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/Problem11_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:32:45,018 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:32:45,020 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:32:45,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:32:45,033 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:32:45,034 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:32:45,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:32:45,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:32:45,039 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:32:45,040 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:32:45,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:32:45,041 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:32:45,042 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:32:45,043 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:32:45,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:32:45,045 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:32:45,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:32:45,048 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:32:45,050 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:32:45,051 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:32:45,052 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:32:45,054 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:32:45,056 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:32:45,056 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:32:45,057 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:32:45,058 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:32:45,059 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:32:45,060 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:32:45,060 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:32:45,061 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:32:45,062 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:32:45,063 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:32:45,063 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:32:45,063 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:32:45,064 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:32:45,065 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:32:45,065 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 08:32:45,081 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:32:45,082 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:32:45,082 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:32:45,083 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:32:45,083 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:32:45,083 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:32:45,083 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:32:45,084 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:32:45,084 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:32:45,084 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:32:45,084 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:32:45,084 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:32:45,084 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:32:45,085 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:32:45,085 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:32:45,086 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:32:45,086 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:32:45,086 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:32:45,086 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:32:45,087 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:32:45,087 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:32:45,087 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:32:45,087 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:32:45,087 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:32:45,088 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:32:45,088 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:32:45,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:32:45,088 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:32:45,088 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:32:45,089 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:32:45,089 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:32:45,089 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:32:45,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:32:45,089 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:32:45,090 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:32:45,090 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:32:45,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:32:45,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:32:45,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:32:45,172 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:32:45,172 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:32:45,174 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-11-07 08:32:45,246 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29299a3d/490100ee9eb84d3c86bf193ec9b42455/FLAGe5e345d2e [2018-11-07 08:32:45,840 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:32:45,842 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-11-07 08:32:45,860 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29299a3d/490100ee9eb84d3c86bf193ec9b42455/FLAGe5e345d2e [2018-11-07 08:32:45,884 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29299a3d/490100ee9eb84d3c86bf193ec9b42455 [2018-11-07 08:32:45,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:32:45,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:32:45,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:32:45,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:32:45,911 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:32:45,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:32:45" (1/1) ... [2018-11-07 08:32:45,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c594769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:45, skipping insertion in model container [2018-11-07 08:32:45,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:32:45" (1/1) ... [2018-11-07 08:32:45,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:32:46,020 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:32:46,780 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:32:46,785 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:32:46,995 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:32:47,014 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:32:47,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47 WrapperNode [2018-11-07 08:32:47,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:32:47,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:32:47,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:32:47,016 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:32:47,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:32:47,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:32:47,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:32:47,193 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:32:47,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (1/1) ... [2018-11-07 08:32:47,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:32:47,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:32:47,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:32:47,306 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:32:47,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (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 08:32:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:32:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:32:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:32:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:32:47,385 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:32:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:32:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:32:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:32:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:32:51,917 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:32:51,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:32:51 BoogieIcfgContainer [2018-11-07 08:32:51,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:32:51,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:32:51,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:32:51,923 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:32:51,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:32:45" (1/3) ... [2018-11-07 08:32:51,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b82d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:32:51, skipping insertion in model container [2018-11-07 08:32:51,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:47" (2/3) ... [2018-11-07 08:32:51,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b82d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:32:51, skipping insertion in model container [2018-11-07 08:32:51,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:32:51" (3/3) ... [2018-11-07 08:32:51,927 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label41_true-unreach-call.c [2018-11-07 08:32:51,938 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:32:51,948 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:32:51,966 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:32:52,010 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:32:52,010 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:32:52,010 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:32:52,011 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:32:52,011 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:32:52,011 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:32:52,011 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:32:52,011 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:32:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:32:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 08:32:52,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:52,054 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] [2018-11-07 08:32:52,056 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:52,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash -146636772, now seen corresponding path program 1 times [2018-11-07 08:32:52,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:52,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:52,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:52,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:52,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:52,537 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:32:52,581 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 08:32:52,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:32:52,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:32:52,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:52,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:32:52,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:32:52,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:32:52,604 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 08:32:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:32:54,857 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 08:32:54,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:32:54,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-07 08:32:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:32:54,882 INFO L225 Difference]: With dead ends: 782 [2018-11-07 08:32:54,882 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 08:32:54,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:32:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 08:32:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 08:32:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 08:32:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-07 08:32:54,982 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 28 [2018-11-07 08:32:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:32:54,983 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-07 08:32:54,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:32:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-07 08:32:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 08:32:54,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:32:54,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:32:54,990 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:32:54,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:32:54,991 INFO L82 PathProgramCache]: Analyzing trace with hash -425752825, now seen corresponding path program 1 times [2018-11-07 08:32:54,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:32:54,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:54,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:32:54,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:32:54,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:32:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:32:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:32:55,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:32:55,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 08:32:55,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:32:55,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 08:32:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 08:32:55,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:32:55,558 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-07 08:33:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:01,240 INFO L93 Difference]: Finished difference Result 1759 states and 3238 transitions. [2018-11-07 08:33:01,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 08:33:01,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2018-11-07 08:33:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:01,259 INFO L225 Difference]: With dead ends: 1759 [2018-11-07 08:33:01,259 INFO L226 Difference]: Without dead ends: 1283 [2018-11-07 08:33:01,265 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:33:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-07 08:33:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1037. [2018-11-07 08:33:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-07 08:33:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-07 08:33:01,347 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 103 [2018-11-07 08:33:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:01,348 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-07 08:33:01,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 08:33:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-07 08:33:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 08:33:01,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:01,354 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:33:01,354 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:01,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:01,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1279135784, now seen corresponding path program 1 times [2018-11-07 08:33:01,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:01,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:01,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:01,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:01,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:01,665 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:33:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:33:01,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:33:01,728 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:33:01,730 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-07 08:33:01,732 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:33:01,777 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:33:01,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:33:02,472 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:33:02,478 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:33:02,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:02,520 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:33:03,306 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.18% of their original sizes. [2018-11-07 08:33:03,306 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:33:03,558 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-07 08:33:03,558 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:33:03,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:33:03,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:33:03,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:03,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:33:03,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:33:03,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:33:03,565 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-11-07 08:33:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:49,765 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-11-07 08:33:49,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:33:49,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 08:33:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:49,772 INFO L225 Difference]: With dead ends: 2260 [2018-11-07 08:33:49,772 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 08:33:49,776 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:33:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 08:33:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-11-07 08:33:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-11-07 08:33:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-11-07 08:33:49,811 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 176 [2018-11-07 08:33:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:49,812 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-11-07 08:33:49,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:33:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-11-07 08:33:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 08:33:49,816 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:49,817 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:33:49,817 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:49,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:49,818 INFO L82 PathProgramCache]: Analyzing trace with hash 239746622, now seen corresponding path program 1 times [2018-11-07 08:33:49,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:49,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:49,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:49,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:49,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:33:50,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:33:50,139 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:33:50,140 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 08:33:50,140 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:33:50,147 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:33:50,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:33:50,840 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:33:50,840 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:33:50,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:50,880 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:33:50,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:33:50,880 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 08:33:50,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:50,896 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:33:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:51,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:02,644 WARN L179 SmtUtils]: Spent 8.85 s on a formula simplification. DAG size of input: 118 DAG size of output: 16 [2018-11-07 08:34:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:34:02,763 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:34:03,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 08:34:03,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-11-07 08:34:03,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:03,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:34:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:34:03,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2018-11-07 08:34:03,225 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-11-07 08:34:06,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:06,100 INFO L93 Difference]: Finished difference Result 2987 states and 4933 transitions. [2018-11-07 08:34:06,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:34:06,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-11-07 08:34:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:06,122 INFO L225 Difference]: With dead ends: 2987 [2018-11-07 08:34:06,123 INFO L226 Difference]: Without dead ends: 1956 [2018-11-07 08:34:06,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 439 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2018-11-07 08:34:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2018-11-07 08:34:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1949. [2018-11-07 08:34:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2018-11-07 08:34:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3020 transitions. [2018-11-07 08:34:06,193 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3020 transitions. Word has length 220 [2018-11-07 08:34:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:06,194 INFO L480 AbstractCegarLoop]: Abstraction has 1949 states and 3020 transitions. [2018-11-07 08:34:06,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:34:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3020 transitions. [2018-11-07 08:34:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 08:34:06,200 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:06,200 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:34:06,200 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:06,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1859385058, now seen corresponding path program 1 times [2018-11-07 08:34:06,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:06,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:06,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:06,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:06,802 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:06,803 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 08:34:06,803 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:06,810 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:06,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:07,383 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:34:07,384 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:34:07,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:07,424 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:34:07,870 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 75.06% of their original sizes. [2018-11-07 08:34:07,871 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:34:08,021 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 08:34:08,022 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:34:08,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:08,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 08:34:08,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:08,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:34:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:34:08,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:34:08,024 INFO L87 Difference]: Start difference. First operand 1949 states and 3020 transitions. Second operand 10 states. [2018-11-07 08:36:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:18,124 INFO L93 Difference]: Finished difference Result 4094 states and 6590 transitions. [2018-11-07 08:36:18,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 08:36:18,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 236 [2018-11-07 08:36:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:18,137 INFO L225 Difference]: With dead ends: 4094 [2018-11-07 08:36:18,137 INFO L226 Difference]: Without dead ends: 2341 [2018-11-07 08:36:18,146 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:36:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2018-11-07 08:36:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2334. [2018-11-07 08:36:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2018-11-07 08:36:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3487 transitions. [2018-11-07 08:36:18,207 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3487 transitions. Word has length 236 [2018-11-07 08:36:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:18,208 INFO L480 AbstractCegarLoop]: Abstraction has 2334 states and 3487 transitions. [2018-11-07 08:36:18,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:36:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3487 transitions. [2018-11-07 08:36:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 08:36:18,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:18,214 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:36:18,215 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:18,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:18,215 INFO L82 PathProgramCache]: Analyzing trace with hash -867635988, now seen corresponding path program 1 times [2018-11-07 08:36:18,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:18,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:18,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:18,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:18,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-07 08:36:18,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:36:18,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:36:18,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:36:18,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:36:18,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:36:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:36:18,480 INFO L87 Difference]: Start difference. First operand 2334 states and 3487 transitions. Second operand 3 states. [2018-11-07 08:36:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:21,139 INFO L93 Difference]: Finished difference Result 5536 states and 8669 transitions. [2018-11-07 08:36:21,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:36:21,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-11-07 08:36:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:21,173 INFO L225 Difference]: With dead ends: 5536 [2018-11-07 08:36:21,174 INFO L226 Difference]: Without dead ends: 3397 [2018-11-07 08:36:21,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:36:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2018-11-07 08:36:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3345. [2018-11-07 08:36:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3345 states. [2018-11-07 08:36:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 5003 transitions. [2018-11-07 08:36:21,282 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 5003 transitions. Word has length 251 [2018-11-07 08:36:21,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:21,282 INFO L480 AbstractCegarLoop]: Abstraction has 3345 states and 5003 transitions. [2018-11-07 08:36:21,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:36:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 5003 transitions. [2018-11-07 08:36:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-11-07 08:36:21,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:21,302 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:21,302 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:21,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:21,302 INFO L82 PathProgramCache]: Analyzing trace with hash 399067847, now seen corresponding path program 1 times [2018-11-07 08:36:21,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:21,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:21,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:21,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:21,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 08:36:21,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:21,766 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:21,766 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 371 with the following transitions: [2018-11-07 08:36:21,767 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:36:21,772 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:21,772 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:22,355 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:36:22,356 INFO L272 AbstractInterpreter]: Visited 147 different actions 581 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:36:22,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:22,362 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:36:22,830 INFO L227 lantSequenceWeakener]: Weakened 367 states. On average, predicates are now at 80.17% of their original sizes. [2018-11-07 08:36:22,831 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:36:23,042 INFO L415 sIntCurrentIteration]: We unified 369 AI predicates to 369 [2018-11-07 08:36:23,043 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:36:23,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:36:23,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 08:36:23,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:36:23,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 08:36:23,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 08:36:23,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:36:23,044 INFO L87 Difference]: Start difference. First operand 3345 states and 5003 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 08:36:46,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 08:36:46,127 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:36:46,133 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:36:46,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:36:46 BoogieIcfgContainer [2018-11-07 08:36:46,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:36:46,134 INFO L168 Benchmark]: Toolchain (without parser) took 240235.83 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 08:36:46,135 INFO L168 Benchmark]: CDTParser took 0.32 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 08:36:46,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1113.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-07 08:36:46,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 176.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:36:46,138 INFO L168 Benchmark]: Boogie Preprocessor took 113.25 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 08:36:46,138 INFO L168 Benchmark]: RCFGBuilder took 4612.60 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: 186.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:36:46,139 INFO L168 Benchmark]: TraceAbstraction took 234213.53 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -421.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 08:36:46,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 1113.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 176.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.25 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 4612.60 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: 186.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234213.53 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -421.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (3345states) and FLOYD_HOARE automaton (currently 15 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (3734 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 213.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1777 SDtfs, 4316 SDslu, 1571 SDs, 0 SdLazy, 7797 SolverSat, 1624 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 184.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1269 GetRequests, 1207 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3345occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9972515986161657 AbsIntWeakeningRatio, 0.11553273427471117 AbsIntAvgWeakeningVarsNumRemoved, 17.37997432605905 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 319 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 1604 NumberOfCodeBlocks, 1604 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1815 ConstructedInterpolants, 2 QuantifiedInterpolants, 1338105 SizeOfPredicates, 3 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 945/1107 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown