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_label34_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:02:32,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:02:32,037 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:02:32,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:02:32,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:02:32,055 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:02:32,058 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:02:32,061 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:02:32,065 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:02:32,066 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:02:32,069 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:02:32,069 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:02:32,070 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:02:32,071 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:02:32,072 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:02:32,073 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:02:32,074 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:02:32,076 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:02:32,078 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:02:32,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:02:32,081 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:02:32,082 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:02:32,088 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:02:32,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:02:32,089 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:02:32,090 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:02:32,091 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:02:32,092 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:02:32,092 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:02:32,097 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:02:32,097 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:02:32,099 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 12:02:32,102 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 12:02:32,134 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:02:32,134 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:02:32,136 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:02:32,136 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:02:32,139 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:02:32,140 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:02:32,140 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:02:32,140 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:02:32,140 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:02:32,140 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:02:32,141 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:02:32,141 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:02:32,142 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:02:32,142 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:02:32,142 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:02:32,142 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:02:32,142 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:02:32,143 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:02:32,143 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:02:32,144 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:02:32,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:02:32,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:02:32,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:02:32,144 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:02:32,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:02:32,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:02:32,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:02:32,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:02:32,145 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:02:32,146 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:02:32,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:02:32,147 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:02:32,147 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:02:32,147 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:02:32,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:02:32,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:02:32,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:02:32,218 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:02:32,218 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:02:32,219 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-11-07 12:02:32,291 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2dcc53a/173676e26469440db90981806f5ddb46/FLAGe7f98ce53 [2018-11-07 12:02:32,851 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:02:32,852 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-11-07 12:02:32,870 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2dcc53a/173676e26469440db90981806f5ddb46/FLAGe7f98ce53 [2018-11-07 12:02:32,894 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2dcc53a/173676e26469440db90981806f5ddb46 [2018-11-07 12:02:32,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:02:32,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:02:32,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:02:32,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:02:32,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:02:32,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:02:32" (1/1) ... [2018-11-07 12:02:32,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:32, skipping insertion in model container [2018-11-07 12:02:32,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:02:32" (1/1) ... [2018-11-07 12:02:32,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:02:33,020 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:02:33,612 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:02:33,617 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:02:33,764 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:02:33,783 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:02:33,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33 WrapperNode [2018-11-07 12:02:33,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:02:33,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:02:33,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:02:33,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:02:33,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:33,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:33,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:02:33,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:02:33,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:02:33,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:02:33,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:33,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:33,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:33,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:33,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:34,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:34,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (1/1) ... [2018-11-07 12:02:34,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:02:34,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:02:34,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:02:34,042 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:02:34,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (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 12:02:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:02:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:02:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:02:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:02:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:02:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:02:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:02:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:02:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:02:37,947 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:02:37,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:02:37 BoogieIcfgContainer [2018-11-07 12:02:37,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:02:37,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:02:37,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:02:37,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:02:37,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:02:32" (1/3) ... [2018-11-07 12:02:37,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f47c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:02:37, skipping insertion in model container [2018-11-07 12:02:37,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:33" (2/3) ... [2018-11-07 12:02:37,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f47c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:02:37, skipping insertion in model container [2018-11-07 12:02:37,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:02:37" (3/3) ... [2018-11-07 12:02:37,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label34_false-unreach-call_false-termination.c [2018-11-07 12:02:37,967 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:02:37,978 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:02:37,997 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:02:38,039 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:02:38,040 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:02:38,040 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:02:38,040 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:02:38,041 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:02:38,041 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:02:38,041 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:02:38,041 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:02:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 12:02:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-07 12:02:38,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:02:38,086 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] [2018-11-07 12:02:38,088 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:02:38,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:38,097 INFO L82 PathProgramCache]: Analyzing trace with hash 457799444, now seen corresponding path program 1 times [2018-11-07 12:02:38,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:02:38,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:38,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:02:38,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:38,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:02:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:02:38,588 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 12:02:38,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:02:38,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:02:38,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:02:38,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:02:38,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:02:38,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:02:38,629 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 12:02:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:02:41,368 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 12:02:41,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:02:41,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-07 12:02:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:02:41,396 INFO L225 Difference]: With dead ends: 894 [2018-11-07 12:02:41,396 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 12:02:41,406 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 12:02:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 12:02:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 12:02:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 12:02:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 12:02:41,510 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 