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/Problem18_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:24:05,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:24:05,948 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:24:05,965 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:24:05,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:24:05,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:24:05,968 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:24:05,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:24:05,974 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:24:05,983 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:24:05,984 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:24:05,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:24:05,986 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:24:05,987 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:24:05,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:24:05,992 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:24:05,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:24:05,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:24:06,000 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:24:06,003 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:24:06,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:24:06,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:24:06,012 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:24:06,012 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:24:06,012 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:24:06,013 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:24:06,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:24:06,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:24:06,015 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:24:06,018 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:24:06,018 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:24:06,020 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:24:06,021 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:24:06,021 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:24:06,022 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:24:06,022 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:24:06,023 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 18:24:06,048 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:24:06,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:24:06,049 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:24:06,050 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:24:06,050 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:24:06,050 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:24:06,051 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:24:06,051 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:24:06,051 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:24:06,051 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:24:06,051 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:24:06,052 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:24:06,052 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:24:06,054 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:24:06,054 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:24:06,054 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:24:06,054 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:24:06,054 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:24:06,055 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:24:06,056 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:24:06,056 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:24:06,056 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:24:06,056 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:24:06,057 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:24:06,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:24:06,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:24:06,057 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:24:06,057 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:24:06,058 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:24:06,058 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:24:06,058 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:24:06,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:24:06,059 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:24:06,059 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:24:06,059 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:24:06,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:24:06,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:24:06,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:24:06,146 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:24:06,146 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:24:06,147 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-11-07 18:24:06,226 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7103985e/95bcdbd7d9e745bd95964932bcf7472d/FLAGd2f7ad76e [2018-11-07 18:24:06,973 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:24:06,974 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-11-07 18:24:07,001 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7103985e/95bcdbd7d9e745bd95964932bcf7472d/FLAGd2f7ad76e [2018-11-07 18:24:07,019 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7103985e/95bcdbd7d9e745bd95964932bcf7472d [2018-11-07 18:24:07,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:24:07,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:24:07,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:24:07,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:24:07,043 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:24:07,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:24:07" (1/1) ... [2018-11-07 18:24:07,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38536ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:07, skipping insertion in model container [2018-11-07 18:24:07,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:24:07" (1/1) ... [2018-11-07 18:24:07,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:24:07,205 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:24:08,172 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:24:08,177 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:24:08,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:24:08,679 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:24:08,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08 WrapperNode [2018-11-07 18:24:08,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:24:08,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:24:08,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:24:08,682 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:24:08,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:08,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:24:09,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:24:09,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:24:09,013 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:24:09,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (1/1) ... [2018-11-07 18:24:09,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:24:09,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:24:09,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:24:09,254 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:24:09,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (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 18:24:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:24:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:24:09,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:24:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:24:09,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:24:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:24:09,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:24:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:24:09,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:24:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:24:09,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:24:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:24:09,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:24:17,390 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:24:17,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:24:17 BoogieIcfgContainer [2018-11-07 18:24:17,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:24:17,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:24:17,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:24:17,395 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:24:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:24:07" (1/3) ... [2018-11-07 18:24:17,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0069d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:24:17, skipping insertion in model container [2018-11-07 18:24:17,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:08" (2/3) ... [2018-11-07 18:24:17,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0069d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:24:17, skipping insertion in model container [2018-11-07 18:24:17,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:24:17" (3/3) ... [2018-11-07 18:24:17,399 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label00_false-unreach-call.c [2018-11-07 18:24:17,409 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:24:17,418 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:24:17,435 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:24:17,484 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:24:17,485 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:24:17,485 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:24:17,485 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:24:17,485 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:24:17,485 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:24:17,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:24:17,486 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:24:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 18:24:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-07 18:24:17,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:17,542 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] [2018-11-07 18:24:17,544 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:17,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1170183564, now seen corresponding path program 1 times [2018-11-07 18:24:17,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:17,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:17,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:17,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:17,619 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:18,062 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:24:18,173 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 18:24:18,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:24:18,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:24:18,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:18,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:24:18,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:24:18,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:24:18,223 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 18:24:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:24,746 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 18:24:24,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:24:24,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-07 18:24:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:24,779 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 18:24:24,780 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 18:24:24,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:24:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 18:24:24,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 18:24:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 18:24:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-07 18:24:24,936 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 26 [2018-11-07 18:24:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:24,937 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-07 18:24:24,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:24:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-07 18:24:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 18:24:24,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:24,944 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:24:24,944 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:24,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:24,947 INFO L82 PathProgramCache]: Analyzing trace with hash -246185793, now seen corresponding path program 1 times [2018-11-07 18:24:24,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:24,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:24,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:24,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:24,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:24:25,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:24:25,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:24:25,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:25,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:24:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:24:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:24:25,226 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-07 18:24:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:33,640 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-07 18:24:33,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:24:33,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-11-07 18:24:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:33,662 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 18:24:33,662 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 18:24:33,667 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:24:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 18:24:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 18:24:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 18:24:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-07 18:24:33,763 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 97 [2018-11-07 18:24:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:33,764 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-07 18:24:33,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:24:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-07 18:24:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 18:24:33,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:33,768 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:24:33,769 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:33,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash 424888758, now seen corresponding path program 1 times [2018-11-07 18:24:33,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:33,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:33,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:33,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:33,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:24:34,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:24:34,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:24:34,319 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:34,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:24:34,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:24:34,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:24:34,320 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-07 18:24:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:45,882 INFO L93 Difference]: Finished difference Result 11200 states and 19628 transitions. [2018-11-07 18:24:45,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:24:45,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 18:24:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:45,950 INFO L225 Difference]: With dead ends: 11200 [2018-11-07 18:24:45,950 INFO L226 Difference]: Without dead ends: 8281 [2018-11-07 18:24:45,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:24:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2018-11-07 18:24:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8209. [2018-11-07 18:24:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8209 states. [2018-11-07 18:24:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 12155 transitions. [2018-11-07 18:24:46,230 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 12155 transitions. Word has length 102 [2018-11-07 18:24:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:46,230 INFO L480 AbstractCegarLoop]: Abstraction has 8209 states and 12155 transitions. [2018-11-07 18:24:46,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:24:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 12155 transitions. [2018-11-07 18:24:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 18:24:46,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:46,234 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:24:46,234 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:46,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:46,235 INFO L82 PathProgramCache]: Analyzing trace with hash -778397718, now seen corresponding path program 1 times [2018-11-07 18:24:46,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:46,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:46,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:46,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:46,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:24:46,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:24:46,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:24:46,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:46,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:24:46,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:24:46,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:24:46,395 INFO L87 Difference]: Start difference. First operand 8209 states and 12155 transitions. Second operand 4 states. [2018-11-07 18:24:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:53,479 INFO L93 Difference]: Finished difference Result 29378 states and 47006 transitions. [2018-11-07 18:24:53,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:24:53,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-11-07 18:24:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:53,600 INFO L225 Difference]: With dead ends: 29378 [2018-11-07 18:24:53,601 INFO L226 Difference]: Without dead ends: 21175 [2018-11-07 18:24:53,671 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:24:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21175 states. [2018-11-07 18:24:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21175 to 21175. [2018-11-07 18:24:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21175 states. [2018-11-07 18:24:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21175 states to 21175 states and 31588 transitions. [2018-11-07 18:24:54,303 INFO L78 Accepts]: Start accepts. Automaton has 21175 states and 31588 transitions. Word has length 124 [2018-11-07 18:24:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:54,304 INFO L480 AbstractCegarLoop]: Abstraction has 21175 states and 31588 transitions. [2018-11-07 18:24:54,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:24:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 21175 states and 31588 transitions. [2018-11-07 18:24:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-07 18:24:54,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:54,318 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:54,319 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:54,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash -186406688, now seen corresponding path program 1 times [2018-11-07 18:24:54,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:54,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:54,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:54,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:54,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:54,588 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:24:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:24:54,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:24:54,850 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:24:54,852 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-11-07 18:24:54,854 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:24:54,926 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:24:54,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:24:55,779 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:24:55,783 INFO L272 AbstractInterpreter]: Visited 131 different actions 131 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:24:55,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:55,826 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:24:56,306 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-07 18:24:56,307 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:24:56,624 INFO L415 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2018-11-07 18:24:56,625 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:24:56,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:24:56,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 18:24:56,626 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:56,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:24:56,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:24:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:24:56,628 INFO L87 Difference]: Start difference. First operand 21175 states and 31588 transitions. Second operand 7 states. [2018-11-07 18:25:05,485 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:25:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:25:34,649 INFO L93 Difference]: Finished difference Result 43049 states and 64019 transitions. [2018-11-07 18:25:34,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:25:34,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-11-07 18:25:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:25:34,742 INFO L225 Difference]: With dead ends: 43049 [2018-11-07 18:25:34,742 INFO L226 Difference]: Without dead ends: 21880 [2018-11-07 18:25:34,794 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:25:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21880 states. [2018-11-07 18:25:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21880 to 21878. [2018-11-07 18:25:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21878 states. [2018-11-07 18:25:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21878 states to 21878 states and 32303 transitions. [2018-11-07 18:25:35,442 INFO L78 Accepts]: Start accepts. Automaton has 21878 states and 32303 transitions. Word has length 222 [2018-11-07 18:25:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:25:35,442 INFO L480 AbstractCegarLoop]: Abstraction has 21878 states and 32303 transitions. [2018-11-07 18:25:35,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:25:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 21878 states and 32303 transitions. [2018-11-07 18:25:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-11-07 18:25:35,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:25:35,459 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:25:35,459 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:25:35,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:35,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1943607165, now seen corresponding path program 1 times [2018-11-07 18:25:35,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:25:35,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:35,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:35,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:35,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:25:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:35,980 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:25:36,184 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:25:36,412 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:25:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 116 proven. 202 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:25:36,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:25:36,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:25:36,828 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-11-07 18:25:36,829 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:25:36,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:25:36,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:25:37,487 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:25:37,488 INFO L272 AbstractInterpreter]: Visited 197 different actions 389 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 18:25:37,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:37,527 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:25:37,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:25:37,527 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 18:25:37,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:37,551 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:25:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:37,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:25:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 18:25:38,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:25:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 130 proven. 69 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-11-07 18:25:39,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:25:39,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-11-07 18:25:39,196 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:25:39,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 18:25:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 18:25:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:25:39,199 INFO L87 Difference]: Start difference. First operand 21878 states and 32303 transitions. Second operand 14 states. [2018-11-07 18:26:00,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:26:00,378 INFO L93 Difference]: Finished difference Result 68187 states and 100464 transitions. [2018-11-07 18:26:00,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-07 18:26:00,388 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 409 [2018-11-07 18:26:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:26:00,574 INFO L225 Difference]: With dead ends: 68187 [2018-11-07 18:26:00,574 INFO L226 Difference]: Without dead ends: 45513 [2018-11-07 18:26:00,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 859 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2018-11-07 18:26:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45513 states. [2018-11-07 18:26:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45513 to 44139. [2018-11-07 18:26:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44139 states. [2018-11-07 18:26:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44139 states to 44139 states and 57299 transitions. [2018-11-07 18:26:02,015 INFO L78 Accepts]: Start accepts. Automaton has 44139 states and 57299 transitions. Word has length 409 [2018-11-07 18:26:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:26:02,016 INFO L480 AbstractCegarLoop]: Abstraction has 44139 states and 57299 transitions. [2018-11-07 18:26:02,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 18:26:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 44139 states and 57299 transitions. [2018-11-07 18:26:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2018-11-07 18:26:02,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:26:02,049 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:02,049 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:26:02,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:26:02,050 INFO L82 PathProgramCache]: Analyzing trace with hash 502302544, now seen corresponding path program 1 times [2018-11-07 18:26:02,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:26:02,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:26:02,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:26:02,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:26:02,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:26:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:26:02,711 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:26:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 155 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:26:04,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:26:04,482 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:26:04,482 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 779 with the following transitions: [2018-11-07 18:26:04,483 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:26:04,498 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:26:04,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:26:06,177 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:26:06,178 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:26:06,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:26:06,186 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:26:07,872 INFO L227 lantSequenceWeakener]: Weakened 342 states. On average, predicates are now at 77.57% of their original sizes. [2018-11-07 18:26:07,872 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:26:09,357 INFO L415 sIntCurrentIteration]: We unified 777 AI predicates to 777 [2018-11-07 18:26:09,358 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:26:09,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:26:09,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [11] total 40 [2018-11-07 18:26:09,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:26:09,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 18:26:09,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 18:26:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:26:09,361 INFO L87 Difference]: Start difference. First operand 44139 states and 57299 transitions. Second operand 31 states. [2018-11-07 18:27:04,591 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 18:27:32,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 18:27:32,704 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:27:32,709 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:27:32,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:32 BoogieIcfgContainer [2018-11-07 18:27:32,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:27:32,711 INFO L168 Benchmark]: Toolchain (without parser) took 205677.97 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 18:27:32,712 INFO L168 Benchmark]: CDTParser took 0.23 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 18:27:32,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1643.55 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:32,714 INFO L168 Benchmark]: Boogie Procedure Inliner took 331.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -993.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:32,715 INFO L168 Benchmark]: Boogie Preprocessor took 240.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:32,716 INFO L168 Benchmark]: RCFGBuilder took 8136.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 508.3 MB). Peak memory consumption was 508.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:32,716 INFO L168 Benchmark]: TraceAbstraction took 195318.02 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:27:32,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1643.55 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 331.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -993.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 240.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8136.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 508.3 MB). Peak memory consumption was 508.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195318.02 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). 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: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (44139states) and FLOYD_HOARE automaton (currently 36 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (31635 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 195.2s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 176.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2677 SDtfs, 36705 SDslu, 1706 SDs, 0 SdLazy, 47941 SolverSat, 8976 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1983 GetRequests, 1833 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44139occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9980717505026996 AbsIntWeakeningRatio, 0.06613226452905811 AbsIntAvgWeakeningVarsNumRemoved, 15.12625250501002 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1474 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 2167 NumberOfCodeBlocks, 2167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2567 ConstructedInterpolants, 0 QuantifiedInterpolants, 3808176 SizeOfPredicates, 1 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 951/1513 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown