./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer --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 f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer --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 f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:50,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:50,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:50,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:50,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:50,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:50,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:50,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:50,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:50,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:50,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:50,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:50,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:50,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:50,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:50,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:50,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:50,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:50,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:50,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:50,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:50,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:50,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:50,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:50,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:50,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:50,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:50,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:50,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:50,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:50,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:50,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:50,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:50,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:50,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:50,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:50,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:50,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:50,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:50,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:50,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:50,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:00:50,208 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:50,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:50,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:50,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:50,210 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:50,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:50,210 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:50,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:50,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:50,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:50,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:50,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:50,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:50,212 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:50,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:50,212 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:50,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:50,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:50,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:50,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:50,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:50,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:50,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:50,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:50,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:50,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:50,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:50,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:50,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-10-22 09:00:50,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:50,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:50,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:50,273 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:50,274 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:50,274 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-10-22 09:00:50,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/50d53194e/6177c1aacbbf4a4781cbabb4ff4f5d5f/FLAG2f92bee48 [2019-10-22 09:00:50,684 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:50,685 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-10-22 09:00:50,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/50d53194e/6177c1aacbbf4a4781cbabb4ff4f5d5f/FLAG2f92bee48 [2019-10-22 09:00:51,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/50d53194e/6177c1aacbbf4a4781cbabb4ff4f5d5f [2019-10-22 09:00:51,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:51,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:51,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:51,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:51,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:51,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105a95a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51, skipping insertion in model container [2019-10-22 09:00:51,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,112 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:51,128 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:51,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:51,353 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:51,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:51,391 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:51,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51 WrapperNode [2019-10-22 09:00:51,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:51,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:51,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:51,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:51,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:51,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:51,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:51,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:51,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... [2019-10-22 09:00:51,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:51,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:51,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:51,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:51,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 09:00:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:51,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:00:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:00:51,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:00:51,812 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:51,812 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 09:00:51,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:51 BoogieIcfgContainer [2019-10-22 09:00:51,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:51,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:51,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:51,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:51,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:51" (1/3) ... [2019-10-22 09:00:51,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e972f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:51, skipping insertion in model container [2019-10-22 09:00:51,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:51" (2/3) ... [2019-10-22 09:00:51,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e972f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:51, skipping insertion in model container [2019-10-22 09:00:51,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:51" (3/3) ... [2019-10-22 09:00:51,833 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-10-22 09:00:51,846 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:51,864 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:00:51,875 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:00:51,908 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:51,918 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:51,919 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:51,919 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:51,919 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:51,919 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:51,919 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:51,920 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-22 09:00:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:51,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:51,941 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:51,942 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-10-22 09:00:51,961 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:51,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858440080] [2019-10-22 09:00:51,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:51,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:51,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:52,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858440080] [2019-10-22 09:00:52,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:52,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:52,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204492051] [2019-10-22 09:00:52,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:00:52,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:52,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:00:52,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:00:52,097 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-22 09:00:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:52,118 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-10-22 09:00:52,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:00:52,121 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-22 09:00:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:52,133 INFO L225 Difference]: With dead ends: 62 [2019-10-22 09:00:52,133 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 09:00:52,136 INFO L600 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 [2019-10-22 09:00:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 09:00:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 09:00:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 09:00:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-10-22 09:00:52,172 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-10-22 09:00:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:52,172 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-10-22 09:00:52,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:00:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-10-22 09:00:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:00:52,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:52,173 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:52,174 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:52,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:52,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-10-22 09:00:52,174 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:52,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408302899] [2019-10-22 09:00:52,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:52,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:52,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:52,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408302899] [2019-10-22 09:00:52,253 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:52,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:52,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243465312] [2019-10-22 09:00:52,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:52,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:52,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:52,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:52,255 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-10-22 09:00:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:52,317 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-10-22 09:00:52,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:52,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 09:00:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:52,319 INFO L225 Difference]: With dead ends: 53 [2019-10-22 09:00:52,319 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 09:00:52,320 INFO L600 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 [2019-10-22 09:00:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 09:00:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-10-22 09:00:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 09:00:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-10-22 09:00:52,328 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-10-22 09:00:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:52,329 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-10-22 09:00:52,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-10-22 09:00:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:52,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:52,330 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:52,330 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-10-22 09:00:52,331 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:52,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374387017] [2019-10-22 09:00:52,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:52,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:52,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:52,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374387017] [2019-10-22 09:00:52,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:52,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:52,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723236264] [2019-10-22 09:00:52,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:52,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:52,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:52,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:52,388 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-10-22 09:00:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:52,460 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-10-22 09:00:52,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:52,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-22 09:00:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:52,461 INFO L225 Difference]: With dead ends: 55 [2019-10-22 09:00:52,461 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 09:00:52,462 INFO L600 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 [2019-10-22 09:00:52,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 09:00:52,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-10-22 09:00:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 09:00:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-10-22 09:00:52,466 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-10-22 09:00:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:52,467 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-10-22 09:00:52,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-10-22 09:00:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:52,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:52,468 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:52,468 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-10-22 09:00:52,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:52,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875787670] [2019-10-22 09:00:52,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:52,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:52,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:52,522 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:52,522 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:00:52,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:52 BoogieIcfgContainer [2019-10-22 09:00:52,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:52,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:52,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:52,550 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:52,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:51" (3/4) ... [2019-10-22 09:00:52,553 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:52,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:52,555 INFO L168 Benchmark]: Toolchain (without parser) took 1456.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 945.8 MB in the beginning and 1.0 GB in the end (delta: -86.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:52,556 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:52,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:52,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:52,557 INFO L168 Benchmark]: Boogie Preprocessor took 26.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:52,558 INFO L168 Benchmark]: RCFGBuilder took 354.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:52,558 INFO L168 Benchmark]: TraceAbstraction took 726.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:52,559 INFO L168 Benchmark]: Witness Printer took 7.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:52,562 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 354.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 726.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * Witness Printer took 7.59 ms. Allocated memory is still 1.1 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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-cad4683 [2019-10-22 09:00:54,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:54,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:54,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:54,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:54,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:54,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:54,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:54,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:54,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:54,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:54,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:54,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:54,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:54,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:54,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:54,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:54,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:54,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:54,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:54,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:54,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:54,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:54,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:54,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:54,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:54,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:54,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:54,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:54,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:54,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:54,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:54,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:54,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:54,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:54,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:54,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:54,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:54,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:54,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:54,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:54,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 09:00:54,697 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:54,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:54,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:54,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:54,698 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:54,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:54,699 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:00:54,700 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:00:54,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:54,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:54,700 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:54,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:54,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:54,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:54,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:54,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:54,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:54,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:54,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:54,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:54,702 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:00:54,702 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:00:54,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:54,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:00:54,702 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-10-22 09:00:54,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:54,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:54,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:54,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:54,748 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:54,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-10-22 09:00:54,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/8842ec55a/526a6079e833411799306bebed24f5df/FLAG7925c4080 [2019-10-22 09:00:55,185 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:55,186 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-10-22 09:00:55,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/8842ec55a/526a6079e833411799306bebed24f5df/FLAG7925c4080 [2019-10-22 09:00:55,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/data/8842ec55a/526a6079e833411799306bebed24f5df [2019-10-22 09:00:55,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:55,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:55,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:55,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:55,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:55,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6586a83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55, skipping insertion in model container [2019-10-22 09:00:55,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,221 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:55,237 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:55,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:55,398 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:55,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:55,444 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:55,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55 WrapperNode [2019-10-22 09:00:55,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:55,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:55,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:55,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:55,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:55,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:55,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:55,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:55,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... [2019-10-22 09:00:55,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:55,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:55,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:55,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:55,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 09:00:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-10-22 09:00:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:00:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:00:56,029 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:56,030 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 09:00:56,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:56 BoogieIcfgContainer [2019-10-22 09:00:56,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:56,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:56,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:56,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:56,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:55" (1/3) ... [2019-10-22 09:00:56,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b7e4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:56, skipping insertion in model container [2019-10-22 09:00:56,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:55" (2/3) ... [2019-10-22 09:00:56,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b7e4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:56, skipping insertion in model container [2019-10-22 09:00:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:56" (3/3) ... [2019-10-22 09:00:56,038 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-10-22 09:00:56,047 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:56,055 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:00:56,065 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:00:56,087 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:56,088 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:56,088 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:56,088 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:56,088 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:56,088 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:56,088 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:56,088 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-22 09:00:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:56,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:56,109 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:56,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:56,115 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-10-22 09:00:56,121 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:56,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588476461] [2019-10-22 09:00:56,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:56,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 09:00:56,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:56,202 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:56,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588476461] [2019-10-22 09:00:56,207 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:56,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 09:00:56,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616784711] [2019-10-22 09:00:56,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:00:56,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:56,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:00:56,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:00:56,226 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-22 09:00:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:56,241 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-10-22 09:00:56,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:00:56,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-22 09:00:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:56,253 INFO L225 Difference]: With dead ends: 62 [2019-10-22 09:00:56,253 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 09:00:56,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:00:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 09:00:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 09:00:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 09:00:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-10-22 09:00:56,290 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-10-22 09:00:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:56,291 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-10-22 09:00:56,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:00:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-10-22 09:00:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:00:56,291 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:56,292 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:56,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 09:00:56,493 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-10-22 09:00:56,494 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:56,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826351691] [2019-10-22 09:00:56,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:56,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:00:56,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:56,588 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:56,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826351691] [2019-10-22 09:00:56,615 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:56,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 09:00:56,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065416471] [2019-10-22 09:00:56,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:56,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:56,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:56,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:56,617 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-10-22 09:00:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:56,752 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-10-22 09:00:56,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:56,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 09:00:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:56,756 INFO L225 Difference]: With dead ends: 68 [2019-10-22 09:00:56,756 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 09:00:56,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 09:00:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-10-22 09:00:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 09:00:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-10-22 09:00:56,763 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-10-22 09:00:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:56,764 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-10-22 09:00:56,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-10-22 09:00:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:00:56,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:56,765 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:56,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 09:00:56,965 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:56,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-10-22 09:00:56,966 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:56,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514060253] [2019-10-22 09:00:56,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:57,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:00:57,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:57,053 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:57,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514060253] [2019-10-22 09:00:57,082 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:57,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-10-22 09:00:57,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856371752] [2019-10-22 09:00:57,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:57,083 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:57,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:57,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:57,085 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-10-22 09:00:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:57,140 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-10-22 09:00:57,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:57,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-22 09:00:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:57,142 INFO L225 Difference]: With dead ends: 52 [2019-10-22 09:00:57,142 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 09:00:57,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 09:00:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-22 09:00:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 09:00:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-10-22 09:00:57,147 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-10-22 09:00:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:57,148 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-10-22 09:00:57,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-10-22 09:00:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:00:57,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:57,149 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:57,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 09:00:57,350 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:57,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:57,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-10-22 09:00:57,351 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:57,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227809316] [2019-10-22 09:00:57,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:57,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:00:57,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:57,426 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:57,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227809316] [2019-10-22 09:00:57,443 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:57,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 09:00:57,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967296852] [2019-10-22 09:00:57,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:57,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:57,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:57,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:57,444 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-10-22 09:00:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:57,508 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-10-22 09:00:57,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:57,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-22 09:00:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:57,510 INFO L225 Difference]: With dead ends: 61 [2019-10-22 09:00:57,510 INFO L226 Difference]: Without dead ends: 52 [2019-10-22 09:00:57,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-22 09:00:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-10-22 09:00:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 09:00:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-10-22 09:00:57,515 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-10-22 09:00:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:57,516 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-10-22 09:00:57,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-10-22 09:00:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:00:57,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:57,516 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:57,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-10-22 09:00:57,717 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-10-22 09:00:57,718 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:57,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741093675] [2019-10-22 09:00:57,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:57,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:00:57,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:57,796 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:57,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741093675] [2019-10-22 09:00:57,820 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:57,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 09:00:57,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501059930] [2019-10-22 09:00:57,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:57,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:57,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:57,822 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-10-22 09:00:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:57,836 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-10-22 09:00:57,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:57,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-22 09:00:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:57,838 INFO L225 Difference]: With dead ends: 38 [2019-10-22 09:00:57,839 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 09:00:57,839 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 09:00:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 09:00:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 09:00:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-22 09:00:57,842 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-10-22 09:00:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:57,842 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-22 09:00:57,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-22 09:00:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:00:57,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:57,843 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:58,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-10-22 09:00:58,044 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-10-22 09:00:58,045 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:58,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436983749] [2019-10-22 09:00:58,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:58,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:58,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:58,157 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:58,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:58,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436983749] [2019-10-22 09:00:58,211 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:58,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-22 09:00:58,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769984050] [2019-10-22 09:00:58,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:00:58,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:00:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:58,213 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-10-22 09:00:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:58,319 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-10-22 09:00:58,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:58,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-10-22 09:00:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:58,321 INFO L225 Difference]: With dead ends: 40 [2019-10-22 09:00:58,321 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 09:00:58,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:00:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 09:00:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-10-22 09:00:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 09:00:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-22 09:00:58,326 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-10-22 09:00:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:58,326 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-22 09:00:58,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:00:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-22 09:00:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:00:58,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:58,329 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:58,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-10-22 09:00:58,535 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:58,535 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-10-22 09:00:58,536 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:58,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255003059] [2019-10-22 09:00:58,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:58,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:00:58,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:58,630 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:58,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255003059] [2019-10-22 09:00:58,650 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:58,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 09:00:58,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815846360] [2019-10-22 09:00:58,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:58,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:58,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:58,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:58,651 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-10-22 09:00:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:58,703 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-10-22 09:00:58,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:58,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-22 09:00:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:58,705 INFO L225 Difference]: With dead ends: 43 [2019-10-22 09:00:58,705 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 09:00:58,706 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 09:00:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 09:00:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 09:00:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-10-22 09:00:58,709 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-10-22 09:00:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:58,710 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-10-22 09:00:58,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-10-22 09:00:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:00:58,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:58,710 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:58,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-10-22 09:00:58,911 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-10-22 09:00:58,912 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:58,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766786186] [2019-10-22 09:00:58,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/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 [2019-10-22 09:00:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:58,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 09:00:58,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:59,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:59,062 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:59,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:59,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766786186] [2019-10-22 09:00:59,241 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:59,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-10-22 09:00:59,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954741782] [2019-10-22 09:00:59,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 09:00:59,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 09:00:59,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:00:59,242 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-10-22 09:00:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:59,442 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-10-22 09:00:59,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:00:59,443 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-10-22 09:00:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:59,444 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:00:59,444 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:00:59,445 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-10-22 09:00:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:00:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:00:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:00:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:59,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-22 09:00:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:59,446 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:59,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 09:00:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:59,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:00:59,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-10-22 09:00:59,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:00:59,876 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-10-22 09:00:59,876 INFO L443 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-10-22 09:00:59,876 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:00:59,876 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:00:59,876 INFO L443 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-10-22 09:00:59,876 INFO L443 ceAbstractionStarter]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-10-22 09:00:59,877 INFO L439 ceAbstractionStarter]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short9| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2019-10-22 09:00:59,877 INFO L443 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2019-10-22 09:00:59,877 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-10-22 09:00:59,877 INFO L443 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-10-22 09:00:59,877 INFO L443 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-10-22 09:00:59,877 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2019-10-22 09:00:59,877 INFO L443 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-10-22 09:00:59,877 INFO L443 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-10-22 09:00:59,878 INFO L439 ceAbstractionStarter]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-10-22 09:00:59,878 INFO L443 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-10-22 09:00:59,878 INFO L443 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-10-22 09:00:59,878 INFO L439 ceAbstractionStarter]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2019-10-22 09:00:59,878 INFO L439 ceAbstractionStarter]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-10-22 09:00:59,878 INFO L443 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-10-22 09:00:59,879 INFO L439 ceAbstractionStarter]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short9|) [2019-10-22 09:00:59,879 INFO L443 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-10-22 09:00:59,879 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 09:00:59,879 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-10-22 09:00:59,879 INFO L443 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-10-22 09:00:59,879 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:00:59,879 INFO L443 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-10-22 09:00:59,880 INFO L446 ceAbstractionStarter]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-10-22 09:00:59,880 INFO L443 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-10-22 09:00:59,880 INFO L443 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-10-22 09:00:59,880 INFO L439 ceAbstractionStarter]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|)) [2019-10-22 09:00:59,880 INFO L443 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-10-22 09:00:59,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:59 BoogieIcfgContainer [2019-10-22 09:00:59,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:59,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:59,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:59,897 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:59,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:56" (3/4) ... [2019-10-22 09:00:59,901 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:00:59,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-10-22 09:00:59,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-10-22 09:00:59,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 09:00:59,941 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result [2019-10-22 09:00:59,941 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result [2019-10-22 09:00:59,942 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2019-10-22 09:00:59,942 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x [2019-10-22 09:00:59,942 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2019-10-22 09:00:59,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_42b323d9-be01-47a0-89ee-3354bfb93289/bin/uautomizer/witness.graphml [2019-10-22 09:00:59,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:59,981 INFO L168 Benchmark]: Toolchain (without parser) took 4774.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.3 MB in the beginning and 835.8 MB in the end (delta: 116.5 MB). Peak memory consumption was 252.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:59,981 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:59,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:59,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:59,982 INFO L168 Benchmark]: Boogie Preprocessor took 58.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:59,982 INFO L168 Benchmark]: RCFGBuilder took 384.58 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:59,983 INFO L168 Benchmark]: TraceAbstraction took 3864.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 835.8 MB in the end (delta: 260.6 MB). Peak memory consumption was 260.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:59,983 INFO L168 Benchmark]: Witness Printer took 82.77 ms. Allocated memory is still 1.2 GB. Free memory is still 835.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:59,985 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 142.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 384.58 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3864.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 835.8 MB in the end (delta: 260.6 MB). Peak memory consumption was 260.6 MB. Max. memory is 11.5 GB. * Witness Printer took 82.77 ms. Allocated memory is still 1.2 GB. Free memory is still 835.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...