java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:31:38,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:31:38,862 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:31:38,877 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:31:38,878 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:31:38,880 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:31:38,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:31:38,885 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:31:38,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:31:38,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:31:38,891 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:31:38,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:31:38,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:31:38,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:31:38,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:31:38,897 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:31:38,899 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:31:38,901 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:31:38,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:31:38,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:31:38,907 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:31:38,908 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:31:38,910 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 15:31:38,921 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 15:31:38,938 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:31:38,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:31:38,942 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:31:38,943 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:31:38,943 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:31:38,943 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:31:38,943 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 15:31:38,944 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:31:38,944 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:31:38,944 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 15:31:38,944 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:31:38,944 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:31:38,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:31:38,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:31:38,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:31:38,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:31:38,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:31:38,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:31:38,952 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:31:38,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:31:38,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:31:38,955 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:31:38,955 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:31:38,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:31:38,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:31:38,955 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:31:38,956 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:31:38,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:31:38,956 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:31:38,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:31:38,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:31:38,957 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:31:38,957 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:31:38,957 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:31:39,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:31:39,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:31:39,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:31:39,043 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:31:39,043 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:31:39,044 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c [2018-09-15 15:31:39,461 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416ae43f5/8db93f81c3694996963a17c4c31780a3/FLAG615424134 [2018-09-15 15:31:40,093 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:31:40,094 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c [2018-09-15 15:31:40,130 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416ae43f5/8db93f81c3694996963a17c4c31780a3/FLAG615424134 [2018-09-15 15:31:40,150 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416ae43f5/8db93f81c3694996963a17c4c31780a3 [2018-09-15 15:31:40,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:31:40,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:31:40,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:31:40,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:31:40,197 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:31:40,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:31:40" (1/1) ... [2018-09-15 15:31:40,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eb0580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:40, skipping insertion in model container [2018-09-15 15:31:40,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:31:40" (1/1) ... [2018-09-15 15:31:40,216 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:31:41,475 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:31:41,493 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:31:41,933 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:31:42,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42 WrapperNode [2018-09-15 15:31:42,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:31:42,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:31:42,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:31:42,083 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:31:42,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:31:42,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:31:42,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:31:42,281 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:31:42,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (1/1) ... [2018-09-15 15:31:42,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:31:42,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:31:42,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:31:42,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:31:42,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (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 [2018-09-15 15:31:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:31:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:31:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-15 15:31:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-15 15:31:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 15:31:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 15:31:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 15:31:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 15:31:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:31:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:31:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:31:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:31:51,959 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:31:51,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:31:51 BoogieIcfgContainer [2018-09-15 15:31:51,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:31:51,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:31:51,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:31:51,967 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:31:51,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:31:40" (1/3) ... [2018-09-15 15:31:51,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acaa828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:31:51, skipping insertion in model container [2018-09-15 15:31:51,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:31:42" (2/3) ... [2018-09-15 15:31:51,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acaa828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:31:51, skipping insertion in model container [2018-09-15 15:31:51,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:31:51" (3/3) ... [2018-09-15 15:31:51,971 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label23_true-unreach-call.c [2018-09-15 15:31:51,980 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:31:51,991 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:31:52,053 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:31:52,054 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:31:52,054 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:31:52,054 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:31:52,054 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:31:52,054 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:31:52,055 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:31:52,055 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:31:52,055 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:31:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-15 15:31:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-15 15:31:52,105 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:31:52,106 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:31:52,107 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:31:52,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1417281084, now seen corresponding path program 1 times [2018-09-15 15:31:52,113 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:31:52,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 63 with the following transitions: [2018-09-15 15:31:52,116 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2019], [2021], [3000], [3004], [3010], [3014], [3025], [3026], [3027], [3029] [2018-09-15 15:31:52,155 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:31:52,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:31:53,049 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:31:53,051 INFO L272 AbstractInterpreter]: Visited 61 different actions 61 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 15:31:53,097 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:31:53,619 INFO L232 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 80.4% of their original sizes. [2018-09-15 15:31:53,619 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:31:53,839 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:31:53,841 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:31:53,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 15:31:53,841 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:31:53,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 15:31:53,853 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 15:31:53,854 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:31:53,857 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 6 states. [2018-09-15 15:32:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:32:04,038 INFO L93 Difference]: Finished difference Result 2253 states and 4323 transitions. [2018-09-15 15:32:04,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 15:32:04,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2018-09-15 15:32:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:32:04,076 INFO L225 Difference]: With dead ends: 2253 [2018-09-15 15:32:04,077 INFO L226 Difference]: Without dead ends: 1476 [2018-09-15 15:32:04,088 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:32:04,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2018-09-15 15:32:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1474. [2018-09-15 15:32:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-15 15:32:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2167 transitions. [2018-09-15 15:32:04,258 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2167 transitions. Word has length 62 [2018-09-15 15:32:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:32:04,259 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2167 transitions. [2018-09-15 15:32:04,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 15:32:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2167 transitions. [2018-09-15 15:32:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-15 15:32:04,275 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:32:04,275 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:32:04,276 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:32:04,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1117999015, now seen corresponding path program 1 times [2018-09-15 15:32:04,276 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:32:04,277 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-09-15 15:32:04,278 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2019], [2021], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-09-15 15:32:04,293 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:32:04,294 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)