./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65a8838494b0fa2a560742eb829642f08a5d8cc8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65a8838494b0fa2a560742eb829642f08a5d8cc8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:04:12,320 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:12,322 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:12,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:12,335 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:12,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:12,338 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:12,340 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:12,342 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:12,343 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:12,344 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:12,345 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:12,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:12,347 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:12,348 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:12,349 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:12,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:12,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:12,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:12,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:12,359 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:12,362 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:12,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:12,371 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:12,371 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:12,372 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:12,373 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:12,377 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:12,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:12,380 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:12,382 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:12,383 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:12,383 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:12,383 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:12,386 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:12,388 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:12,388 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:04:12,415 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:12,416 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:12,417 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:12,420 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:12,421 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:12,421 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:12,421 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:12,422 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:12,422 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:12,422 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:04:12,422 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:12,422 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:12,425 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:12,425 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:12,425 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:12,426 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:12,426 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:12,426 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:12,426 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:12,427 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:12,427 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:12,427 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:12,427 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:12,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:12,427 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:12,430 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:12,431 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:12,431 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:04:12,431 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:12,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:04:12,432 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65a8838494b0fa2a560742eb829642f08a5d8cc8 [2018-11-28 18:04:12,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:12,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:12,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:12,513 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:12,514 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:12,514 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c [2018-11-28 18:04:12,583 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edafd5c08/fe5168f155114801a4fd0953bdb269b4/FLAGdf7df6c7d [2018-11-28 18:04:13,011 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:13,011 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c [2018-11-28 18:04:13,020 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edafd5c08/fe5168f155114801a4fd0953bdb269b4/FLAGdf7df6c7d [2018-11-28 18:04:13,402 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edafd5c08/fe5168f155114801a4fd0953bdb269b4 [2018-11-28 18:04:13,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:13,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:13,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:13,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:13,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:13,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d08df33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13, skipping insertion in model container [2018-11-28 18:04:13,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:13,450 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:13,683 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:13,691 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:13,749 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:13,795 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:13,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13 WrapperNode [2018-11-28 18:04:13,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:13,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:13,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:13,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:13,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:13,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:13,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:13,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:13,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (1/1) ... [2018-11-28 18:04:13,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:13,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:13,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:13,929 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:13,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (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 [2018-11-28 18:04:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:04:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:04:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:04:14,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:04:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:04:14,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:04:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 18:04:14,079 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 18:04:14,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:04:14,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:04:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:04:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:04:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:04:14,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:04:14,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:04:14,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:04:14,756 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:04:14,756 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:04:14,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:14 BoogieIcfgContainer [2018-11-28 18:04:14,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:04:14,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:04:14,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:04:14,762 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:04:14,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:13" (1/3) ... [2018-11-28 18:04:14,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeb4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:14, skipping insertion in model container [2018-11-28 18:04:14,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:13" (2/3) ... [2018-11-28 18:04:14,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeb4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:14, skipping insertion in model container [2018-11-28 18:04:14,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:14" (3/3) ... [2018-11-28 18:04:14,768 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231_true-unreach-call.c [2018-11-28 18:04:14,778 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:14,786 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-28 18:04:14,806 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-28 18:04:14,841 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:14,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:14,842 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:14,842 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:14,844 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:14,844 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:14,844 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:14,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:14,845 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-11-28 18:04:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:04:14,876 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:14,877 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 18:04:14,880 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:14,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash -388929614, now seen corresponding path program 1 times [2018-11-28 18:04:14,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:14,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:14,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:14,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:14,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:15,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:15,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:15,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:15,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:15,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:15,074 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-11-28 18:04:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:15,112 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2018-11-28 18:04:15,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:15,113 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-11-28 18:04:15,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:15,127 INFO L225 Difference]: With dead ends: 109 [2018-11-28 18:04:15,127 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 18:04:15,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 18:04:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-28 18:04:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 18:04:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2018-11-28 18:04:15,182 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2018-11-28 18:04:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:15,184 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2018-11-28 18:04:15,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2018-11-28 18:04:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 18:04:15,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:15,187 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 18:04:15,187 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:15,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash 689386628, now seen corresponding path program 1 times [2018-11-28 18:04:15,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:15,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:15,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:15,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:15,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:15,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:15,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:15,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:15,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:15,305 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2018-11-28 18:04:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:15,491 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2018-11-28 18:04:15,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:04:15,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-28 18:04:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:15,494 INFO L225 Difference]: With dead ends: 112 [2018-11-28 18:04:15,494 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 18:04:15,495 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:04:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 18:04:15,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2018-11-28 18:04:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-28 18:04:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2018-11-28 18:04:15,509 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 37 [2018-11-28 18:04:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:15,509 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2018-11-28 18:04:15,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2018-11-28 18:04:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 18:04:15,512 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:15,512 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:15,512 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:15,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash 644534487, now seen corresponding path program 1 times [2018-11-28 18:04:15,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:15,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:15,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:15,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:15,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 18:04:15,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:15,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:15,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:15,668 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 4 states. [2018-11-28 18:04:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:15,729 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2018-11-28 18:04:15,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:15,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-28 18:04:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:15,736 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:15,737 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:15,739 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:15,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-11-28 18:04:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 18:04:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2018-11-28 18:04:15,761 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 42 [2018-11-28 18:04:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:15,761 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2018-11-28 18:04:15,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2018-11-28 18:04:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 18:04:15,767 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:15,767 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:15,768 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:15,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash 768889016, now seen corresponding path program 1 times [2018-11-28 18:04:15,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:15,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:15,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:15,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:15,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 18:04:15,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:15,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:15,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:15,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:15,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:15,889 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 4 states. [2018-11-28 18:04:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:15,978 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2018-11-28 18:04:15,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:15,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-28 18:04:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:15,984 INFO L225 Difference]: With dead ends: 93 [2018-11-28 18:04:15,986 INFO L226 Difference]: Without dead ends: 71 [2018-11-28 18:04:15,986 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:15,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-28 18:04:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-11-28 18:04:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 18:04:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2018-11-28 18:04:15,997 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 45 [2018-11-28 18:04:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:15,998 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2018-11-28 18:04:15,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2018-11-28 18:04:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 18:04:16,000 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:16,001 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:16,001 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:16,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:16,001 INFO L82 PathProgramCache]: Analyzing trace with hash 258354839, now seen corresponding path program 1 times [2018-11-28 18:04:16,002 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:16,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:16,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:16,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 18:04:16,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:16,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:04:16,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:04:16,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:04:16,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:16,077 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 3 states. [2018-11-28 18:04:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:16,129 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2018-11-28 18:04:16,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:04:16,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-28 18:04:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:16,132 INFO L225 Difference]: With dead ends: 70 [2018-11-28 18:04:16,133 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:04:16,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:04:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-28 18:04:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-28 18:04:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2018-11-28 18:04:16,143 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 45 [2018-11-28 18:04:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:16,143 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2018-11-28 18:04:16,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:04:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2018-11-28 18:04:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 18:04:16,145 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:16,146 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:16,146 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:16,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:16,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2126980749, now seen corresponding path program 1 times [2018-11-28 18:04:16,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:04:16,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:04:16,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:16,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:04:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:04:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:04:16,269 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:04:16,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:16 BoogieIcfgContainer [2018-11-28 18:04:16,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:16,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:16,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:16,320 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:16,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:14" (3/4) ... [2018-11-28 18:04:16,325 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:04:16,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:16,326 INFO L168 Benchmark]: Toolchain (without parser) took 2919.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.0 MB in the beginning and 1.0 GB in the end (delta: -77.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:16,328 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:16,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:16,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 1.0 GB. Free memory was 931.2 MB in the beginning and 925.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:16,331 INFO L168 Benchmark]: Boogie Preprocessor took 78.53 ms. Allocated memory is still 1.0 GB. Free memory is still 925.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:16,331 INFO L168 Benchmark]: RCFGBuilder took 831.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 925.8 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:16,332 INFO L168 Benchmark]: TraceAbstraction took 1561.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:16,333 INFO L168 Benchmark]: Witness Printer took 5.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:16,338 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 389.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 1.0 GB. Free memory was 931.2 MB in the beginning and 925.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.53 ms. Allocated memory is still 1.0 GB. Free memory is still 925.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 831.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 925.8 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1561.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 74. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L68] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095044] [L57] return x != x; VAL [\old(x)=2139095044, \result=1, x=2139095044] [L68] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=2139095044, y=2139095043] [L68] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=2139095044, y=2139095043] [L68] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095043] [L57] return x != x; VAL [\old(x)=2139095043, \result=0, x=2139095043] [L68] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095044, y=2139095043] [L68] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095044, y=2139095043] [L68-L69] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=2139095044, y=2139095043] [L68-L69] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L71] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095044, \old(y)=2139095043] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095044] [L13] __uint32_t w; VAL [\old(x)=2139095044, x=2139095044] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=2139095044, \result=0, w=2139095041, x=2139095044] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095044, \old(y)=2139095043, __fpclassify_float(x)=0, x=2139095044, y=2139095043] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=2139095044, \old(y)=2139095043, \result=2139095043, x=2139095044, y=2139095043] [L71] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095043, x=2139095044, y=2139095043] [L71] float res = fmin_float(x, y); [L74] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095044] [L57] return x != x; VAL [\old(x)=2139095044, \result=1, x=2139095044] [L74] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=2139095043, x=2139095044, y=2139095043] [L74] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=2139095043, x=2139095044, y=2139095043] [L74] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095043] [L57] return x != x; VAL [\old(x)=2139095043, \result=0, x=2139095043] [L74] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=2139095043, x=2139095044, y=2139095043] [L74] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=2139095043, x=2139095044, y=2139095043] [L74] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L75] __VERIFIER_error() VAL [res=2139095043, x=2139095044, y=2139095043] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 locations, 2 error locations. UNSAFE Result, 1.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 407 SDtfs, 16 SDslu, 523 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 8870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 33/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:04:18,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:18,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:18,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:18,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:18,716 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:18,717 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:18,720 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:18,722 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:18,723 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:18,724 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:18,724 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:18,725 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:18,727 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:18,728 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:18,729 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:18,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:18,732 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:18,735 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:18,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:18,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:18,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:18,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:18,743 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:18,743 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:18,744 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:18,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:18,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:18,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:18,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:18,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:18,750 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:18,751 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:18,751 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:18,752 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:18,753 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:18,754 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:04:18,776 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:18,778 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:18,779 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:18,779 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:18,781 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:18,781 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:18,781 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:18,781 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:18,781 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:18,782 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:18,782 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:18,782 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:18,782 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:18,782 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:18,782 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:04:18,784 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:04:18,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:18,786 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:18,786 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:18,786 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:18,786 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:18,786 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:18,787 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:18,787 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:18,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:18,787 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:18,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:18,787 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:18,789 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:04:18,789 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:18,789 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:04:18,789 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:04:18,789 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65a8838494b0fa2a560742eb829642f08a5d8cc8 [2018-11-28 18:04:18,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:18,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:18,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:18,877 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:18,878 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:18,879 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c [2018-11-28 18:04:18,951 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87d28aa5/57b1f5c67e0947f38fd0535b23e441f8/FLAG22fb8c5e9 [2018-11-28 18:04:19,425 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:19,426 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1231_true-unreach-call.c [2018-11-28 18:04:19,432 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87d28aa5/57b1f5c67e0947f38fd0535b23e441f8/FLAG22fb8c5e9 [2018-11-28 18:04:19,762 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87d28aa5/57b1f5c67e0947f38fd0535b23e441f8 [2018-11-28 18:04:19,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:19,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:19,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:19,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:19,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:19,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:19" (1/1) ... [2018-11-28 18:04:19,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d20bde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:19, skipping insertion in model container [2018-11-28 18:04:19,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:19" (1/1) ... [2018-11-28 18:04:19,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:19,820 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:20,078 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:20,085 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:20,128 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:20,169 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:20,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20 WrapperNode [2018-11-28 18:04:20,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:20,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:20,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:20,173 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:20,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:20,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:20,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:20,218 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:20,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (1/1) ... [2018-11-28 18:04:20,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:20,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:20,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:20,372 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:20,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (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 [2018-11-28 18:04:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:04:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:04:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-28 18:04:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-28 18:04:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:04:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:04:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-28 18:04:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-28 18:04:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:04:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:04:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:04:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:04:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:04:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:04:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:04:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:04:21,063 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:04:21,148 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:04:21,149 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 18:04:21,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:21 BoogieIcfgContainer [2018-11-28 18:04:21,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:04:21,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:04:21,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:04:21,155 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:04:21,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:19" (1/3) ... [2018-11-28 18:04:21,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0e5d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:21, skipping insertion in model container [2018-11-28 18:04:21,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:20" (2/3) ... [2018-11-28 18:04:21,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0e5d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:04:21, skipping insertion in model container [2018-11-28 18:04:21,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:21" (3/3) ... [2018-11-28 18:04:21,162 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231_true-unreach-call.c [2018-11-28 18:04:21,173 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:21,183 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-28 18:04:21,203 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-28 18:04:21,244 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:21,245 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:21,245 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:21,245 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:21,245 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:21,246 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:21,246 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:21,246 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:21,246 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-11-28 18:04:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 18:04:21,275 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:21,276 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 18:04:21,279 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:21,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:21,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1017347723, now seen corresponding path program 1 times [2018-11-28 18:04:21,290 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:21,290 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:21,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:21,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:21,501 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:21,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:21,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:21,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:21,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:21,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:21,548 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-11-28 18:04:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:21,577 INFO L93 Difference]: Finished difference Result 105 states and 146 transitions. [2018-11-28 18:04:21,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:21,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-11-28 18:04:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:21,591 INFO L225 Difference]: With dead ends: 105 [2018-11-28 18:04:21,591 INFO L226 Difference]: Without dead ends: 59 [2018-11-28 18:04:21,596 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-28 18:04:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-28 18:04:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 18:04:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2018-11-28 18:04:21,649 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 35 [2018-11-28 18:04:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:21,651 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2018-11-28 18:04:21,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2018-11-28 18:04:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:04:21,654 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:21,654 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 18:04:21,654 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:21,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:21,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1223757215, now seen corresponding path program 1 times [2018-11-28 18:04:21,656 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:21,656 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:21,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:21,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:21,864 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:21,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:21,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:21,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:21,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:21,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:21,884 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 4 states. [2018-11-28 18:04:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,015 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2018-11-28 18:04:22,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:04:22,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-28 18:04:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,018 INFO L225 Difference]: With dead ends: 108 [2018-11-28 18:04:22,018 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:04:22,022 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:04:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:04:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2018-11-28 18:04:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 18:04:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2018-11-28 18:04:22,042 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2018-11-28 18:04:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,043 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2018-11-28 18:04:22,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2018-11-28 18:04:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 18:04:22,045 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,045 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,046 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,046 INFO L82 PathProgramCache]: Analyzing trace with hash 435900908, now seen corresponding path program 1 times [2018-11-28 18:04:22,047 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,047 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:22,175 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,190 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2018-11-28 18:04:22,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,242 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2018-11-28 18:04:22,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-28 18:04:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,247 INFO L225 Difference]: With dead ends: 86 [2018-11-28 18:04:22,247 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 18:04:22,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 18:04:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-11-28 18:04:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:22,259 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 41 [2018-11-28 18:04:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,260 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:22,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 18:04:22,262 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,262 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,262 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,263 INFO L82 PathProgramCache]: Analyzing trace with hash -588522803, now seen corresponding path program 1 times [2018-11-28 18:04:22,263 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,263 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:22,403 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,419 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-28 18:04:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,512 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-28 18:04:22,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-28 18:04:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,515 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:22,515 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:22,516 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-28 18:04:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:22,527 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 42 [2018-11-28 18:04:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,528 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:22,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-28 18:04:22,530 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,530 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,530 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash -545646832, now seen corresponding path program 1 times [2018-11-28 18:04:22,531 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,531 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:22,635 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,649 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-28 18:04:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,709 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-28 18:04:22,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-28 18:04:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,713 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:22,713 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:22,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-28 18:04:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:22,724 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 43 [2018-11-28 18:04:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,725 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:22,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 18:04:22,729 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,729 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,729 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1776219087, now seen corresponding path program 1 times [2018-11-28 18:04:22,730 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,730 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:22,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:22,901 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:22,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:22,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:22,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:22,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,917 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-28 18:04:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:22,972 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-28 18:04:22,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:22,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-28 18:04:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:22,975 INFO L225 Difference]: With dead ends: 89 [2018-11-28 18:04:22,975 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 18:04:22,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 18:04:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-28 18:04:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-28 18:04:22,986 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 44 [2018-11-28 18:04:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:22,987 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-28 18:04:22,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-28 18:04:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 18:04:22,990 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:22,990 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:22,990 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:22,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:22,992 INFO L82 PathProgramCache]: Analyzing trace with hash -268667278, now seen corresponding path program 1 times [2018-11-28 18:04:22,992 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:22,992 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:22,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:23,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:23,529 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-28 18:04:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 18:04:23,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:24,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:24,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-11-28 18:04:24,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:04:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:04:24,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:24,716 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 13 states. [2018-11-28 18:04:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:25,620 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2018-11-28 18:04:25,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:25,621 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-11-28 18:04:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:25,623 INFO L225 Difference]: With dead ends: 104 [2018-11-28 18:04:25,623 INFO L226 Difference]: Without dead ends: 90 [2018-11-28 18:04:25,624 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-28 18:04:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2018-11-28 18:04:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 18:04:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2018-11-28 18:04:25,636 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 44 [2018-11-28 18:04:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:25,637 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2018-11-28 18:04:25,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:04:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2018-11-28 18:04:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-28 18:04:25,638 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:25,639 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:25,639 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:25,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:25,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1115369263, now seen corresponding path program 1 times [2018-11-28 18:04:25,640 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:25,640 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:25,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:25,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 18:04:25,841 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:25,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:25,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:04:25,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:04:25,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:04:25,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:04:25,853 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand 8 states. [2018-11-28 18:04:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:26,428 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2018-11-28 18:04:26,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:26,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-28 18:04:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:26,432 INFO L225 Difference]: With dead ends: 133 [2018-11-28 18:04:26,432 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:26,433 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2018-11-28 18:04:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 18:04:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2018-11-28 18:04:26,464 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 46 [2018-11-28 18:04:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:26,464 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2018-11-28 18:04:26,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:04:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2018-11-28 18:04:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-28 18:04:26,466 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:26,466 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:26,466 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:26,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:26,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2005906004, now seen corresponding path program 1 times [2018-11-28 18:04:26,467 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:26,467 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:26,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:26,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:26,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:26,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:26,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:04:26,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:04:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:04:26,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:26,564 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand 3 states. [2018-11-28 18:04:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:26,598 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2018-11-28 18:04:26,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:04:26,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-11-28 18:04:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:26,604 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:04:26,604 INFO L226 Difference]: Without dead ends: 77 [2018-11-28 18:04:26,605 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:04:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-28 18:04:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-11-28 18:04:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-28 18:04:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2018-11-28 18:04:26,616 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 51 [2018-11-28 18:04:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:26,617 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2018-11-28 18:04:26,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:04:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2018-11-28 18:04:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:26,620 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:26,621 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:26,621 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:26,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1686772588, now seen corresponding path program 1 times [2018-11-28 18:04:26,623 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:26,623 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:26,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:26,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:27,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:27,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:27,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-28 18:04:27,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:27,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:27,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:27,371 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand 12 states. [2018-11-28 18:04:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:28,152 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2018-11-28 18:04:28,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:28,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-11-28 18:04:28,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:28,155 INFO L225 Difference]: With dead ends: 102 [2018-11-28 18:04:28,155 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 18:04:28,156 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-28 18:04:28,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 18:04:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2018-11-28 18:04:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-28 18:04:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2018-11-28 18:04:28,169 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 56 [2018-11-28 18:04:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:28,169 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2018-11-28 18:04:28,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2018-11-28 18:04:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 18:04:28,171 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:28,171 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:28,171 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:28,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash 798294838, now seen corresponding path program 1 times [2018-11-28 18:04:28,172 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:28,172 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:28,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:28,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 18:04:28,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 18:04:29,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:29,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-28 18:04:29,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 18:04:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 18:04:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-28 18:04:29,049 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand 19 states. [2018-11-28 18:04:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:30,552 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2018-11-28 18:04:30,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 18:04:30,553 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2018-11-28 18:04:30,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:30,555 INFO L225 Difference]: With dead ends: 116 [2018-11-28 18:04:30,555 INFO L226 Difference]: Without dead ends: 114 [2018-11-28 18:04:30,556 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-11-28 18:04:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-28 18:04:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2018-11-28 18:04:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 18:04:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2018-11-28 18:04:30,568 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 49 [2018-11-28 18:04:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:30,569 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2018-11-28 18:04:30,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 18:04:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2018-11-28 18:04:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:30,570 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:30,570 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:30,571 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:30,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:30,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1349420364, now seen corresponding path program 1 times [2018-11-28 18:04:30,571 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:30,571 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:30,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:30,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 18:04:30,762 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:31,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:31,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2018-11-28 18:04:31,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 18:04:31,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 18:04:31,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-11-28 18:04:31,132 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand 14 states. [2018-11-28 18:04:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:31,988 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2018-11-28 18:04:31,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 18:04:31,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2018-11-28 18:04:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:31,991 INFO L225 Difference]: With dead ends: 142 [2018-11-28 18:04:31,991 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:31,992 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-11-28 18:04:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2018-11-28 18:04:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 18:04:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2018-11-28 18:04:32,003 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 56 [2018-11-28 18:04:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:32,004 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2018-11-28 18:04:32,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 18:04:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2018-11-28 18:04:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-28 18:04:32,005 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:32,005 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:32,006 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:32,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:32,006 INFO L82 PathProgramCache]: Analyzing trace with hash -26719360, now seen corresponding path program 1 times [2018-11-28 18:04:32,006 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:32,006 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:32,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:32,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:32,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:32,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:32,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-28 18:04:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:32,527 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 12 states. [2018-11-28 18:04:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:33,082 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2018-11-28 18:04:33,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:33,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2018-11-28 18:04:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:33,084 INFO L225 Difference]: With dead ends: 92 [2018-11-28 18:04:33,085 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:33,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-28 18:04:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-11-28 18:04:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-28 18:04:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2018-11-28 18:04:33,093 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 58 [2018-11-28 18:04:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:33,093 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2018-11-28 18:04:33,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2018-11-28 18:04:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-28 18:04:33,095 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:33,095 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:33,096 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:33,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash -335762184, now seen corresponding path program 1 times [2018-11-28 18:04:33,096 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:33,096 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:33,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:33,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:33,176 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:33,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:33,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:33,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:33,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:33,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:33,187 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand 4 states. [2018-11-28 18:04:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:33,216 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2018-11-28 18:04:33,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:33,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-28 18:04:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:33,218 INFO L225 Difference]: With dead ends: 116 [2018-11-28 18:04:33,218 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 18:04:33,219 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 18:04:33,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-11-28 18:04:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-28 18:04:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2018-11-28 18:04:33,231 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 54 [2018-11-28 18:04:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:33,231 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2018-11-28 18:04:33,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-11-28 18:04:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-28 18:04:33,232 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:33,232 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:33,233 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:33,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:33,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1557840485, now seen corresponding path program 1 times [2018-11-28 18:04:33,233 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:33,233 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:33,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:33,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:33,365 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:33,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:33,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:33,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:33,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:33,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:33,377 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 4 states. [2018-11-28 18:04:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:33,408 INFO L93 Difference]: Finished difference Result 119 states and 151 transitions. [2018-11-28 18:04:33,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:33,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-28 18:04:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:33,410 INFO L225 Difference]: With dead ends: 119 [2018-11-28 18:04:33,410 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 18:04:33,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 18:04:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-11-28 18:04:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-28 18:04:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2018-11-28 18:04:33,420 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 55 [2018-11-28 18:04:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:33,420 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2018-11-28 18:04:33,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-11-28 18:04:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:33,422 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:33,422 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:33,422 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:33,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:33,422 INFO L82 PathProgramCache]: Analyzing trace with hash -931228901, now seen corresponding path program 1 times [2018-11-28 18:04:33,423 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:33,423 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:33,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:33,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-28 18:04:33,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:33,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:33,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-28 18:04:33,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 18:04:33,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 18:04:33,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:04:33,812 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 11 states. [2018-11-28 18:04:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:34,856 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2018-11-28 18:04:34,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:34,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-11-28 18:04:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:34,861 INFO L225 Difference]: With dead ends: 121 [2018-11-28 18:04:34,861 INFO L226 Difference]: Without dead ends: 119 [2018-11-28 18:04:34,862 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:04:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-11-28 18:04:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 91. [2018-11-28 18:04:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-28 18:04:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2018-11-28 18:04:34,873 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 56 [2018-11-28 18:04:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:34,873 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2018-11-28 18:04:34,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 18:04:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2018-11-28 18:04:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:34,874 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:34,874 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:34,875 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:34,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1062915805, now seen corresponding path program 1 times [2018-11-28 18:04:34,875 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:34,875 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:34,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:34,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:35,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:35,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:04:35,391 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:04:35,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:35,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:35,475 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:35,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:35,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 18:04:35,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:04:35,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:04:35,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:35,777 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand 8 states. [2018-11-28 18:04:36,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:36,895 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2018-11-28 18:04:36,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:04:36,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-11-28 18:04:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:36,897 INFO L225 Difference]: With dead ends: 119 [2018-11-28 18:04:36,898 INFO L226 Difference]: Without dead ends: 99 [2018-11-28 18:04:36,898 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-28 18:04:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2018-11-28 18:04:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 18:04:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2018-11-28 18:04:36,908 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 56 [2018-11-28 18:04:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:36,909 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2018-11-28 18:04:36,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:04:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-28 18:04:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:36,910 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:36,910 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:36,910 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:36,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1505315820, now seen corresponding path program 1 times [2018-11-28 18:04:36,911 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:36,911 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:36,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:36,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:36,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:37,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:37,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:37,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:37,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:37,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:37,009 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 4 states. [2018-11-28 18:04:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:37,036 INFO L93 Difference]: Finished difference Result 127 states and 161 transitions. [2018-11-28 18:04:37,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:37,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-28 18:04:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:37,039 INFO L225 Difference]: With dead ends: 127 [2018-11-28 18:04:37,039 INFO L226 Difference]: Without dead ends: 97 [2018-11-28 18:04:37,040 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-28 18:04:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2018-11-28 18:04:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 18:04:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2018-11-28 18:04:37,050 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 56 [2018-11-28 18:04:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:37,050 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2018-11-28 18:04:37,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-28 18:04:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 18:04:37,051 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:37,052 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:37,052 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:37,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:37,052 INFO L82 PathProgramCache]: Analyzing trace with hash 965908574, now seen corresponding path program 1 times [2018-11-28 18:04:37,052 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:37,053 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:37,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:37,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:37,231 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 18:04:37,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:37,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-11-28 18:04:37,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:04:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:04:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:37,548 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 13 states. [2018-11-28 18:04:38,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:38,111 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2018-11-28 18:04:38,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:38,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2018-11-28 18:04:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:38,114 INFO L225 Difference]: With dead ends: 104 [2018-11-28 18:04:38,115 INFO L226 Difference]: Without dead ends: 85 [2018-11-28 18:04:38,116 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-28 18:04:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-11-28 18:04:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-28 18:04:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2018-11-28 18:04:38,127 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 56 [2018-11-28 18:04:38,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:38,128 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2018-11-28 18:04:38,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:04:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2018-11-28 18:04:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-28 18:04:38,130 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:38,130 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:38,131 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:38,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:38,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1712579960, now seen corresponding path program 1 times [2018-11-28 18:04:38,131 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:38,132 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:38,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:38,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:38,615 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-11-28 18:04:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-28 18:04:38,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:39,064 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:39,269 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:40,193 WARN L180 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:40,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:04:40,651 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:04:40,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:40,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 18:04:40,985 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:41,254 WARN L180 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:41,536 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:41,696 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-11-28 18:04:41,807 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-28 18:04:41,976 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:42,640 WARN L180 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2018-11-28 18:04:42,880 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:43,256 WARN L180 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-28 18:04:43,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:43,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 17 [2018-11-28 18:04:43,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 18:04:43,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 18:04:43,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:43,395 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 17 states. [2018-11-28 18:04:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:45,993 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2018-11-28 18:04:45,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 18:04:45,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2018-11-28 18:04:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:45,996 INFO L225 Difference]: With dead ends: 114 [2018-11-28 18:04:45,996 INFO L226 Difference]: Without dead ends: 90 [2018-11-28 18:04:45,997 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 156 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2018-11-28 18:04:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-28 18:04:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2018-11-28 18:04:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-28 18:04:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2018-11-28 18:04:46,008 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 63 [2018-11-28 18:04:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:46,009 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2018-11-28 18:04:46,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 18:04:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2018-11-28 18:04:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 18:04:46,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:46,010 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:46,010 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:46,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2049769800, now seen corresponding path program 1 times [2018-11-28 18:04:46,015 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:46,015 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:46,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:46,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:46,338 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:46,720 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-28 18:04:47,242 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 18:04:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 18:04:47,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:47,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-11-28 18:04:47,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 18:04:47,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 18:04:47,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2018-11-28 18:04:47,302 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand 21 states. [2018-11-28 18:04:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:48,338 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2018-11-28 18:04:48,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 18:04:48,339 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2018-11-28 18:04:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:48,341 INFO L225 Difference]: With dead ends: 105 [2018-11-28 18:04:48,341 INFO L226 Difference]: Without dead ends: 91 [2018-11-28 18:04:48,341 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2018-11-28 18:04:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-28 18:04:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-11-28 18:04:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-28 18:04:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2018-11-28 18:04:48,349 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 57 [2018-11-28 18:04:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:48,349 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2018-11-28 18:04:48,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 18:04:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2018-11-28 18:04:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 18:04:48,350 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:48,350 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:48,353 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:48,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:48,354 INFO L82 PathProgramCache]: Analyzing trace with hash 685789633, now seen corresponding path program 1 times [2018-11-28 18:04:48,354 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:48,354 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:48,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:48,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:04:48,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:48,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:48,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:04:48,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:04:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:04:48,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:48,454 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 4 states. [2018-11-28 18:04:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:48,475 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2018-11-28 18:04:48,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:04:48,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-28 18:04:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:48,480 INFO L225 Difference]: With dead ends: 111 [2018-11-28 18:04:48,480 INFO L226 Difference]: Without dead ends: 81 [2018-11-28 18:04:48,481 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:04:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-28 18:04:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2018-11-28 18:04:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-28 18:04:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2018-11-28 18:04:48,510 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 57 [2018-11-28 18:04:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:48,510 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2018-11-28 18:04:48,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:04:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2018-11-28 18:04:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 18:04:48,513 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:48,514 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-28 18:04:48,514 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:48,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:48,514 INFO L82 PathProgramCache]: Analyzing trace with hash 276965408, now seen corresponding path program 1 times [2018-11-28 18:04:48,514 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:48,515 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:48,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:48,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:49,034 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-11-28 18:04:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 18:04:49,278 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:49,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:49,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-28 18:04:49,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 18:04:49,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 18:04:49,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:04:49,289 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 15 states. [2018-11-28 18:04:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:51,204 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2018-11-28 18:04:51,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 18:04:51,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-11-28 18:04:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:51,206 INFO L225 Difference]: With dead ends: 107 [2018-11-28 18:04:51,206 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 18:04:51,207 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-11-28 18:04:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 18:04:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2018-11-28 18:04:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-28 18:04:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-11-28 18:04:51,214 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 57 [2018-11-28 18:04:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:51,214 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-11-28 18:04:51,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 18:04:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-11-28 18:04:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-28 18:04:51,217 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:51,217 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:04:51,218 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:51,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash -820099601, now seen corresponding path program 1 times [2018-11-28 18:04:51,218 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:51,218 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:51,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:51,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:04:51,532 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:51,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:51,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:04:51,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:51,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:51,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:51,543 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 12 states. [2018-11-28 18:04:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:52,426 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2018-11-28 18:04:52,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:52,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2018-11-28 18:04:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:52,429 INFO L225 Difference]: With dead ends: 80 [2018-11-28 18:04:52,429 INFO L226 Difference]: Without dead ends: 59 [2018-11-28 18:04:52,429 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:04:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-28 18:04:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-28 18:04:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 18:04:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-28 18:04:52,436 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 70 [2018-11-28 18:04:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:52,436 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-28 18:04:52,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-28 18:04:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-28 18:04:52,440 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:52,440 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:04:52,440 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:52,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:52,441 INFO L82 PathProgramCache]: Analyzing trace with hash -429306586, now seen corresponding path program 1 times [2018-11-28 18:04:52,441 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:52,441 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:04:52,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:52,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:04:52,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:52,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:52,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:04:52,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:52,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:52,945 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 12 states. [2018-11-28 18:04:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:54,028 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2018-11-28 18:04:54,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:54,029 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2018-11-28 18:04:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:54,030 INFO L225 Difference]: With dead ends: 82 [2018-11-28 18:04:54,030 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 18:04:54,031 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:04:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 18:04:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2018-11-28 18:04:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 18:04:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-28 18:04:54,038 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 71 [2018-11-28 18:04:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:54,039 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-28 18:04:54,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:54,039 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-28 18:04:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-28 18:04:54,039 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:54,039 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:04:54,040 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:54,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:54,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1994702002, now seen corresponding path program 1 times [2018-11-28 18:04:54,040 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:54,040 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:54,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:54,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-28 18:04:54,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:54,898 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-28 18:04:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-28 18:04:55,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:55,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-28 18:04:55,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 18:04:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 18:04:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:04:55,335 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 17 states. [2018-11-28 18:04:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:56,380 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-11-28 18:04:56,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:56,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2018-11-28 18:04:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:56,382 INFO L225 Difference]: With dead ends: 88 [2018-11-28 18:04:56,383 INFO L226 Difference]: Without dead ends: 73 [2018-11-28 18:04:56,383 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-11-28 18:04:56,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-28 18:04:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2018-11-28 18:04:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2018-11-28 18:04:56,392 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 71 [2018-11-28 18:04:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:56,392 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2018-11-28 18:04:56,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 18:04:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2018-11-28 18:04:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 18:04:56,393 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:56,394 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:04:56,397 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:56,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:56,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1572781779, now seen corresponding path program 1 times [2018-11-28 18:04:56,397 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:56,398 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:56,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:56,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:04:56,843 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:56,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:56,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:04:56,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:56,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:56,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:56,854 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 12 states. [2018-11-28 18:04:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:58,010 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2018-11-28 18:04:58,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:58,012 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2018-11-28 18:04:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:58,013 INFO L225 Difference]: With dead ends: 87 [2018-11-28 18:04:58,013 INFO L226 Difference]: Without dead ends: 66 [2018-11-28 18:04:58,013 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:04:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-28 18:04:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2018-11-28 18:04:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 18:04:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2018-11-28 18:04:58,019 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 72 [2018-11-28 18:04:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:58,019 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2018-11-28 18:04:58,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2018-11-28 18:04:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 18:04:58,020 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:58,020 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:04:58,021 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:58,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1981385, now seen corresponding path program 1 times [2018-11-28 18:04:58,021 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:58,021 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 31 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:58,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:58,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:58,365 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 18:04:58,650 WARN L180 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-28 18:04:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-28 18:04:58,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:04:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-28 18:04:59,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:04:59,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-28 18:04:59,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 18:04:59,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 18:04:59,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:04:59,214 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 17 states. [2018-11-28 18:04:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:59,804 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-11-28 18:04:59,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:59,805 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2018-11-28 18:04:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:59,806 INFO L225 Difference]: With dead ends: 80 [2018-11-28 18:04:59,806 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 18:04:59,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-11-28 18:04:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 18:04:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2018-11-28 18:04:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 18:04:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2018-11-28 18:04:59,814 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 72 [2018-11-28 18:04:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:59,814 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2018-11-28 18:04:59,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 18:04:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2018-11-28 18:04:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-28 18:04:59,817 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:59,817 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:04:59,817 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:59,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:59,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1985418442, now seen corresponding path program 1 times [2018-11-28 18:04:59,819 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:59,819 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:59,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:59,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 18:05:00,227 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:00,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:00,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:05:00,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:05:00,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:05:00,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:00,238 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 12 states. [2018-11-28 18:05:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:01,189 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2018-11-28 18:05:01,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:05:01,191 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2018-11-28 18:05:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:01,192 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:05:01,193 INFO L226 Difference]: Without dead ends: 57 [2018-11-28 18:05:01,193 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:05:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-28 18:05:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2018-11-28 18:05:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 18:05:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2018-11-28 18:05:01,199 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 73 [2018-11-28 18:05:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:01,199 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2018-11-28 18:05:01,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:05:01,199 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2018-11-28 18:05:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-28 18:05:01,200 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:01,200 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 18:05:01,200 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:01,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1616447157, now seen corresponding path program 1 times [2018-11-28 18:05:01,201 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:01,201 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 33 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:01,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:01,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 18:05:01,286 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:01,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:01,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:01,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:01,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:01,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:01,298 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 4 states. [2018-11-28 18:05:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:01,309 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-11-28 18:05:01,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:01,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-28 18:05:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:01,311 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:05:01,311 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:05:01,312 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:05:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:05:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:05:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:05:01,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2018-11-28 18:05:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:01,313 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:05:01,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:05:01,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:05:01,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:05:01,941 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 13 [2018-11-28 18:05:01,945 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 57) no Hoare annotation was computed. [2018-11-28 18:05:01,945 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 57) the Hoare annotation is: true [2018-11-28 18:05:01,945 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 57) no Hoare annotation was computed. [2018-11-28 18:05:01,947 INFO L451 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-11-28 18:05:01,947 INFO L448 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-28 18:05:01,947 INFO L448 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-28 18:05:01,947 INFO L448 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-28 18:05:01,947 INFO L448 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-11-28 18:05:01,947 INFO L444 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-28 18:05:01,947 INFO L448 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-11-28 18:05:01,948 INFO L444 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-28 18:05:01,948 INFO L448 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-11-28 18:05:01,948 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:05:01,948 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:05:01,948 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:05:01,948 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:05:01,948 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:05:01,948 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:05:01,948 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:05:01,948 INFO L444 ceAbstractionStarter]: At program point L68-3(line 68) the Hoare annotation is: (and (= (_ bv1 32) |main_#t~ret9|) |main_#t~short11| (not (fp.eq main_~x~0 main_~x~0))) [2018-11-28 18:05:01,948 INFO L448 ceAbstractionStarter]: For program point L68-4(line 68) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L68-6(line 68) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L68-7(lines 68 69) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L68-9(lines 68 84) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L68-11(lines 68 84) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 59 87) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L81(line 81) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L444 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (not |main_#t~short11|)) (.cse2 (fp.eq main_~x~0 main_~x~0)) (.cse1 (not |main_#t~short15|))) (or (and .cse0 .cse1 (= (_ bv1 32) |main_#t~ret9|) (= (bvadd |main_#t~ret10| (_ bv4294967295 32)) (_ bv0 32)) (not (fp.eq main_~y~0 main_~y~0)) (not .cse2)) (and .cse0 .cse2 .cse1 (= (_ bv0 32) |main_#t~ret9|)))) [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-11-28 18:05:01,949 INFO L448 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-11-28 18:05:01,950 INFO L444 ceAbstractionStarter]: At program point L69-3(line 69) the Hoare annotation is: (and |main_#t~short14| (not |main_#t~short11|) (fp.eq main_~x~0 main_~x~0) (not |main_#t~short15|) (= |main_#t~ret12| (_ bv0 32)) (= (_ bv0 32) |main_#t~ret9|)) [2018-11-28 18:05:01,951 INFO L448 ceAbstractionStarter]: For program point L69-4(line 69) no Hoare annotation was computed. [2018-11-28 18:05:01,951 INFO L448 ceAbstractionStarter]: For program point L69-6(line 69) no Hoare annotation was computed. [2018-11-28 18:05:01,951 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 75) no Hoare annotation was computed. [2018-11-28 18:05:01,951 INFO L444 ceAbstractionStarter]: At program point L74(line 74) the Hoare annotation is: (let ((.cse1 (fp.eq main_~x~0 main_~x~0)) (.cse0 (fp.eq main_~y~0 main_~y~0))) (or (and (and (= main_~y~0 main_~res~0) .cse0) (not .cse1)) (and (= main_~x~0 main_~res~0) .cse1 (not .cse0)))) [2018-11-28 18:05:01,951 INFO L448 ceAbstractionStarter]: For program point L74-1(line 74) no Hoare annotation was computed. [2018-11-28 18:05:01,951 INFO L448 ceAbstractionStarter]: For program point L74-2(line 74) no Hoare annotation was computed. [2018-11-28 18:05:01,951 INFO L444 ceAbstractionStarter]: At program point L74-3(line 74) the Hoare annotation is: (and (= main_~y~0 main_~res~0) |main_#t~short19| (fp.eq main_~y~0 main_~y~0) (not (fp.eq main_~x~0 main_~x~0))) [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point L74-4(line 74) no Hoare annotation was computed. [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point L74-6(lines 74 77) no Hoare annotation was computed. [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 59 87) no Hoare annotation was computed. [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point L75(line 75) no Hoare annotation was computed. [2018-11-28 18:05:01,952 INFO L444 ceAbstractionStarter]: At program point L71(line 71) the Hoare annotation is: (let ((.cse1 (fp.eq main_~y~0 main_~y~0)) (.cse0 (fp.eq main_~x~0 main_~x~0))) (or (and .cse0 (not .cse1)) (and .cse1 (not .cse0)))) [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point L71-1(line 71) no Hoare annotation was computed. [2018-11-28 18:05:01,952 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 59 87) the Hoare annotation is: true [2018-11-28 18:05:01,952 INFO L444 ceAbstractionStarter]: At program point L80(line 80) the Hoare annotation is: (or (and (= main_~x~0 main_~res~0) (not (fp.eq main_~y~0 main_~y~0))) (not (fp.eq main_~x~0 main_~x~0))) [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point L80-1(line 80) no Hoare annotation was computed. [2018-11-28 18:05:01,952 INFO L448 ceAbstractionStarter]: For program point L80-2(line 80) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L444 ceAbstractionStarter]: At program point L80-3(line 80) the Hoare annotation is: (and (= main_~x~0 main_~res~0) (fp.eq main_~x~0 main_~x~0) |main_#t~short22| (not (fp.eq main_~y~0 main_~y~0))) [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point L80-4(line 80) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point L80-6(lines 80 83) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L451 ceAbstractionStarter]: At program point L68(line 68) the Hoare annotation is: true [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point L68-1(line 68) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point L68-2(line 68) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-11-28 18:05:01,953 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-11-28 18:05:01,955 INFO L448 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-11-28 18:05:01,955 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-11-28 18:05:01,955 INFO L448 ceAbstractionStarter]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2018-11-28 18:05:01,955 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-11-28 18:05:01,955 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-11-28 18:05:01,955 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-11-28 18:05:01,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:01 BoogieIcfgContainer [2018-11-28 18:05:01,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:01,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:01,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:01,975 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:01,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:04:21" (3/4) ... [2018-11-28 18:05:01,981 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:05:01,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-28 18:05:01,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-11-28 18:05:01,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:05:01,991 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:05:01,991 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-28 18:05:02,001 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-28 18:05:02,001 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 18:05:02,004 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:05:02,035 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-28 18:05:02,093 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:02,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:02,096 INFO L168 Benchmark]: Toolchain (without parser) took 42324.97 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 345.5 MB). Free memory was 954.0 MB in the beginning and 988.6 MB in the end (delta: -34.6 MB). Peak memory consumption was 310.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,096 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:02,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.16 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.48 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 937.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,097 INFO L168 Benchmark]: Boogie Preprocessor took 153.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,100 INFO L168 Benchmark]: RCFGBuilder took 778.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,101 INFO L168 Benchmark]: TraceAbstraction took 40822.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 215.5 MB). Free memory was 1.1 GB in the beginning and 998.5 MB in the end (delta: 99.5 MB). Peak memory consumption was 315.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,101 INFO L168 Benchmark]: Witness Printer took 119.55 ms. Allocated memory is still 1.4 GB. Free memory was 998.5 MB in the beginning and 988.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,105 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 396.16 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.48 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 937.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 153.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 778.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 40822.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 215.5 MB). Free memory was 1.1 GB in the beginning and 998.5 MB in the end (delta: 99.5 MB). Peak memory consumption was 315.0 MB. Max. memory is 11.5 GB. * Witness Printer took 119.55 ms. Allocated memory is still 1.4 GB. Free memory was 998.5 MB in the beginning and 988.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 75]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 2 error locations. SAFE Result, 40.7s OverallTime, 30 OverallIterations, 6 TraceHistogramMax, 19.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 2020 SDtfs, 977 SDslu, 10318 SDs, 0 SdLazy, 4685 SolverSat, 240 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2467 GetRequests, 2132 SyntacticMatches, 8 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 30 MinimizatonAttempts, 186 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 153 PreInvPairs, 175 NumberOfFragments, 161 HoareAnnotationTreeSize, 153 FomulaSimplifications, 783 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 1789 NumberOfCodeBlocks, 1789 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2267 ConstructedInterpolants, 32 QuantifiedInterpolants, 431671 SizeOfPredicates, 142 NumberOfNonLiveVariables, 3861 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 41 InterpolantComputations, 19 PerfectInterpolantSequences, 1034/1154 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...