34 [2018-11-07 12:02:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:02:41,511 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 12:02:41,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:02:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 12:02:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 12:02:41,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:02:41,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:41,522 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:02:41,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:41,523 INFO L82 PathProgramCache]: Analyzing trace with hash 610303147, now seen corresponding path program 1 times [2018-11-07 12:02:41,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:02:41,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:41,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:02:41,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:41,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:02:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:02:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:02:41,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:02:41,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:02:41,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:02:41,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:02:41,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:02:41,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:02:41,901 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 12:02:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:02:45,090 INFO L93 Difference]: Finished difference Result 2170 states and 3670 transitions. [2018-11-07 12:02:45,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:02:45,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-11-07 12:02:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:02:45,103 INFO L225 Difference]: With dead ends: 2170 [2018-11-07 12:02:45,103 INFO L226 Difference]: Without dead ends: 1543 [2018-11-07 12:02:45,110 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 12:02:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-11-07 12:02:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-11-07 12:02:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-11-07 12:02:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2368 transitions. [2018-11-07 12:02:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2368 transitions. Word has length 147 [2018-11-07 12:02:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:02:45,185 INFO L480 AbstractCegarLoop]: Abstraction has 1543 states and 2368 transitions. [2018-11-07 12:02:45,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:02:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2368 transitions. [2018-11-07 12:02:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-07 12:02:45,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:02:45,198 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:45,198 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:02:45,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:45,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1882907655, now seen corresponding path program 1 times [2018-11-07 12:02:45,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:02:45,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:45,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:02:45,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:45,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:02:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:02:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:02:45,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:02:45,956 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:02:45,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-07 12:02:45,962 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], [173], [175], [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], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:02:46,046 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:02:46,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:02:46,861 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:02:46,863 INFO L272 AbstractInterpreter]: Visited 148 different actions 148 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:02:46,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:46,907 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:02:47,583 INFO L227 lantSequenceWeakener]: Weakened 252 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 12:02:47,584 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:02:47,960 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-11-07 12:02:47,960 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:02:47,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:02:47,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 12:02:47,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:02:47,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:02:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:02:47,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:02:47,963 INFO L87 Difference]: Start difference. First operand 1543 states and 2368 transitions. Second operand 7 states. [2018-11-07 12:02:50,158 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:06:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:06:16,796 INFO L93 Difference]: Finished difference Result 3265 states and 4970 transitions. [2018-11-07 12:06:16,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:06:16,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2018-11-07 12:06:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:06:16,807 INFO L225 Difference]: With dead ends: 3265 [2018-11-07 12:06:16,807 INFO L226 Difference]: Without dead ends: 1728 [2018-11-07 12:06:16,813 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 261 GetRequests, 255 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 12:06:16,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-11-07 12:06:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-11-07 12:06:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-11-07 12:06:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2558 transitions. [2018-11-07 12:06:16,863 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2558 transitions. Word has length 261 [2018-11-07 12:06:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:06:16,864 INFO L480 AbstractCegarLoop]: Abstraction has 1726 states and 2558 transitions. [2018-11-07 12:06:16,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:06:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2558 transitions. [2018-11-07 12:06:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-11-07 12:06:16,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:06:16,873 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 12:06:16,874 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:06:16,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1291032168, now seen corresponding path program 1 times [2018-11-07 12:06:16,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:06:16,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:16,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:06:16,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:16,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:06:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:06:17,444 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 12:06:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 168 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:06:17,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:06:17,903 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:06:17,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-11-07 12:06:17,904 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], [173], [175], [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], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:06:17,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:06:17,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:06:18,302 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:06:18,302 INFO L272 AbstractInterpreter]: Visited 152 different actions 297 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 12:06:18,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:18,341 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:06:19,055 INFO L227 lantSequenceWeakener]: Weakened 127 states. On average, predicates are now at 78.15% of their original sizes. [2018-11-07 12:06:19,055 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:06:20,889 INFO L415 sIntCurrentIteration]: We unified 345 AI predicates to 345 [2018-11-07 12:06:20,890 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:06:20,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:06:20,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-11-07 12:06:20,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:06:20,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 12:06:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 12:06:20,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-11-07 12:06:20,893 INFO L87 Difference]: Start difference. First operand 1726 states and 2558 transitions. Second operand 24 states. [2018-11-07 12:06:33,471 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 12:06:39,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 12:06:39,265 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 12:06:39,271 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 12:06:39,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:06:39 BoogieIcfgContainer [2018-11-07 12:06:39,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 12:06:39,273 INFO L168 Benchmark]: Toolchain (without parser) took 246361.25 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 394.2 MB. Max. memory is 7.1 GB. [2018-11-07 12:06:39,274 INFO L168 Benchmark]: CDTParser took 0.19 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 12:06:39,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 870.57 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 12:06:39,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-07 12:06:39,277 INFO L168 Benchmark]: Boogie Preprocessor took 113.54 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 12:06:39,277 INFO L168 Benchmark]: RCFGBuilder took 3906.23 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: 146.0 MB). Peak memory consumption was 146.0 MB. Max. memory is 7.1 GB. [2018-11-07 12:06:39,278 INFO L168 Benchmark]: TraceAbstraction took 241322.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 292.4 MB. Max. memory is 7.1 GB. [2018-11-07 12:06:39,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 870.57 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 142.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.54 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 3906.23 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: 146.0 MB). Peak memory consumption was 146.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241322.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 292.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (1726states) and FLOYD_HOARE automaton (currently 19 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (664 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 241.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 233.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 590 SDtfs, 2531 SDslu, 615 SDs, 0 SdLazy, 5163 SolverSat, 815 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 206.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 629 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1726occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9974143260021809 AbsIntWeakeningRatio, 0.09586776859504133 AbsIntAvgWeakeningVarsNumRemoved, 12.676033057851239 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 788 NumberOfCodeBlocks, 788 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 784 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 336/499 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown