-09-11 11:54:36,880 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:54:36,880 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-09-11 11:54:36,912 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6869360/52a9541a27c143b99370173e5aa5c4ff/FLAGe7a558ede [2018-09-11 11:54:36,934 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6869360/52a9541a27c143b99370173e5aa5c4ff [2018-09-11 11:54:36,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:54:36,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:54:36,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:54:36,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:54:36,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:54:36,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:54:36" (1/1) ... [2018-09-11 11:54:36,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc2c2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:36, skipping insertion in model container [2018-09-11 11:54:36,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:54:36" (1/1) ... [2018-09-11 11:54:37,211 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:54:37,506 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:54:37,524 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:54:37,717 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:54:37,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37 WrapperNode [2018-09-11 11:54:37,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:54:37,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:54:37,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:54:37,778 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:54:37,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:37,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:37,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:54:37,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:54:37,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:54:37,883 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:54:37,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:37,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:37,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:37,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:38,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:38,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:38,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (1/1) ... [2018-09-11 11:54:38,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:54:38,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:54:38,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:54:38,187 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:54:38,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (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 11:54:38,258 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 11:54:38,258 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 11:54:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:54:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:54:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:54:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:54:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:54:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:54:42,099 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:54:42,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:54:42 BoogieIcfgContainer [2018-09-11 11:54:42,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:54:42,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:54:42,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:54:42,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:54:42,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:54:36" (1/3) ... [2018-09-11 11:54:42,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c0eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:54:42, skipping insertion in model container [2018-09-11 11:54:42,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:37" (2/3) ... [2018-09-11 11:54:42,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c0eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:54:42, skipping insertion in model container [2018-09-11 11:54:42,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:54:42" (3/3) ... [2018-09-11 11:54:42,109 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-09-11 11:54:42,119 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:54:42,129 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:54:42,186 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:54:42,187 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:54:42,188 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:54:42,188 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:54:42,188 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:54:42,188 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:54:42,189 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:54:42,189 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:54:42,189 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:54:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 11:54:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-11 11:54:42,228 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:54:42,229 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:54:42,230 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 11:54:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash 696412100, now seen corresponding path program 1 times [2018-09-11 11:54:42,239 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:54:42,241 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 55 with the following transitions: [2018-09-11 11:54:42,244 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], [311], [319], [327], [331], [333], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 11:54:42,319 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:54:42,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:54:43,780 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:54:43,782 INFO L272 AbstractInterpreter]: Visited 53 different actions 53 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 11:54:43,796 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:54:44,561 INFO L232 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 80.56% of their original sizes. [2018-09-11 11:54:44,562 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:54:44,869 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:54:44,871 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:54:44,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:54:44,871 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:54:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:54:44,886 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:54:44,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:54:44,889 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 11:54:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:54:50,654 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 11:54:50,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:54:50,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2018-09-11 11:54:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:54:50,676 INFO L225 Difference]: With dead ends: 693 [2018-09-11 11:54:50,676 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 11:54:50,684 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 53 GetRequests, 49 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 11:54:50,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 11:54:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 11:54:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 11:54:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 11:54:50,769 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 54 [2018-09-11 11:54:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:54:50,770 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 11:54:50,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:54:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 11:54:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-11 11:54:50,778 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:54:50,778 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:50,779 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 11:54:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1365263727, now seen corresponding path program 1 times [2018-09-11 11:54:50,780 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:54:50,780 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-09-11 11:54:50,780 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], [311], [319], [327], [331], [333], [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 11:54:50,789 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:54:50,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:54:57,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:54:57,860 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 11:54:57,868 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:55:00,597 INFO L232 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 78.61% of their original sizes. [2018-09-11 11:55:00,597 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:55:02,341 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:55:02,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:55:02,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:55:02,342 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:55:02,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:55:02,345 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:55:02,346 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:55:02,346 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 11 states. [2018-09-11 11:55:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:55:12,624 INFO L93 Difference]: Finished difference Result 1051 states and 1763 transitions. [2018-09-11 11:55:12,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-11 11:55:12,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 139 [2018-09-11 11:55:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:55:12,634 INFO L225 Difference]: With dead ends: 1051 [2018-09-11 11:55:12,634 INFO L226 Difference]: Without dead ends: 806 [2018-09-11 11:55:12,637 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 145 GetRequests, 87 SyntacticMatches, 42 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:55:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-09-11 11:55:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2018-09-11 11:55:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-09-11 11:55:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1002 transitions. [2018-09-11 11:55:12,697 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1002 transitions. Word has length 139 [2018-09-11 11:55:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:55:12,699 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 1002 transitions. [2018-09-11 11:55:12,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:55:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1002 transitions. [2018-09-11 11:55:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-11 11:55:12,704 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:55:12,705 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:12,705 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 11:55:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash 890862397, now seen corresponding path program 1 times [2018-09-11 11:55:12,705 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:55:12,706 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2018-09-11 11:55:12,706 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], [311], [319], [327], [331], [333], [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 11:55:12,711 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:55:12,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:55:24,551 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:55:24,551 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 11:55:24,560 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:55:28,457 INFO L232 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 78.4% of their original sizes. [2018-09-11 11:55:28,458 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:55:29,853 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:55:29,853 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:55:29,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:55:29,854 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:55:29,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:55:29,855 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:55:29,855 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:55:29,856 INFO L87 Difference]: Start difference. First operand 803 states and 1002 transitions. Second operand 11 states. [2018-09-11 11:55:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:55:41,190 INFO L93 Difference]: Finished difference Result 1236 states and 1786 transitions. [2018-09-11 11:55:41,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 11:55:41,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2018-09-11 11:55:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:55:41,198 INFO L225 Difference]: With dead ends: 1236 [2018-09-11 11:55:41,199 INFO L226 Difference]: Without dead ends: 991 [2018-09-11 11:55:41,200 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 113 SyntacticMatches, 42 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-09-11 11:55:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-09-11 11:55:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-09-11 11:55:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-09-11 11:55:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1200 transitions. [2018-09-11 11:55:41,243 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1200 transitions. Word has length 165 [2018-09-11 11:55:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:55:41,244 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 1200 transitions. [2018-09-11 11:55:41,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:55:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1200 transitions. [2018-09-11 11:55:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-11 11:55:41,252 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:55:41,252 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:55:41,252 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 11:55:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash -209489712, now seen corresponding path program 1 times [2018-09-11 11:55:41,253 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:55:41,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-09-11 11:55:41,254 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], [311], [319], [327], [331], [333], [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 11:55:41,258 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:55:41,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:55:51,786 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:55:51,787 INFO L272 AbstractInterpreter]: Visited 119 different actions 352 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-11 11:55:51,794 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:55:53,309 INFO L232 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 78.04% of their original sizes. [2018-09-11 11:55:53,309 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:55:54,008 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:55:54,008 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:55:54,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-11 11:55:54,009 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:55:54,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-11 11:55:54,010 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-11 11:55:54,010 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-11 11:55:54,011 INFO L87 Difference]: Start difference. First operand 988 states and 1200 transitions. Second operand 15 states. [2018-09-11 11:56:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:56:10,198 INFO L93 Difference]: Finished difference Result 1967 states and 3058 transitions. [2018-09-11 11:56:10,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-11 11:56:10,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 250 [2018-09-11 11:56:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:56:10,215 INFO L225 Difference]: With dead ends: 1967 [2018-09-11 11:56:10,215 INFO L226 Difference]: Without dead ends: 1722 [2018-09-11 11:56:10,218 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2018-09-11 11:56:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2018-09-11 11:56:10,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1422. [2018-09-11 11:56:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2018-09-11 11:56:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1686 transitions. [2018-09-11 11:56:10,278 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1686 transitions. Word has length 250 [2018-09-11 11:56:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:56:10,279 INFO L480 AbstractCegarLoop]: Abstraction has 1422 states and 1686 transitions. [2018-09-11 11:56:10,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-11 11:56:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1686 transitions. [2018-09-11 11:56:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-09-11 11:56:10,285 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:56:10,286 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:56:10,286 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 11:56:10,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1977506609, now seen corresponding path program 1 times [2018-09-11 11:56:10,286 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:56:10,287 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-09-11 11:56:10,287 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], [311], [319], [327], [331], [333], [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 11:56:10,293 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:56:10,294 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