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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 05:19:04,860 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 05:19:04,863 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 05:19:04,878 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 05:19:04,878 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 05:19:04,879 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 05:19:04,881 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 05:19:04,882 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 05:19:04,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 05:19:04,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 05:19:04,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 05:19:04,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 05:19:04,887 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 05:19:04,888 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 05:19:04,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 05:19:04,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 05:19:04,891 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 05:19:04,893 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 05:19:04,895 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 05:19:04,896 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 05:19:04,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 05:19:04,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 05:19:04,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 05:19:04,918 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 05:19:04,918 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 05:19:04,919 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 05:19:04,921 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 05:19:04,921 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 05:19:04,955 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 05:19:04,956 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 05:19:04,957 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 05:19:04,958 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 05:19:04,958 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 05:19:04,958 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 05:19:04,958 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 05:19:04,958 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 05:19:04,959 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 05:19:04,959 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 05:19:04,959 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 05:19:04,959 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 05:19:04,960 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 05:19:04,960 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 05:19:04,961 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 05:19:04,961 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 05:19:04,961 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 05:19:04,961 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 05:19:04,962 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 05:19:04,962 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 05:19:04,962 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 05:19:04,962 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 05:19:04,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 05:19:04,963 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 05:19:04,963 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 05:19:04,963 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 05:19:04,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 05:19:04,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 05:19:04,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 05:19:04,964 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 05:19:04,964 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 05:19:04,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 05:19:04,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 05:19:04,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 05:19:04,965 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 05:19:04,965 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 05:19:05,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 05:19:05,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 05:19:05,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 05:19:05,040 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 05:19:05,040 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 05:19:05,041 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50_false-unreach-call.c [2018-11-07 05:19:05,113 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ef7b8da/ca5bb7aa9976492ca4a07b533e81fb50/FLAG230449350 [2018-11-07 05:19:05,759 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 05:19:05,760 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50_false-unreach-call.c [2018-11-07 05:19:05,779 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ef7b8da/ca5bb7aa9976492ca4a07b533e81fb50/FLAG230449350 [2018-11-07 05:19:05,796 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ef7b8da/ca5bb7aa9976492ca4a07b533e81fb50 [2018-11-07 05:19:05,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 05:19:05,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 05:19:05,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 05:19:05,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 05:19:05,817 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 05:19:05,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:19:05" (1/1) ... [2018-11-07 05:19:05,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34389c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:05, skipping insertion in model container [2018-11-07 05:19:05,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:19:05" (1/1) ... [2018-11-07 05:19:05,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 05:19:05,938 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 05:19:06,747 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 05:19:06,753 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 05:19:07,032 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 05:19:07,056 INFO L193 MainTranslator]: Completed translation [2018-11-07 05:19:07,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07 WrapperNode [2018-11-07 05:19:07,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 05:19:07,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 05:19:07,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 05:19:07,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 05:19:07,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 05:19:07,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 05:19:07,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 05:19:07,262 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 05:19:07,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (1/1) ... [2018-11-07 05:19:07,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 05:19:07,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 05:19:07,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 05:19:07,424 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 05:19:07,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (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 05:19:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 05:19:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 05:19:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 05:19:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 05:19:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 05:19:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 05:19:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 05:19:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 05:19:07,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 05:19:12,237 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 05:19:12,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:19:12 BoogieIcfgContainer [2018-11-07 05:19:12,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 05:19:12,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 05:19:12,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 05:19:12,243 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 05:19:12,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:19:05" (1/3) ... [2018-11-07 05:19:12,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7928d92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:19:12, skipping insertion in model container [2018-11-07 05:19:12,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:19:07" (2/3) ... [2018-11-07 05:19:12,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7928d92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:19:12, skipping insertion in model container [2018-11-07 05:19:12,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:19:12" (3/3) ... [2018-11-07 05:19:12,247 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label50_false-unreach-call.c [2018-11-07 05:19:12,257 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 05:19:12,266 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 05:19:12,283 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 05:19:12,323 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 05:19:12,323 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 05:19:12,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 05:19:12,323 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 05:19:12,324 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 05:19:12,324 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 05:19:12,324 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 05:19:12,324 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 05:19:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 05:19:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 05:19:12,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:12,375 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:12,378 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:12,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:12,384 INFO L82 PathProgramCache]: Analyzing trace with hash -919823164, now seen corresponding path program 1 times [2018-11-07 05:19:12,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:12,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:12,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:12,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:12,440 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:13,342 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 05:19:13,706 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 05:19:13,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:19:13,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 05:19:13,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:19:13,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 05:19:13,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 05:19:13,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 05:19:13,734 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 05:19:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:17,577 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-11-07 05:19:17,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 05:19:17,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-11-07 05:19:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:17,606 INFO L225 Difference]: With dead ends: 1080 [2018-11-07 05:19:17,606 INFO L226 Difference]: Without dead ends: 762 [2018-11-07 05:19:17,615 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 05:19:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-11-07 05:19:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-11-07 05:19:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-07 05:19:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-11-07 05:19:17,724 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 161 [2018-11-07 05:19:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:17,726 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-11-07 05:19:17,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 05:19:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-11-07 05:19:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 05:19:17,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:17,748 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:19:17,749 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:17,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash 942984968, now seen corresponding path program 1 times [2018-11-07 05:19:17,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:17,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:17,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:17,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:17,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:19:18,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:19:18,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 05:19:18,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:19:18,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 05:19:18,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 05:19:18,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 05:19:18,125 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 7 states. [2018-11-07 05:19:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:21,463 INFO L93 Difference]: Finished difference Result 1609 states and 2945 transitions. [2018-11-07 05:19:21,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 05:19:21,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2018-11-07 05:19:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:21,482 INFO L225 Difference]: With dead ends: 1609 [2018-11-07 05:19:21,482 INFO L226 Difference]: Without dead ends: 1095 [2018-11-07 05:19:21,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 05:19:21,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-11-07 05:19:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1030. [2018-11-07 05:19:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2018-11-07 05:19:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1816 transitions. [2018-11-07 05:19:21,603 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1816 transitions. Word has length 178 [2018-11-07 05:19:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:21,603 INFO L480 AbstractCegarLoop]: Abstraction has 1030 states and 1816 transitions. [2018-11-07 05:19:21,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 05:19:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1816 transitions. [2018-11-07 05:19:21,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 05:19:21,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:21,609 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:19:21,609 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:21,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:21,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1192010291, now seen corresponding path program 1 times [2018-11-07 05:19:21,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:21,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:21,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:21,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:21,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:21,848 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 05:19:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:19:21,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:19:21,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 05:19:21,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:19:21,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 05:19:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 05:19:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 05:19:21,909 INFO L87 Difference]: Start difference. First operand 1030 states and 1816 transitions. Second operand 6 states. [2018-11-07 05:19:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:25,768 INFO L93 Difference]: Finished difference Result 3134 states and 5772 transitions. [2018-11-07 05:19:25,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 05:19:25,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-11-07 05:19:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:25,786 INFO L225 Difference]: With dead ends: 3134 [2018-11-07 05:19:25,786 INFO L226 Difference]: Without dead ends: 2110 [2018-11-07 05:19:25,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 05:19:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-11-07 05:19:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2036. [2018-11-07 05:19:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-11-07 05:19:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3605 transitions. [2018-11-07 05:19:25,882 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3605 transitions. Word has length 179 [2018-11-07 05:19:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:25,882 INFO L480 AbstractCegarLoop]: Abstraction has 2036 states and 3605 transitions. [2018-11-07 05:19:25,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 05:19:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3605 transitions. [2018-11-07 05:19:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 05:19:25,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:25,892 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:19:25,892 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:25,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash 602837679, now seen corresponding path program 1 times [2018-11-07 05:19:25,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:25,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:25,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:25,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:25,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 05:19:26,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:26,168 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:19:26,169 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-11-07 05:19:26,172 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:19:26,234 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:19:26,234 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:19:27,440 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:19:27,442 INFO L272 AbstractInterpreter]: Visited 162 different actions 162 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 05:19:27,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:27,490 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:19:28,433 INFO L227 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 70.87% of their original sizes. [2018-11-07 05:19:28,434 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:19:28,901 INFO L415 sIntCurrentIteration]: We unified 187 AI predicates to 187 [2018-11-07 05:19:28,901 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:19:28,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:19:28,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 05:19:28,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:19:28,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 05:19:28,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 05:19:28,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-11-07 05:19:28,904 INFO L87 Difference]: Start difference. First operand 2036 states and 3605 transitions. Second operand 17 states. [2018-11-07 05:20:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:20:00,820 INFO L93 Difference]: Finished difference Result 4276 states and 7590 transitions. [2018-11-07 05:20:00,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 05:20:00,821 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 188 [2018-11-07 05:20:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:20:00,832 INFO L225 Difference]: With dead ends: 4276 [2018-11-07 05:20:00,833 INFO L226 Difference]: Without dead ends: 2246 [2018-11-07 05:20:00,838 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 188 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-11-07 05:20:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2018-11-07 05:20:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2244. [2018-11-07 05:20:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-07 05:20:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3822 transitions. [2018-11-07 05:20:00,905 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3822 transitions. Word has length 188 [2018-11-07 05:20:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:20:00,905 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3822 transitions. [2018-11-07 05:20:00,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 05:20:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3822 transitions. [2018-11-07 05:20:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 05:20:00,913 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:20:00,913 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:20:00,914 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:20:00,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash -679713230, now seen corresponding path program 1 times [2018-11-07 05:20:00,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:20:00,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:00,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:00,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:00,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:20:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:01,176 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 05:20:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 05:20:01,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:01,368 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:20:01,368 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 05:20:01,368 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:20:01,380 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:20:01,380 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:20:02,096 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:20:02,097 INFO L272 AbstractInterpreter]: Visited 166 different actions 326 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 05:20:02,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:02,127 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:20:02,702 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 71.33% of their original sizes. [2018-11-07 05:20:02,702 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:20:03,208 INFO L415 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2018-11-07 05:20:03,209 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:20:03,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:20:03,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [9] total 29 [2018-11-07 05:20:03,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:20:03,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 05:20:03,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 05:20:03,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2018-11-07 05:20:03,211 INFO L87 Difference]: Start difference. First operand 2244 states and 3822 transitions. Second operand 22 states. [2018-11-07 05:20:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:20:41,769 INFO L93 Difference]: Finished difference Result 4488 states and 7812 transitions. [2018-11-07 05:20:41,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 05:20:41,770 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 200 [2018-11-07 05:20:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:20:41,781 INFO L225 Difference]: With dead ends: 4488 [2018-11-07 05:20:41,781 INFO L226 Difference]: Without dead ends: 2458 [2018-11-07 05:20:41,787 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2018-11-07 05:20:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2018-11-07 05:20:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2455. [2018-11-07 05:20:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2018-11-07 05:20:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4048 transitions. [2018-11-07 05:20:41,855 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4048 transitions. Word has length 200 [2018-11-07 05:20:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:20:41,856 INFO L480 AbstractCegarLoop]: Abstraction has 2455 states and 4048 transitions. [2018-11-07 05:20:41,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 05:20:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4048 transitions. [2018-11-07 05:20:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 05:20:41,863 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:20:41,864 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:20:41,864 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:20:41,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:41,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2132858967, now seen corresponding path program 1 times [2018-11-07 05:20:41,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:20:41,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:41,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:41,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:41,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:20:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:42,391 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 05:20:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:20:42,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:42,570 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:20:42,570 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 05:20:42,571 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:20:42,577 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:20:42,578 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:20:43,270 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:20:43,270 INFO L272 AbstractInterpreter]: Visited 165 different actions 323 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 05:20:43,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:43,274 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:20:43,713 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 73.24% of their original sizes. [2018-11-07 05:20:43,714 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:20:43,916 INFO L415 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2018-11-07 05:20:43,916 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:20:43,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:20:43,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 05:20:43,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:20:43,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 05:20:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 05:20:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-07 05:20:43,919 INFO L87 Difference]: Start difference. First operand 2455 states and 4048 transitions. Second operand 16 states. [2018-11-07 05:21:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:21:14,564 INFO L93 Difference]: Finished difference Result 6616 states and 11944 transitions. [2018-11-07 05:21:14,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 05:21:14,564 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 200 [2018-11-07 05:21:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:21:14,584 INFO L225 Difference]: With dead ends: 6616 [2018-11-07 05:21:14,585 INFO L226 Difference]: Without dead ends: 4586 [2018-11-07 05:21:14,594 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2018-11-07 05:21:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2018-11-07 05:21:14,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4576. [2018-11-07 05:21:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-11-07 05:21:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 7369 transitions. [2018-11-07 05:21:14,721 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 7369 transitions. Word has length 200 [2018-11-07 05:21:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:21:14,722 INFO L480 AbstractCegarLoop]: Abstraction has 4576 states and 7369 transitions. [2018-11-07 05:21:14,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 05:21:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 7369 transitions. [2018-11-07 05:21:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 05:21:14,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:21:14,735 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:21:14,735 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:21:14,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:14,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1563302331, now seen corresponding path program 1 times [2018-11-07 05:21:14,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:21:14,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:14,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:14,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:14,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:21:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:15,042 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 05:21:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-07 05:21:15,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:15,207 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:21:15,207 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-07 05:21:15,207 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:21:15,213 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:21:15,214 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:21:16,049 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:21:16,050 INFO L272 AbstractInterpreter]: Visited 168 different actions 498 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 05:21:16,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:16,058 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:21:16,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:16,058 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 05:21:16,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:16,070 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:21:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:16,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:21:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-07 05:21:16,763 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:21:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-07 05:21:18,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:21:18,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 05:21:18,024 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:21:18,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 05:21:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 05:21:18,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 05:21:18,025 INFO L87 Difference]: Start difference. First operand 4576 states and 7369 transitions. Second operand 9 states. [2018-11-07 05:21:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:21:22,952 INFO L93 Difference]: Finished difference Result 18551 states and 36335 transitions. [2018-11-07 05:21:22,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 05:21:22,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2018-11-07 05:21:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:21:23,080 INFO L225 Difference]: With dead ends: 18551 [2018-11-07 05:21:23,080 INFO L226 Difference]: Without dead ends: 14821 [2018-11-07 05:21:23,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 437 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-11-07 05:21:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14821 states. [2018-11-07 05:21:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14821 to 14410. [2018-11-07 05:21:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14410 states. [2018-11-07 05:21:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 23314 transitions. [2018-11-07 05:21:23,851 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 23314 transitions. Word has length 214 [2018-11-07 05:21:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:21:23,852 INFO L480 AbstractCegarLoop]: Abstraction has 14410 states and 23314 transitions. [2018-11-07 05:21:23,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 05:21:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 23314 transitions. [2018-11-07 05:21:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 05:21:23,887 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:21:23,888 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:21:23,888 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:21:23,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:23,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1823721979, now seen corresponding path program 1 times [2018-11-07 05:21:23,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:21:23,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:23,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:23,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:23,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:21:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:24,217 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 05:21:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 05:21:25,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:25,044 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:21:25,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-11-07 05:21:25,045 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:21:25,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:21:25,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:21:26,834 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:21:26,835 INFO L272 AbstractInterpreter]: Visited 167 different actions 497 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 05:21:26,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:26,876 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:21:26,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:26,876 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:21:26,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:26,890 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:21:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:27,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:21:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 05:21:27,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:21:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 05:21:28,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:21:28,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 05:21:28,529 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:21:28,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 05:21:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 05:21:28,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 05:21:28,530 INFO L87 Difference]: Start difference. First operand 14410 states and 23314 transitions. Second operand 12 states. [2018-11-07 05:21:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:21:34,755 INFO L93 Difference]: Finished difference Result 43691 states and 71729 transitions. [2018-11-07 05:21:34,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 05:21:34,756 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 213 [2018-11-07 05:21:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:21:34,886 INFO L225 Difference]: With dead ends: 43691 [2018-11-07 05:21:34,886 INFO L226 Difference]: Without dead ends: 29287 [2018-11-07 05:21:34,973 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 448 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 05:21:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29287 states. [2018-11-07 05:21:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29287 to 29239. [2018-11-07 05:21:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29239 states. [2018-11-07 05:21:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29239 states to 29239 states and 43852 transitions. [2018-11-07 05:21:36,081 INFO L78 Accepts]: Start accepts. Automaton has 29239 states and 43852 transitions. Word has length 213 [2018-11-07 05:21:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:21:36,081 INFO L480 AbstractCegarLoop]: Abstraction has 29239 states and 43852 transitions. [2018-11-07 05:21:36,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 05:21:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 29239 states and 43852 transitions. [2018-11-07 05:21:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-07 05:21:36,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:21:36,175 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 05:21:36,176 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:21:36,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash -567620804, now seen corresponding path program 1 times [2018-11-07 05:21:36,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:21:36,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:36,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:36,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:36,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:21:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 161 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 05:21:36,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:36,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:21:36,788 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 305 with the following transitions: [2018-11-07 05:21:36,788 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:21:36,793 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:21:36,794 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:21:37,539 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:21:37,539 INFO L272 AbstractInterpreter]: Visited 166 different actions 326 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 05:21:37,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:37,577 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:21:38,769 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 71.82% of their original sizes. [2018-11-07 05:21:38,770 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:21:39,180 INFO L415 sIntCurrentIteration]: We unified 303 AI predicates to 303 [2018-11-07 05:21:39,180 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:21:39,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:21:39,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 05:21:39,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:21:39,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 05:21:39,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 05:21:39,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 05:21:39,182 INFO L87 Difference]: Start difference. First operand 29239 states and 43852 transitions. Second operand 19 states. [2018-11-07 05:22:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:22:18,615 INFO L93 Difference]: Finished difference Result 62586 states and 94365 transitions. [2018-11-07 05:22:18,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 05:22:18,615 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 304 [2018-11-07 05:22:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:22:18,745 INFO L225 Difference]: With dead ends: 62586 [2018-11-07 05:22:18,746 INFO L226 Difference]: Without dead ends: 33774 [2018-11-07 05:22:18,806 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 311 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2018-11-07 05:22:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33774 states. [2018-11-07 05:22:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33774 to 33771. [2018-11-07 05:22:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33771 states. [2018-11-07 05:22:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33771 states to 33771 states and 49778 transitions. [2018-11-07 05:22:19,740 INFO L78 Accepts]: Start accepts. Automaton has 33771 states and 49778 transitions. Word has length 304 [2018-11-07 05:22:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:22:19,741 INFO L480 AbstractCegarLoop]: Abstraction has 33771 states and 49778 transitions. [2018-11-07 05:22:19,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 05:22:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 33771 states and 49778 transitions. [2018-11-07 05:22:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-07 05:22:19,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:22:19,831 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 05:22:19,831 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:22:19,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:22:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1232315585, now seen corresponding path program 1 times [2018-11-07 05:22:19,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:22:19,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:22:19,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:22:19,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:22:19,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:22:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:22:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 154 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 05:22:20,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:22:20,960 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:22:20,960 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 317 with the following transitions: [2018-11-07 05:22:20,960 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:22:20,965 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:22:20,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:22:22,266 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:22:22,266 INFO L272 AbstractInterpreter]: Visited 168 different actions 670 times. Merged at 8 different actions 33 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 05:22:22,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:22:22,275 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:22:22,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:22:22,275 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:22:22,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:22:22,285 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:22:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:22:22,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:22:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-11-07 05:22:22,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:22:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 163 proven. 38 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-07 05:22:23,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:22:23,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 05:22:23,157 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:22:23,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 05:22:23,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 05:22:23,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 05:22:23,158 INFO L87 Difference]: Start difference. First operand 33771 states and 49778 transitions. Second operand 12 states. [2018-11-07 05:22:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:22:33,415 INFO L93 Difference]: Finished difference Result 121012 states and 187825 transitions. [2018-11-07 05:22:33,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 05:22:33,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 316 [2018-11-07 05:22:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:22:33,826 INFO L225 Difference]: With dead ends: 121012 [2018-11-07 05:22:33,827 INFO L226 Difference]: Without dead ends: 87665 [2018-11-07 05:22:33,982 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 662 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=477, Invalid=1779, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 05:22:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87665 states. [2018-11-07 05:22:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87665 to 87495. [2018-11-07 05:22:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87495 states. [2018-11-07 05:22:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87495 states to 87495 states and 124706 transitions. [2018-11-07 05:22:36,196 INFO L78 Accepts]: Start accepts. Automaton has 87495 states and 124706 transitions. Word has length 316 [2018-11-07 05:22:36,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:22:36,196 INFO L480 AbstractCegarLoop]: Abstraction has 87495 states and 124706 transitions. [2018-11-07 05:22:36,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 05:22:36,197 INFO L276 IsEmpty]: Start isEmpty. Operand 87495 states and 124706 transitions. [2018-11-07 05:22:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-11-07 05:22:36,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:22:36,288 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-11-07 05:22:36,288 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:22:36,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:22:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 485449046, now seen corresponding path program 1 times [2018-11-07 05:22:36,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:22:36,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:22:36,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:22:36,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:22:36,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:22:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:22:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 189 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 05:22:39,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:22:39,038 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:22:39,038 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 322 with the following transitions: [2018-11-07 05:22:39,038 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [460], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [749], [751], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:22:39,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:22:39,043 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:22:39,477 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:22:39,477 INFO L272 AbstractInterpreter]: Visited 166 different actions 326 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 05:22:39,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:22:39,483 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:22:40,096 INFO L227 lantSequenceWeakener]: Weakened 318 states. On average, predicates are now at 71.34% of their original sizes. [2018-11-07 05:22:40,096 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:22:40,402 INFO L415 sIntCurrentIteration]: We unified 320 AI predicates to 320 [2018-11-07 05:22:40,402 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:22:40,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:22:40,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 05:22:40,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:22:40,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 05:22:40,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 05:22:40,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 05:22:40,405 INFO L87 Difference]: Start difference. First operand 87495 states and 124706 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 05:22:49,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 05:22:49,736 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 05:22:49,741 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 05:22:49,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:22:49 BoogieIcfgContainer [2018-11-07 05:22:49,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 05:22:49,742 INFO L168 Benchmark]: Toolchain (without parser) took 223932.84 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -865.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 05:22:49,743 INFO L168 Benchmark]: CDTParser took 0.22 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 05:22:49,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1245.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:49,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:49,745 INFO L168 Benchmark]: Boogie Preprocessor took 161.07 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 05:22:49,746 INFO L168 Benchmark]: RCFGBuilder took 4814.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.0 MB). Peak memory consumption was 257.0 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:49,746 INFO L168 Benchmark]: TraceAbstraction took 217501.76 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -340.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 05:22:49,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1245.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.07 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 4814.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.0 MB). Peak memory consumption was 257.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217501.76 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -340.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1497]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1497). Cancelled while BasicCegarLoop was constructing difference of abstraction (87495states) and FLOYD_HOARE automaton (currently 15 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (1400 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 217.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 183.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2221 SDtfs, 27281 SDslu, 6486 SDs, 0 SdLazy, 28887 SolverSat, 5678 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.6s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2944 GetRequests, 2678 SyntacticMatches, 14 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87495occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.0s AbstIntTime, 8 AbstIntIterations, 5 AbstIntStrong, 0.9988163901437563 AbsIntWeakeningRatio, 0.27566225165562913 AbsIntAvgWeakeningVarsNumRemoved, 55.354304635761586 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 1028 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 3217 NumberOfCodeBlocks, 3217 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3943 ConstructedInterpolants, 0 QuantifiedInterpolants, 1954089 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3970 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 1648/1884 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown