java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label54_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:16:51,979 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:16:51,982 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:16:51,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:16:51,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:16:52,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:16:52,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:16:52,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:16:52,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:16:52,007 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:16:52,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:16:52,010 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:16:52,011 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:16:52,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:16:52,022 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:16:52,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:16:52,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:16:52,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:16:52,032 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:16:52,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:16:52,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:16:52,039 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:16:52,044 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:16:52,045 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:16:52,045 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:16:52,046 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:16:52,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:16:52,051 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:16:52,052 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:16:52,053 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:16:52,053 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:16:52,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:16:52,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:16:52,054 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:16:52,057 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:16:52,057 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:16:52,058 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:16:52,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:16:52,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:16:52,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:16:52,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:16:52,085 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:16:52,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:16:52,086 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:16:52,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:16:52,086 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:16:52,086 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:16:52,087 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:16:52,087 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:16:52,087 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:16:52,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:16:52,088 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:16:52,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:16:52,089 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:16:52,089 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:16:52,089 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:16:52,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:16:52,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:16:52,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:16:52,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:16:52,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:16:52,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:16:52,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:16:52,092 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:16:52,093 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:16:52,093 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:16:52,093 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:16:52,093 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:16:52,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:16:52,093 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:16:52,094 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:16:52,094 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:16:52,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:16:52,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:16:52,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:16:52,175 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:16:52,175 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:16:52,176 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label54_false-unreach-call.c [2018-11-07 18:16:52,236 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d41afac/63fa34565fd64588a074728fee51f723/FLAG121152a18 [2018-11-07 18:16:52,945 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:16:52,946 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label54_false-unreach-call.c [2018-11-07 18:16:52,968 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d41afac/63fa34565fd64588a074728fee51f723/FLAG121152a18 [2018-11-07 18:16:52,986 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d41afac/63fa34565fd64588a074728fee51f723 [2018-11-07 18:16:52,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:16:52,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:16:53,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:16:53,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:16:53,004 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:16:53,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:16:52" (1/1) ... [2018-11-07 18:16:53,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:53, skipping insertion in model container [2018-11-07 18:16:53,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:16:52" (1/1) ... [2018-11-07 18:16:53,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:16:53,127 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:16:54,091 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:16:54,096 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:16:54,379 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:16:54,402 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:16:54,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54 WrapperNode [2018-11-07 18:16:54,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:16:54,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:16:54,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:16:54,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:16:54,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:16:54,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:16:54,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:16:54,614 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:16:54,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (1/1) ... [2018-11-07 18:16:54,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:16:54,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:16:54,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:16:54,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:16:54,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (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 18:16:54,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:16:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:16:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:16:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:16:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:16:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:16:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:16:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:16:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:16:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:16:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:17:00,889 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:17:00,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:17:00 BoogieIcfgContainer [2018-11-07 18:17:00,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:17:00,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:17:00,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:17:00,896 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:17:00,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:16:52" (1/3) ... [2018-11-07 18:17:00,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b302e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:17:00, skipping insertion in model container [2018-11-07 18:17:00,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:54" (2/3) ... [2018-11-07 18:17:00,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b302e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:17:00, skipping insertion in model container [2018-11-07 18:17:00,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:17:00" (3/3) ... [2018-11-07 18:17:00,900 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label54_false-unreach-call.c [2018-11-07 18:17:00,908 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:17:00,917 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:17:00,936 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:17:00,978 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:17:00,979 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:17:00,979 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:17:00,979 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:17:00,979 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:17:00,979 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:17:00,980 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:17:00,980 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:17:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:17:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 18:17:01,021 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:01,022 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:17:01,025 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:01,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1160914644, now seen corresponding path program 1 times [2018-11-07 18:17:01,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:01,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:01,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:01,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:01,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:01,525 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:17:01,590 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 18:17:01,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:17:01,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:17:01,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:01,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:17:01,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:17:01,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:17:01,613 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:17:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:05,489 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:17:05,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:17:05,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 18:17:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:05,517 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:17:05,517 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:17:05,527 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:17:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:17:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:17:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:17:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 18:17:05,640 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 32 [2018-11-07 18:17:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:05,641 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 18:17:05,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:17:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 18:17:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 18:17:05,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:05,649 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:17:05,649 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:05,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1315464537, now seen corresponding path program 1 times [2018-11-07 18:17:05,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:05,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:05,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:05,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:05,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:17:06,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:17:06,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:17:06,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:06,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:17:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:17:06,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:17:06,088 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 18:17:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:13,771 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 18:17:13,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:17:13,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 18:17:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:13,794 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 18:17:13,795 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 18:17:13,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:17:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 18:17:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 18:17:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 18:17:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 18:17:13,891 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 125 [2018-11-07 18:17:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:13,891 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 18:17:13,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:17:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 18:17:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 18:17:13,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:13,899 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 18:17:13,900 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:13,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash 928114384, now seen corresponding path program 1 times [2018-11-07 18:17:13,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:13,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:13,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:13,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:13,902 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 50 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:17:14,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:17:14,431 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:17:14,433 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 18:17:14,442 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [335], [337], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:17:14,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:17:14,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:17:15,349 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:17:15,351 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:17:15,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:15,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:17:16,402 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-07 18:17:16,402 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:17:17,423 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 18:17:17,424 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:17:17,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:17:17,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 18:17:17,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:17,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:17:17,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:17:17,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:17:17,427 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 18:17:21,830 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:17:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:46,780 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-07 18:17:46,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:17:46,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 236 [2018-11-07 18:17:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:46,792 INFO L225 Difference]: With dead ends: 3187 [2018-11-07 18:17:46,792 INFO L226 Difference]: Without dead ends: 1768 [2018-11-07 18:17:46,797 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 207 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:17:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-07 18:17:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-07 18:17:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 18:17:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 18:17:46,844 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 236 [2018-11-07 18:17:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:46,845 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 18:17:46,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:17:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 18:17:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-07 18:17:46,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:46,852 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:17:46,853 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:46,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1607710254, now seen corresponding path program 1 times [2018-11-07 18:17:46,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:46,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:46,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:46,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:46,855 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:47,191 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:17:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 81 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:17:47,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:17:47,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:17:47,745 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-11-07 18:17:47,745 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [335], [337], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:17:47,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:17:47,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:17:47,832 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:17:48,105 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:17:48,105 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:17:48,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:48,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:17:48,844 INFO L227 lantSequenceWeakener]: Weakened 84 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 18:17:48,844 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:17:50,902 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-11-07 18:17:50,902 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:17:50,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:17:50,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 18:17:50,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:50,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:17:50,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:17:50,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:17:50,905 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 18 states. [2018-11-07 18:18:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:33,006 INFO L93 Difference]: Finished difference Result 4356 states and 6646 transitions. [2018-11-07 18:18:33,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 18:18:33,006 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 328 [2018-11-07 18:18:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:33,022 INFO L225 Difference]: With dead ends: 4356 [2018-11-07 18:18:33,022 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 18:18:33,027 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 337 GetRequests, 296 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 18:18:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 18:18:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2707. [2018-11-07 18:18:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2707 states. [2018-11-07 18:18:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3594 transitions. [2018-11-07 18:18:33,101 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3594 transitions. Word has length 328 [2018-11-07 18:18:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:33,102 INFO L480 AbstractCegarLoop]: Abstraction has 2707 states and 3594 transitions. [2018-11-07 18:18:33,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:18:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3594 transitions. [2018-11-07 18:18:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-11-07 18:18:33,110 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:33,110 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 18:18:33,111 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:33,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:33,111 INFO L82 PathProgramCache]: Analyzing trace with hash 601477834, now seen corresponding path program 1 times [2018-11-07 18:18:33,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:33,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:33,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:33,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:33,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:33,432 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:18:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 81 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:18:33,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:18:33,896 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:18:33,896 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-11-07 18:18:33,896 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [335], [337], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:18:33,901 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:18:33,901 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:18:34,034 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:18:35,004 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:18:35,004 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:18:35,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:35,043 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:18:35,549 INFO L227 lantSequenceWeakener]: Weakened 84 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 18:18:35,550 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:18:35,880 INFO L415 sIntCurrentIteration]: We unified 363 AI predicates to 363 [2018-11-07 18:18:35,880 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:18:35,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:18:35,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 18:18:35,881 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:35,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:18:35,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:18:35,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:18:35,882 INFO L87 Difference]: Start difference. First operand 2707 states and 3594 transitions. Second operand 17 states. [2018-11-07 18:19:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:18,158 INFO L93 Difference]: Finished difference Result 5358 states and 7703 transitions. [2018-11-07 18:19:18,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 18:19:18,159 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 364 [2018-11-07 18:19:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:18,174 INFO L225 Difference]: With dead ends: 5358 [2018-11-07 18:19:18,175 INFO L226 Difference]: Without dead ends: 3595 [2018-11-07 18:19:18,181 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 372 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:19:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2018-11-07 18:19:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3363. [2018-11-07 18:19:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2018-11-07 18:19:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4280 transitions. [2018-11-07 18:19:18,282 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4280 transitions. Word has length 364 [2018-11-07 18:19:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:18,283 INFO L480 AbstractCegarLoop]: Abstraction has 3363 states and 4280 transitions. [2018-11-07 18:19:18,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:19:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4280 transitions. [2018-11-07 18:19:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-11-07 18:19:18,297 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:18,298 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:18,298 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:18,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2051588886, now seen corresponding path program 1 times [2018-11-07 18:19:18,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:18,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:18,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:18,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:18,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:18,701 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:19:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 81 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:19:19,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:19,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:19,141 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-11-07 18:19:19,141 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [335], [337], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:19:19,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:19,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:19,580 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:19:19,580 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:19:19,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:19,586 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:19:20,063 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-07 18:19:20,063 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:19:21,678 INFO L415 sIntCurrentIteration]: We unified 475 AI predicates to 475 [2018-11-07 18:19:21,678 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:19:21,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:19:21,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 18:19:21,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:21,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:19:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:19:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:19:21,681 INFO L87 Difference]: Start difference. First operand 3363 states and 4280 transitions. Second operand 18 states. [2018-11-07 18:19:24,314 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:52,323 INFO L93 Difference]: Finished difference Result 6104 states and 8325 transitions. [2018-11-07 18:19:52,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:19:52,324 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 476 [2018-11-07 18:19:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:52,340 INFO L225 Difference]: With dead ends: 6104 [2018-11-07 18:19:52,340 INFO L226 Difference]: Without dead ends: 3999 [2018-11-07 18:19:52,347 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 491 GetRequests, 399 SyntacticMatches, 60 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:19:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2018-11-07 18:19:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3994. [2018-11-07 18:19:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3994 states. [2018-11-07 18:19:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 4945 transitions. [2018-11-07 18:19:52,442 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 4945 transitions. Word has length 476 [2018-11-07 18:19:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:52,443 INFO L480 AbstractCegarLoop]: Abstraction has 3994 states and 4945 transitions. [2018-11-07 18:19:52,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:19:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 4945 transitions. [2018-11-07 18:19:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-07 18:19:52,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:52,459 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:52,459 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:52,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -393135270, now seen corresponding path program 1 times [2018-11-07 18:19:52,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:52,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:52,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:52,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:52,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:52,878 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:19:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 81 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:19:53,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:53,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:53,501 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 485 with the following transitions: [2018-11-07 18:19:53,501 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [335], [337], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:19:53,506 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:53,506 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:56,367 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:19:56,368 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:19:56,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:56,376 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:19:56,956 INFO L227 lantSequenceWeakener]: Weakened 131 states. On average, predicates are now at 78.11% of their original sizes. [2018-11-07 18:19:56,956 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:19:57,328 INFO L415 sIntCurrentIteration]: We unified 483 AI predicates to 483 [2018-11-07 18:19:57,328 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:19:57,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:19:57,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:19:57,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:57,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:19:57,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:19:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:19:57,330 INFO L87 Difference]: Start difference. First operand 3994 states and 4945 transitions. Second operand 23 states. [2018-11-07 18:19:59,510 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:20:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:20:16,400 INFO L93 Difference]: Finished difference Result 6740 states and 9001 transitions. [2018-11-07 18:20:16,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:20:16,401 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 484 [2018-11-07 18:20:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:20:16,418 INFO L225 Difference]: With dead ends: 6740 [2018-11-07 18:20:16,419 INFO L226 Difference]: Without dead ends: 4635 [2018-11-07 18:20:16,425 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 496 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 18:20:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2018-11-07 18:20:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2018-11-07 18:20:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2018-11-07 18:20:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 5616 transitions. [2018-11-07 18:20:16,545 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 5616 transitions. Word has length 484 [2018-11-07 18:20:16,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:20:16,546 INFO L480 AbstractCegarLoop]: Abstraction has 4627 states and 5616 transitions. [2018-11-07 18:20:16,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:20:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 5616 transitions. [2018-11-07 18:20:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-11-07 18:20:16,565 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:20:16,566 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:16,566 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:20:16,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:16,567 INFO L82 PathProgramCache]: Analyzing trace with hash -746085396, now seen corresponding path program 1 times [2018-11-07 18:20:16,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:20:16,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:16,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:16,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:16,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:20:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:17,324 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-11-07 18:20:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 200 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 18:20:18,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:20:18,181 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:20:18,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 569 with the following transitions: [2018-11-07 18:20:18,181 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [335], [337], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:20:18,186 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:20:18,186 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:20:18,268 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:20:19,544 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:20:19,545 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:20:19,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:19,550 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:20:19,959 INFO L227 lantSequenceWeakener]: Weakened 565 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 18:20:19,959 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:20:20,058 INFO L415 sIntCurrentIteration]: We unified 567 AI predicates to 567 [2018-11-07 18:20:20,058 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:20:20,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:20:20,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 18:20:20,059 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:20:20,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:20:20,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:20:20,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:20:20,060 INFO L87 Difference]: Start difference. First operand 4627 states and 5616 transitions. Second operand 10 states. [2018-11-07 18:20:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:20:30,361 INFO L93 Difference]: Finished difference Result 7780 states and 10172 transitions. [2018-11-07 18:20:30,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 18:20:30,362 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 568 [2018-11-07 18:20:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:20:30,380 INFO L225 Difference]: With dead ends: 7780 [2018-11-07 18:20:30,380 INFO L226 Difference]: Without dead ends: 5335 [2018-11-07 18:20:30,388 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 575 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:20:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2018-11-07 18:20:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 5321. [2018-11-07 18:20:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5321 states. [2018-11-07 18:20:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 6358 transitions. [2018-11-07 18:20:30,501 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 6358 transitions. Word has length 568 [2018-11-07 18:20:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:20:30,502 INFO L480 AbstractCegarLoop]: Abstraction has 5321 states and 6358 transitions. [2018-11-07 18:20:30,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:20:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 6358 transitions. [2018-11-07 18:20:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-11-07 18:20:30,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:20:30,515 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-11-07 18:20:30,516 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:20:30,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:30,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1904943887, now seen corresponding path program 1 times [2018-11-07 18:20:30,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:20:30,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:30,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:30,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:30,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:20:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:30,975 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-11-07 18:20:31,337 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:20:31,342 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:20:31,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:20:31 BoogieIcfgContainer [2018-11-07 18:20:31,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:20:31,344 INFO L168 Benchmark]: Toolchain (without parser) took 218345.40 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 1.0 GB in the end (delta: 414.9 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-11-07 18:20:31,345 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:20:31,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1403.86 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:20:31,346 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:20:31,347 INFO L168 Benchmark]: Boogie Preprocessor took 157.98 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 18:20:31,347 INFO L168 Benchmark]: RCFGBuilder took 6119.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 264.3 MB). Peak memory consumption was 264.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:20:31,348 INFO L168 Benchmark]: TraceAbstraction took 210450.56 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 1.0 GB in the end (delta: 946.7 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:20:31,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1403.86 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.98 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 6119.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 264.3 MB). Peak memory consumption was 264.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210450.56 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 1.0 GB in the end (delta: 946.7 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was analyzing trace of length 586 with TraceHistMax 5,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 584 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 210.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 185.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2647 SDtfs, 19775 SDslu, 1817 SDs, 0 SdLazy, 30042 SolverSat, 4075 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.9s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2525 GetRequests, 2275 SyntacticMatches, 98 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5321occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.1s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9976081079523853 AbsIntWeakeningRatio, 0.0783673469387755 AbsIntAvgWeakeningVarsNumRemoved, 13.588571428571429 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 515 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2613 NumberOfCodeBlocks, 2613 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2605 ConstructedInterpolants, 0 QuantifiedInterpolants, 6143021 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1173/2309 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown