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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:03:13,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:03:13,101 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:03:13,113 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:03:13,114 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:03:13,115 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:03:13,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:03:13,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:03:13,122 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:03:13,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:03:13,124 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:03:13,124 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:03:13,125 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:03:13,126 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:03:13,127 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:03:13,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:03:13,129 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:03:13,131 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:03:13,133 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:03:13,134 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:03:13,135 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:03:13,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:03:13,139 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:03:13,139 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:03:13,139 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:03:13,140 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:03:13,141 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:03:13,142 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:03:13,143 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:03:13,144 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:03:13,144 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:03:13,145 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 12:03:13,148 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.epf [2018-11-07 12:03:13,168 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:03:13,170 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:03:13,171 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:03:13,171 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:03:13,171 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:03:13,171 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:03:13,171 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:03:13,172 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:03:13,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:03:13,173 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:03:13,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:03:13,173 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:03:13,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:03:13,174 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:03:13,174 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:03:13,176 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:03:13,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:03:13,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:03:13,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:03:13,177 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:03:13,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:03:13,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:03:13,178 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:03:13,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:03:13,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:03:13,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:03:13,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:03:13,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:03:13,179 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:03:13,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:03:13,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:03:13,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:03:13,180 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:03:13,180 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:03:13,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:03:13,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:03:13,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:03:13,259 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:03:13,259 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:03:13,260 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-11-07 12:03:13,321 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bd16fea/caa265330176404b9bf16b4bd8b2c5c0/FLAG1d6b2602a [2018-11-07 12:03:13,888 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:03:13,889 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-11-07 12:03:13,911 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bd16fea/caa265330176404b9bf16b4bd8b2c5c0/FLAG1d6b2602a [2018-11-07 12:03:13,932 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16bd16fea/caa265330176404b9bf16b4bd8b2c5c0 [2018-11-07 12:03:13,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:03:13,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:03:13,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:03:13,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:03:13,954 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:03:13,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:03:13" (1/1) ... [2018-11-07 12:03:13,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d88b783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:13, skipping insertion in model container [2018-11-07 12:03:13,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:03:13" (1/1) ... [2018-11-07 12:03:13,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:03:14,052 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:03:14,644 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:03:14,649 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:03:14,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:03:14,794 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:03:14,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14 WrapperNode [2018-11-07 12:03:14,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:03:14,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:03:14,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:03:14,796 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:03:14,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:14,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:14,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:03:14,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:03:14,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:03:14,949 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:03:14,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:14,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:14,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:14,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:15,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:15,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:15,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (1/1) ... [2018-11-07 12:03:15,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:03:15,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:03:15,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:03:15,064 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:03:15,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (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 12:03:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:03:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:03:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:03:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:03:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:03:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:03:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:03:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:03:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:03:18,845 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:03:18,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:03:18 BoogieIcfgContainer [2018-11-07 12:03:18,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:03:18,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:03:18,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:03:18,851 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:03:18,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:03:13" (1/3) ... [2018-11-07 12:03:18,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44885785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:03:18, skipping insertion in model container [2018-11-07 12:03:18,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:14" (2/3) ... [2018-11-07 12:03:18,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44885785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:03:18, skipping insertion in model container [2018-11-07 12:03:18,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:03:18" (3/3) ... [2018-11-07 12:03:18,856 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label39_false-unreach-call_false-termination.c [2018-11-07 12:03:18,867 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:03:18,878 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:03:18,896 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:03:18,937 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:03:18,937 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:03:18,938 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:03:18,938 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:03:18,938 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:03:18,938 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:03:18,939 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:03:18,939 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:03:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 12:03:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 12:03:18,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:03:18,978 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] [2018-11-07 12:03:18,981 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:03:18,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:03:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1823937900, now seen corresponding path program 1 times [2018-11-07 12:03:18,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:03:19,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:03:19,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:03:19,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:03:19,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:03:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:03:19,477 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 12:03:19,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:03:19,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:03:19,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:03:19,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:03:19,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:03:19,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:03:19,507 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 12:03:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:03:21,675 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 12:03:21,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:03:21,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 12:03:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:03:21,699 INFO L225 Difference]: With dead ends: 691 [2018-11-07 12:03:21,699 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 12:03:21,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:03:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 12:03:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 12:03:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 12:03:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 12:03:21,799 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 32 [2018-11-07 12:03:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:03:21,800 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 12:03:21,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:03:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 12:03:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 12:03:21,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:03:21,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:21,808 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:03:21,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:03:21,809 INFO L82 PathProgramCache]: Analyzing trace with hash -319610313, now seen corresponding path program 1 times [2018-11-07 12:03:21,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:03:21,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:03:21,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:03:21,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:03:21,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:03:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:03:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:03:22,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:03:22,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:03:22,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:03:22,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:03:22,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:03:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:03:22,225 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 12:03:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:03:24,346 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 12:03:24,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:03:24,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-11-07 12:03:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:03:24,357 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 12:03:24,358 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 12:03:24,360 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 12:03:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 12:03:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 12:03:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 12:03:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 12:03:24,403 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 119 [2018-11-07 12:03:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:03:24,404 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 12:03:24,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:03:24,404 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 12:03:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 12:03:24,408 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:03:24,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:24,408 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:03:24,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:03:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1728515332, now seen corresponding path program 1 times [2018-11-07 12:03:24,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:03:24,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:03:24,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:03:24,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:03:24,411 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:03:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:03:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:03:24,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:03:24,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:03:24,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-11-07 12:03:24,840 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], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:03:24,886 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:03:24,887 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:03:25,431 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:03:25,433 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:03:25,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:03:25,469 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:03:25,965 INFO L227 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-07 12:03:25,965 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:03:26,222 INFO L415 sIntCurrentIteration]: We unified 127 AI predicates to 127 [2018-11-07 12:03:26,223 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:03:26,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:03:26,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 12:03:26,224 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:03:26,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:03:26,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:03:26,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:03:26,226 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 7 states. [2018-11-07 12:03:28,537 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:07:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:07:07,679 INFO L93 Difference]: Finished difference Result 1429 states and 2328 transitions. [2018-11-07 12:07:07,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:07:07,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2018-11-07 12:07:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:07:07,685 INFO L225 Difference]: With dead ends: 1429 [2018-11-07 12:07:07,685 INFO L226 Difference]: Without dead ends: 810 [2018-11-07 12:07:07,687 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:07:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-11-07 12:07:07,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2018-11-07 12:07:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2018-11-07 12:07:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1209 transitions. [2018-11-07 12:07:07,722 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1209 transitions. Word has length 128 [2018-11-07 12:07:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:07:07,723 INFO L480 AbstractCegarLoop]: Abstraction has 808 states and 1209 transitions. [2018-11-07 12:07:07,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:07:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1209 transitions. [2018-11-07 12:07:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 12:07:07,733 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:07:07,733 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, 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] [2018-11-07 12:07:07,734 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:07:07,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1027226283, now seen corresponding path program 1 times [2018-11-07 12:07:07,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:07:07,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:07:07,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:07:07,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:07:07,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:07:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:07:08,238 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:07:08,426 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 12:07:08,639 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:07:09,085 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 12:07:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:07:09,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:07:09,461 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:07:09,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-11-07 12:07:09,461 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], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:07:09,466 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:07:09,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:07:09,630 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 12:07:09,630 INFO L272 AbstractInterpreter]: Visited 105 different actions 202 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 12:07:09,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:09,637 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 12:07:09,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:07:09,637 INFO L194 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 [2018-11-07 12:07:09,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:07:09,648 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 12:07:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:07:09,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 12:07:10,103 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:07:10,498 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:07:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 82 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:07:10,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 12:07:11,285 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 12:07:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:07:11,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 12:07:11,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-11-07 12:07:11,872 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 12:07:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 12:07:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 12:07:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-11-07 12:07:11,874 INFO L87 Difference]: Start difference. First operand 808 states and 1209 transitions. Second operand 15 states. [2018-11-07 12:07:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:07:19,968 INFO L93 Difference]: Finished difference Result 2262 states and 3569 transitions. [2018-11-07 12:07:19,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 12:07:19,971 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-11-07 12:07:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:07:19,982 INFO L225 Difference]: With dead ends: 2262 [2018-11-07 12:07:19,982 INFO L226 Difference]: Without dead ends: 1444 [2018-11-07 12:07:19,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 12:07:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2018-11-07 12:07:20,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1208. [2018-11-07 12:07:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-11-07 12:07:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1607 transitions. [2018-11-07 12:07:20,034 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1607 transitions. Word has length 213 [2018-11-07 12:07:20,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:07:20,034 INFO L480 AbstractCegarLoop]: Abstraction has 1208 states and 1607 transitions. [2018-11-07 12:07:20,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 12:07:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1607 transitions. [2018-11-07 12:07:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 12:07:20,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:07:20,039 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 12:07:20,040 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:07:20,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:20,040 INFO L82 PathProgramCache]: Analyzing trace with hash -229492457, now seen corresponding path program 1 times [2018-11-07 12:07:20,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:07:20,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:07:20,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:07:20,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:07:20,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:07:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:07:20,850 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 12:07:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:07:21,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:07:21,047 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:07:21,047 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 12:07:21,048 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], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:07:21,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:07:21,052 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:07:21,291 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:07:21,291 INFO L272 AbstractInterpreter]: Visited 119 different actions 232 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 12:07:21,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:21,330 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:07:21,682 INFO L227 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-07 12:07:21,683 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:07:22,801 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 12:07:22,801 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:07:22,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:07:22,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 31 [2018-11-07 12:07:22,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:07:22,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 12:07:22,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 12:07:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-07 12:07:22,805 INFO L87 Difference]: Start difference. First operand 1208 states and 1607 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 12:07:25,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:07:25,414 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 12:07:25,420 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 12:07:25,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:07:25 BoogieIcfgContainer [2018-11-07 12:07:25,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 12:07:25,421 INFO L168 Benchmark]: Toolchain (without parser) took 251474.42 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 1.7 GB in the end (delta: -251.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 12:07:25,422 INFO L168 Benchmark]: CDTParser took 0.15 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 12:07:25,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.48 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 12:07:25,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 152.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-07 12:07:25,424 INFO L168 Benchmark]: Boogie Preprocessor took 115.04 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 12:07:25,425 INFO L168 Benchmark]: RCFGBuilder took 3782.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.5 MB). Peak memory consumption was 131.5 MB. Max. memory is 7.1 GB. [2018-11-07 12:07:25,426 INFO L168 Benchmark]: TraceAbstraction took 246572.95 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 391.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 12:07:25,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 846.48 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 152.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.04 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 3782.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.5 MB). Peak memory consumption was 131.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246572.95 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 391.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 79). Cancelled while BasicCegarLoop was constructing difference of abstraction (1208states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (76 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 246.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 236.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 531 SDtfs, 4943 SDslu, 686 SDs, 0 SdLazy, 5201 SolverSat, 1491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 219.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 839 GetRequests, 766 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1208occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.0s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9969664482827081 AbsIntWeakeningRatio, 0.12602739726027398 AbsIntAvgWeakeningVarsNumRemoved, 19.345205479452055 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 247 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 944 NumberOfCodeBlocks, 944 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1150 ConstructedInterpolants, 0 QuantifiedInterpolants, 2890331 SizeOfPredicates, 6 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 439/601 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown