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/Problem16_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 23:02:55,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 23:02:55,085 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 23:02:55,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 23:02:55,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 23:02:55,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 23:02:55,100 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 23:02:55,102 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 23:02:55,104 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 23:02:55,105 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 23:02:55,106 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 23:02:55,106 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 23:02:55,107 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 23:02:55,108 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 23:02:55,109 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 23:02:55,110 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 23:02:55,111 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 23:02:55,113 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 23:02:55,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 23:02:55,117 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 23:02:55,118 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 23:02:55,119 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 23:02:55,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 23:02:55,122 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 23:02:55,122 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 23:02:55,123 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 23:02:55,124 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 23:02:55,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 23:02:55,126 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 23:02:55,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 23:02:55,128 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 23:02:55,128 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 23:02:55,129 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 23:02:55,129 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 23:02:55,130 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 23:02:55,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 23:02:55,131 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 23:02:55,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 23:02:55,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 23:02:55,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 23:02:55,158 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 23:02:55,159 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 23:02:55,159 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 23:02:55,159 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 23:02:55,159 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 23:02:55,159 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 23:02:55,160 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 23:02:55,160 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 23:02:55,160 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 23:02:55,161 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 23:02:55,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 23:02:55,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 23:02:55,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 23:02:55,162 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 23:02:55,162 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 23:02:55,162 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 23:02:55,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 23:02:55,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 23:02:55,163 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 23:02:55,163 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 23:02:55,163 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 23:02:55,163 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 23:02:55,163 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 23:02:55,165 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 23:02:55,165 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 23:02:55,165 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 23:02:55,165 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 23:02:55,165 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 23:02:55,165 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 23:02:55,166 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 23:02:55,166 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 23:02:55,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 23:02:55,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 23:02:55,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 23:02:55,262 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 23:02:55,262 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 23:02:55,263 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-09-11 23:02:55,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7d88e/8b9ceb69fbc84df8b43655c7faab2e61/FLAG67042406d [2018-09-11 23:02:55,991 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 23:02:55,993 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-09-11 23:02:56,013 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7d88e/8b9ceb69fbc84df8b43655c7faab2e61/FLAG67042406d [2018-09-11 23:02:56,034 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7d88e/8b9ceb69fbc84df8b43655c7faab2e61 [2018-09-11 23:02:56,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 23:02:56,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 23:02:56,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 23:02:56,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 23:02:56,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 23:02:56,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:02:56" (1/1) ... [2018-09-11 23:02:56,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d96ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:56, skipping insertion in model container [2018-09-11 23:02:56,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:02:56" (1/1) ... [2018-09-11 23:02:56,302 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 23:02:56,805 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 23:02:56,823 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 23:02:57,071 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 23:02:57,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57 WrapperNode [2018-09-11 23:02:57,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 23:02:57,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 23:02:57,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 23:02:57,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 23:02:57,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 23:02:57,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 23:02:57,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 23:02:57,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 23:02:57,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (1/1) ... [2018-09-11 23:02:57,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 23:02:57,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 23:02:57,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 23:02:57,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 23:02:57,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (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 23:02:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 23:02:58,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 23:02:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-11 23:02:58,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-11 23:02:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 23:02:58,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 23:02:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 23:02:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 23:02:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-11 23:02:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-11 23:03:04,836 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 23:03:04,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:03:04 BoogieIcfgContainer [2018-09-11 23:03:04,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 23:03:04,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 23:03:04,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 23:03:04,842 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 23:03:04,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:02:56" (1/3) ... [2018-09-11 23:03:04,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4274941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:03:04, skipping insertion in model container [2018-09-11 23:03:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:02:57" (2/3) ... [2018-09-11 23:03:04,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4274941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:03:04, skipping insertion in model container [2018-09-11 23:03:04,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:03:04" (3/3) ... [2018-09-11 23:03:04,848 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label50_true-unreach-call.c [2018-09-11 23:03:04,858 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 23:03:04,869 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 23:03:04,931 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 23:03:04,931 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 23:03:04,932 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 23:03:04,932 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 23:03:04,932 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 23:03:04,932 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 23:03:04,932 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 23:03:04,933 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 23:03:04,933 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 23:03:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-11 23:03:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-11 23:03:04,977 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:03:04,978 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] [2018-09-11 23:03:04,979 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:03:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash -236557956, now seen corresponding path program 1 times [2018-09-11 23:03:04,986 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:03:04,987 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-09-11 23:03:04,989 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [1378], [1382], [1388], [1392], [1579], [1580], [1581], [1583] [2018-09-11 23:03:05,046 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 23:03:05,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 23:03:06,792 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 23:03:06,794 INFO L272 AbstractInterpreter]: Visited 51 different actions 51 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 23:03:06,809 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 23:03:07,663 INFO L232 lantSequenceWeakener]: Weakened 50 states. On average, predicates are now at 80.51% of their original sizes. [2018-09-11 23:03:07,663 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 23:03:08,061 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 23:03:08,063 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 23:03:08,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 23:03:08,064 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 23:03:08,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 23:03:08,076 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 23:03:08,077 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 23:03:08,080 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 6 states. [2018-09-11 23:03:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 23:03:22,109 INFO L93 Difference]: Finished difference Result 1158 states and 2145 transitions. [2018-09-11 23:03:22,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 23:03:22,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-09-11 23:03:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 23:03:22,139 INFO L225 Difference]: With dead ends: 1158 [2018-09-11 23:03:22,139 INFO L226 Difference]: Without dead ends: 746 [2018-09-11 23:03:22,150 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 23:03:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-09-11 23:03:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2018-09-11 23:03:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-11 23:03:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1075 transitions. [2018-09-11 23:03:22,262 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1075 transitions. Word has length 52 [2018-09-11 23:03:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 23:03:22,263 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1075 transitions. [2018-09-11 23:03:22,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 23:03:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1075 transitions. [2018-09-11 23:03:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-11 23:03:22,276 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:03:22,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:22,277 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:03:22,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1413468414, now seen corresponding path program 1 times [2018-09-11 23:03:22,277 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:03:22,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-09-11 23:03:22,279 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [1374], [1378], [1382], [1388], [1392], [1394], [1579], [1580], [1581], [1583], [1584] [2018-09-11 23:03:22,291 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 23:03:22,293 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