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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:28:35,974 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:28:35,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:28:35,992 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:28:35,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:28:35,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:28:35,996 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:28:35,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:28:36,000 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:28:36,001 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:28:36,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:28:36,004 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:28:36,006 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:28:36,007 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:28:36,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:28:36,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:28:36,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:28:36,014 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:28:36,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:28:36,029 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:28:36,031 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:28:36,034 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:28:36,038 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:28:36,041 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:28:36,041 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:28:36,042 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:28:36,043 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:28:36,044 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:28:36,048 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:28:36,049 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:28:36,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:28:36,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:28:36,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:28:36,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:28:36,054 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:28:36,055 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:28:36,056 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:28:36,085 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:28:36,085 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:28:36,087 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:28:36,087 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:28:36,087 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:28:36,087 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:28:36,088 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:28:36,090 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:28:36,090 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:28:36,091 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:28:36,091 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:28:36,091 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:28:36,091 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:28:36,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:28:36,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:28:36,093 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:28:36,093 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:28:36,093 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:28:36,093 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:28:36,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:28:36,094 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:28:36,094 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:28:36,094 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:28:36,094 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:28:36,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:28:36,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:28:36,097 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:28:36,097 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:28:36,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:28:36,097 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:28:36,098 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:28:36,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:28:36,098 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:28:36,098 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:28:36,098 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:28:36,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:28:36,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:28:36,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:28:36,190 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:28:36,190 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:28:36,191 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-11-12 19:28:36,257 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90705844/4a2ab7df1f2c446996898fbaf8e93a4a/FLAG917156dfc [2018-11-12 19:28:36,968 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:28:36,969 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-11-12 19:28:37,005 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90705844/4a2ab7df1f2c446996898fbaf8e93a4a/FLAG917156dfc [2018-11-12 19:28:37,028 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90705844/4a2ab7df1f2c446996898fbaf8e93a4a [2018-11-12 19:28:37,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:28:37,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:28:37,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:28:37,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:28:37,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:28:37,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:28:37" (1/1) ... [2018-11-12 19:28:37,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a05e19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:37, skipping insertion in model container [2018-11-12 19:28:37,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:28:37" (1/1) ... [2018-11-12 19:28:37,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:28:37,200 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:28:38,229 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:28:38,233 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:28:38,682 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:28:38,708 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:28:38,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38 WrapperNode [2018-11-12 19:28:38,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:28:38,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:28:38,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:28:38,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:28:38,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:38,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:38,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:28:38,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:28:38,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:28:38,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:28:38,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:38,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:39,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:39,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:39,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:39,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:39,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (1/1) ... [2018-11-12 19:28:39,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:28:39,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:28:39,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:28:39,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:28:39,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (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 [2018-11-12 19:28:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:28:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:28:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:28:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:28:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:28:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:28:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:28:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:28:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:28:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:28:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:28:48,866 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:28:48,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:28:48 BoogieIcfgContainer [2018-11-12 19:28:48,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:28:48,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:28:48,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:28:48,872 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:28:48,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:28:37" (1/3) ... [2018-11-12 19:28:48,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f14986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:28:48, skipping insertion in model container [2018-11-12 19:28:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:38" (2/3) ... [2018-11-12 19:28:48,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f14986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:28:48, skipping insertion in model container [2018-11-12 19:28:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:28:48" (3/3) ... [2018-11-12 19:28:48,876 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08_true-unreach-call.c [2018-11-12 19:28:48,887 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:28:48,898 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:28:48,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:28:48,969 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:28:48,969 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:28:48,969 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:28:48,969 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:28:48,969 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:28:48,970 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:28:48,970 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:28:48,970 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:28:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 19:28:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-12 19:28:49,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:49,019 INFO L375 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, 1, 1, 1] [2018-11-12 19:28:49,021 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:49,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash -494139234, now seen corresponding path program 1 times [2018-11-12 19:28:49,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:49,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:49,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:49,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:49,082 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:28:49,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:28:49,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:28:49,603 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:49,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:28:49,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:28:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:28:49,628 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 19:28:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:58,331 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-11-12 19:28:58,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:28:58,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-11-12 19:28:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:58,362 INFO L225 Difference]: With dead ends: 2139 [2018-11-12 19:28:58,362 INFO L226 Difference]: Without dead ends: 1529 [2018-11-12 19:28:58,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:28:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-11-12 19:28:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-11-12 19:28:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-11-12 19:28:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-11-12 19:28:58,539 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 65 [2018-11-12 19:28:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:58,540 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-11-12 19:28:58,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:28:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-11-12 19:28:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-12 19:28:58,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:58,553 INFO L375 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, 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] [2018-11-12 19:28:58,553 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:58,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:58,553 INFO L82 PathProgramCache]: Analyzing trace with hash 920040521, now seen corresponding path program 1 times [2018-11-12 19:28:58,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:58,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:58,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:58,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:58,555 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:28:59,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:59,296 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:59,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-12 19:28:59,299 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1130], [1132], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:28:59,350 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:59,350 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:59,847 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:00,665 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:29:00,666 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Performed 3925 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3925 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:29:00,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:00,712 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:29:00,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:00,713 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:29:00,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:00,728 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:29:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:00,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:29:16,977 WARN L179 SmtUtils]: Spent 15.57 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-12 19:29:17,415 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 23 [2018-11-12 19:29:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:17,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:29:18,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-12 19:29:19,294 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 28 [2018-11-12 19:29:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:19,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:29:19,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-12 19:29:19,710 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:19,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:29:19,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:29:19,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:29:19,713 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. Received shutdown request... [2018-11-12 19:33:05,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:33:05,979 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:33:05,984 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:33:05,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:33:05 BoogieIcfgContainer [2018-11-12 19:33:05,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:33:05,986 INFO L168 Benchmark]: Toolchain (without parser) took 268944.02 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -319.5 MB). Peak memory consumption was 779.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:05,987 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:33:05,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1664.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:05,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:05,991 INFO L168 Benchmark]: Boogie Preprocessor took 237.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:05,993 INFO L168 Benchmark]: RCFGBuilder took 9643.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 450.6 MB). Peak memory consumption was 450.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:05,993 INFO L168 Benchmark]: TraceAbstraction took 257116.26 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 329.3 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 30.6 MB). Peak memory consumption was 359.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:33:06,002 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1664.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9643.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 450.6 MB). Peak memory consumption was 450.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257116.26 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 329.3 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 30.6 MB). Peak memory consumption was 359.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 182]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 182). Cancelled while BasicCegarLoop was constructing difference of abstraction (1527states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (3816 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 257.0s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 235.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 664 SDtfs, 2127 SDslu, 522 SDs, 0 SdLazy, 5766 SolverSat, 1296 SolverUnsat, 109 SolverUnknown, 0 SolverNotchecked, 231.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1527occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.8s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 481 ConstructedInterpolants, 139 QuantifiedInterpolants, 988418 SizeOfPredicates, 3 NumberOfNonLiveVariables, 292 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 62/174 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown