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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:02:21,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:02:21,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:02:21,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:02:21,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:02:21,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:02:21,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:02:21,892 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:02:21,894 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:02:21,895 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:02:21,896 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:02:21,896 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:02:21,897 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:02:21,900 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:02:21,907 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:02:21,908 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:02:21,909 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:02:21,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:02:21,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:02:21,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:02:21,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:02:21,926 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:02:21,928 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:02:21,930 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:02:21,931 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:02:21,932 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:02:21,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:02:21,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:02:21,934 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:02:21,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:02:21,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:02:21,939 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:02:21,940 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:02:21,940 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:02:21,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:02:21,941 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:02:21,942 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:02:21,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:02:21,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:02:21,963 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:02:21,964 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:02:21,964 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:02:21,965 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:02:21,965 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:02:21,965 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:02:21,965 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:02:21,965 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:02:21,966 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:02:21,966 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:02:21,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:02:21,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:02:21,968 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:02:21,968 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:02:21,968 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:02:21,968 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:02:21,968 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:02:21,969 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:02:21,969 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:02:21,969 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:02:21,969 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:02:21,969 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:02:21,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:02:21,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:02:21,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:02:21,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:02:21,971 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:02:21,972 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:02:21,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:02:21,972 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:02:21,972 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:02:21,972 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:02:22,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:02:22,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:02:22,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:02:22,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:02:22,052 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:02:22,053 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c [2018-11-07 03:02:22,121 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74c85d97/8ee34494b41c464bada4a6f5c46bf86b/FLAG67604279c [2018-11-07 03:02:22,764 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:02:22,765 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c [2018-11-07 03:02:22,784 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74c85d97/8ee34494b41c464bada4a6f5c46bf86b/FLAG67604279c [2018-11-07 03:02:22,803 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74c85d97/8ee34494b41c464bada4a6f5c46bf86b [2018-11-07 03:02:22,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:02:22,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:02:22,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:02:22,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:02:22,823 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:02:22,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:02:22" (1/1) ... [2018-11-07 03:02:22,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eddc215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:22, skipping insertion in model container [2018-11-07 03:02:22,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:02:22" (1/1) ... [2018-11-07 03:02:22,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:02:22,929 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:02:23,680 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:02:23,685 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:02:23,889 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:02:23,911 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:02:23,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23 WrapperNode [2018-11-07 03:02:23,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:02:23,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:02:23,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:02:23,913 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:02:23,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:02:24,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:02:24,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:02:24,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:02:24,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (1/1) ... [2018-11-07 03:02:24,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:02:24,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:02:24,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:02:24,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:02:24,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (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 [2018-11-07 03:02:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:02:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:02:24,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:02:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:02:24,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:02:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:02:24,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:02:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:02:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:02:29,642 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:02:29,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:02:29 BoogieIcfgContainer [2018-11-07 03:02:29,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:02:29,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:02:29,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:02:29,647 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:02:29,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:02:22" (1/3) ... [2018-11-07 03:02:29,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647536d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:02:29, skipping insertion in model container [2018-11-07 03:02:29,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:23" (2/3) ... [2018-11-07 03:02:29,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647536d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:02:29, skipping insertion in model container [2018-11-07 03:02:29,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:02:29" (3/3) ... [2018-11-07 03:02:29,655 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label53_true-unreach-call.c [2018-11-07 03:02:29,666 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:02:29,676 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:02:29,695 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:02:29,743 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:02:29,744 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:02:29,744 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:02:29,744 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:02:29,744 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:02:29,744 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:02:29,744 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:02:29,745 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:02:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 03:02:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 03:02:29,784 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:02:29,785 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] [2018-11-07 03:02:29,788 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:02:29,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:02:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1916491172, now seen corresponding path program 1 times [2018-11-07 03:02:29,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:02:29,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:29,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:02:29,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:29,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:02:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:02:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:02:30,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:02:30,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:02:30,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:02:30,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:02:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:02:30,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:02:30,439 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 03:02:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:02:34,471 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-11-07 03:02:34,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:02:34,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 03:02:34,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:02:34,497 INFO L225 Difference]: With dead ends: 1001 [2018-11-07 03:02:34,497 INFO L226 Difference]: Without dead ends: 702 [2018-11-07 03:02:34,506 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 [2018-11-07 03:02:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-11-07 03:02:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-11-07 03:02:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-11-07 03:02:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-11-07 03:02:34,616 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 54 [2018-11-07 03:02:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:02:34,617 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-11-07 03:02:34,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:02:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-11-07 03:02:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 03:02:34,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:02:34,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:02:34,626 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:02:34,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:02:34,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1310907987, now seen corresponding path program 1 times [2018-11-07 03:02:34,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:02:34,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:34,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:02:34,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:34,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:02:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:02:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:02:35,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:02:35,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:02:35,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:02:35,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:02:35,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:02:35,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:02:35,013 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-11-07 03:02:40,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:02:40,011 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-11-07 03:02:40,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:02:40,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 03:02:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:02:40,035 INFO L225 Difference]: With dead ends: 2534 [2018-11-07 03:02:40,035 INFO L226 Difference]: Without dead ends: 1841 [2018-11-07 03:02:40,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:02:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-11-07 03:02:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-11-07 03:02:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-11-07 03:02:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-11-07 03:02:40,156 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 127 [2018-11-07 03:02:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:02:40,157 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-11-07 03:02:40,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:02:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-11-07 03:02:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 03:02:40,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:02:40,179 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:02:40,179 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:02:40,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:02:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1917313452, now seen corresponding path program 1 times [2018-11-07 03:02:40,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:02:40,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:40,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:02:40,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:40,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:02:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:02:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 03:02:40,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:02:40,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:02:40,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:02:40,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:02:40,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:02:40,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:02:40,722 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-11-07 03:02:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:02:44,220 INFO L93 Difference]: Finished difference Result 4749 states and 7412 transitions. [2018-11-07 03:02:44,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:02:44,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-11-07 03:02:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:02:44,246 INFO L225 Difference]: With dead ends: 4749 [2018-11-07 03:02:44,246 INFO L226 Difference]: Without dead ends: 2940 [2018-11-07 03:02:44,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:02:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2018-11-07 03:02:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2927. [2018-11-07 03:02:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2018-11-07 03:02:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4052 transitions. [2018-11-07 03:02:44,363 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4052 transitions. Word has length 230 [2018-11-07 03:02:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:02:44,364 INFO L480 AbstractCegarLoop]: Abstraction has 2927 states and 4052 transitions. [2018-11-07 03:02:44,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:02:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4052 transitions. [2018-11-07 03:02:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 03:02:44,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:02:44,375 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:02:44,376 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:02:44,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:02:44,376 INFO L82 PathProgramCache]: Analyzing trace with hash -20907064, now seen corresponding path program 1 times [2018-11-07 03:02:44,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:02:44,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:44,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:02:44,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:02:44,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:02:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:02:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:02:45,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:02:45,027 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:02:45,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 03:02:45,032 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], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 03:02:45,133 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:02:45,134 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:02:47,508 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:02:50,160 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:02:50,162 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 03:02:50,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:02:50,206 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:02:53,651 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 73.67% of their original sizes. [2018-11-07 03:02:53,651 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:02:54,140 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 03:02:54,140 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:02:54,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:02:54,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:02:54,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:02:54,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:02:54,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:02:54,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:02:54,143 INFO L87 Difference]: Start difference. First operand 2927 states and 4052 transitions. Second operand 7 states. [2018-11-07 03:03:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:03:48,948 INFO L93 Difference]: Finished difference Result 6040 states and 8357 transitions. [2018-11-07 03:03:48,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:03:48,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2018-11-07 03:03:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:03:48,966 INFO L225 Difference]: With dead ends: 6040 [2018-11-07 03:03:48,966 INFO L226 Difference]: Without dead ends: 3119 [2018-11-07 03:03:48,976 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:03:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2018-11-07 03:03:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3117. [2018-11-07 03:03:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2018-11-07 03:03:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4252 transitions. [2018-11-07 03:03:49,080 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4252 transitions. Word has length 236 [2018-11-07 03:03:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:03:49,080 INFO L480 AbstractCegarLoop]: Abstraction has 3117 states and 4252 transitions. [2018-11-07 03:03:49,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:03:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4252 transitions. [2018-11-07 03:03:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-07 03:03:49,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:03:49,090 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:03:49,091 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:03:49,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:03:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1343138969, now seen corresponding path program 1 times [2018-11-07 03:03:49,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:03:49,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:03:49,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:03:49,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:03:49,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:03:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:03:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:03:49,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:03:49,764 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:03:49,765 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-11-07 03:03:49,765 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], [321], [329], [333], [335], [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], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 03:03:49,776 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:03:49,776 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:03:55,911 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:04:07,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:04:07,295 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 03:04:07,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:04:07,306 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:04:10,632 INFO L227 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 76.55% of their original sizes. [2018-11-07 03:04:10,633 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:04:32,732 INFO L415 sIntCurrentIteration]: We unified 288 AI predicates to 288 [2018-11-07 03:04:32,732 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:04:32,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:04:32,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 03:04:32,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:04:32,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 03:04:32,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 03:04:32,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-11-07 03:04:32,735 INFO L87 Difference]: Start difference. First operand 3117 states and 4252 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 03:06:09,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 03:06:09,486 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:06:09,492 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:06:09,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:06:09 BoogieIcfgContainer [2018-11-07 03:06:09,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:06:09,494 INFO L168 Benchmark]: Toolchain (without parser) took 226678.71 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -952.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 03:06:09,495 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. [2018-11-07 03:06:09,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1095.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:06:09,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 174.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:06:09,498 INFO L168 Benchmark]: Boogie Preprocessor took 163.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:06:09,498 INFO L168 Benchmark]: RCFGBuilder took 5391.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.7 MB). Peak memory consumption was 170.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:06:09,501 INFO L168 Benchmark]: TraceAbstraction took 219849.10 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -339.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 03:06:09,506 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 1095.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 174.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5391.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.7 MB). Peak memory consumption was 170.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219849.10 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -339.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (3117states) and FLOYD_HOARE automaton (currently 19 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (291 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 219.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 164.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1228 SDtfs, 3203 SDslu, 937 SDs, 0 SdLazy, 6216 SolverSat, 1237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 556 GetRequests, 499 SyntacticMatches, 9 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3117occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961455582870499 AbsIntWeakeningRatio, 0.10707456978967496 AbsIntAvgWeakeningVarsNumRemoved, 1096.751434034417 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 936 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 931 ConstructedInterpolants, 0 QuantifiedInterpolants, 617515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 581/585 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown