./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float22.i --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/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 08947af3b6f9b8a272faa540a059213a9b1de888 .................................................................................................................................................................................................................................................................................................................................... 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/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 08947af3b6f9b8a272faa540a059213a9b1de888 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:53:10,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:53:10,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:53:10,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:53:10,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:53:10,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:53:10,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:53:10,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:53:10,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:53:10,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:53:10,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:53:10,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:53:10,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:53:10,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:53:10,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:53:10,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:53:10,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:53:10,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:53:10,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:53:10,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:53:10,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:53:10,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:53:10,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:53:10,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:53:10,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:53:10,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:53:10,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:53:10,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:53:10,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:53:10,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:53:10,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:53:10,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:53:10,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:53:10,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:53:10,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:53:10,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:53:10,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:53:10,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:53:10,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:53:10,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:53:10,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:53:10,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:53:10,291 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:53:10,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:53:10,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:53:10,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:53:10,293 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:53:10,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:53:10,293 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:53:10,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:53:10,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:53:10,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:53:10,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:53:10,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:53:10,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:53:10,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:53:10,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:53:10,295 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:53:10,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:53:10,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:53:10,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:53:10,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:53:10,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:53:10,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:53:10,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:53:10,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:53:10,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:53:10,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:53:10,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:53:10,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:53:10,297 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/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-11-15 23:53:10,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:53:10,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:53:10,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:53:10,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:53:10,336 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:53:10,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-15 23:53:10,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/ce882711d/6fac7a50b8fd468c90f7782e896b1665/FLAG4dfc485dd [2019-11-15 23:53:10,796 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:53:10,797 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-15 23:53:10,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/ce882711d/6fac7a50b8fd468c90f7782e896b1665/FLAG4dfc485dd [2019-11-15 23:53:10,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/ce882711d/6fac7a50b8fd468c90f7782e896b1665 [2019-11-15 23:53:10,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:53:10,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:53:10,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:53:10,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:53:10,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:53:10,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:53:10" (1/1) ... [2019-11-15 23:53:10,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2370193f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:10, skipping insertion in model container [2019-11-15 23:53:10,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:53:10" (1/1) ... [2019-11-15 23:53:10,848 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:53:10,876 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:53:11,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:53:11,150 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:53:11,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:53:11,201 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:53:11,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11 WrapperNode [2019-11-15 23:53:11,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:53:11,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:53:11,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:53:11,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:53:11,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:53:11,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:53:11,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:53:11,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:53:11,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... [2019-11-15 23:53:11,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:53:11,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:53:11,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:53:11,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:53:11,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 [2019-11-15 23:53:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:53:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 23:53:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:53:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:53:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:53:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:53:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:53:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:53:11,926 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:53:11,926 INFO L284 CfgBuilder]: Removed 26 assume(true) statements. [2019-11-15 23:53:11,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:11 BoogieIcfgContainer [2019-11-15 23:53:11,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:53:11,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:53:11,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:53:11,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:53:11,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:53:10" (1/3) ... [2019-11-15 23:53:11,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cd7733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:53:11, skipping insertion in model container [2019-11-15 23:53:11,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:11" (2/3) ... [2019-11-15 23:53:11,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cd7733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:53:11, skipping insertion in model container [2019-11-15 23:53:11,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:11" (3/3) ... [2019-11-15 23:53:11,933 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-11-15 23:53:11,940 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:53:11,947 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:53:11,956 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:53:11,979 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:53:11,980 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:53:11,980 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:53:11,980 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:53:11,980 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:53:11,981 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:53:11,981 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:53:11,981 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:53:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 23:53:12,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 23:53:12,001 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:53:12,001 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 23:53:12,003 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:53:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:53:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-11-15 23:53:12,016 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:53:12,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127658055] [2019-11-15 23:53:12,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:53:12,017 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:53:12,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:53:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:53:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:53:12,250 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:53:12,251 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:53:12,267 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,268 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,268 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,268 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,269 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,270 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,270 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,271 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,271 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,272 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,272 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,272 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,273 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,273 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,273 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-11-15 23:53:12,282 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-15 23:53:12,283 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-15 23:53:12,284 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-15 23:53:12,285 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-15 23:53:12,285 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-15 23:53:12,285 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-15 23:53:12,286 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-15 23:53:12,286 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-15 23:53:12,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-15 23:53:12,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-11-15 23:53:12,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-11-15 23:53:12,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-11-15 23:53:12,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:53:12 BoogieIcfgContainer [2019-11-15 23:53:12,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:53:12,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:53:12,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:53:12,300 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:53:12,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:11" (3/4) ... [2019-11-15 23:53:12,305 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:53:12,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:53:12,309 INFO L168 Benchmark]: Toolchain (without parser) took 1475.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -117.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:12,309 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:53:12,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:12,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.65 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:12,312 INFO L168 Benchmark]: Boogie Preprocessor took 81.01 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. [2019-11-15 23:53:12,313 INFO L168 Benchmark]: RCFGBuilder took 594.99 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:12,313 INFO L168 Benchmark]: TraceAbstraction took 371.05 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:12,314 INFO L168 Benchmark]: Witness Printer took 5.52 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. [2019-11-15 23:53:12,324 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.65 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.01 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 594.99 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 371.05 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.52 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. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 133]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 119. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=1] [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=1] [L133] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L133] __VERIFIER_error() VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2019-11-15 23:53:14,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:53:14,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:53:14,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:53:14,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:53:14,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:53:14,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:53:14,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:53:14,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:53:14,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:53:14,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:53:14,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:53:14,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:53:14,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:53:14,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:53:14,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:53:14,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:53:14,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:53:14,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:53:14,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:53:14,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:53:14,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:53:14,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:53:14,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:53:14,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:53:14,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:53:14,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:53:14,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:53:14,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:53:14,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:53:14,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:53:14,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:53:14,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:53:14,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:53:14,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:53:14,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:53:14,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:53:14,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:53:14,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:53:14,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:53:14,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:53:14,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:53:14,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:53:14,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:53:14,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:53:14,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:53:14,549 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:53:14,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:53:14,550 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:53:14,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:53:14,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:53:14,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:53:14,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:53:14,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:53:14,552 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:53:14,552 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:53:14,552 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:53:14,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:53:14,553 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:53:14,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:53:14,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:53:14,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:53:14,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:53:14,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:53:14,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:53:14,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:53:14,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:53:14,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:53:14,556 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:53:14,556 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:53:14,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:53:14,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:53:14,557 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/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-11-15 23:53:14,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:53:14,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:53:14,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:53:14,630 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:53:14,631 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:53:14,632 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-15 23:53:14,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/b2a486342/4644ad2fc932401b91a2542ab3768329/FLAGe527d8865 [2019-11-15 23:53:15,087 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:53:15,089 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-11-15 23:53:15,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/b2a486342/4644ad2fc932401b91a2542ab3768329/FLAGe527d8865 [2019-11-15 23:53:15,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/bin/uautomizer/data/b2a486342/4644ad2fc932401b91a2542ab3768329 [2019-11-15 23:53:15,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:53:15,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:53:15,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:53:15,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:53:15,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:53:15,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb318f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15, skipping insertion in model container [2019-11-15 23:53:15,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,493 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:53:15,513 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:53:15,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:53:15,687 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:53:15,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:53:15,743 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:53:15,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15 WrapperNode [2019-11-15 23:53:15,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:53:15,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:53:15,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:53:15,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:53:15,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:53:15,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:53:15,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:53:15,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:53:15,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... [2019-11-15 23:53:15,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:53:15,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:53:15,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:53:15,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:53:15,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 [2019-11-15 23:53:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:53:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-15 23:53:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:53:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:53:15,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:53:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-15 23:53:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:53:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:53:16,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:53:16,497 INFO L284 CfgBuilder]: Removed 26 assume(true) statements. [2019-11-15 23:53:16,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:16 BoogieIcfgContainer [2019-11-15 23:53:16,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:53:16,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:53:16,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:53:16,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:53:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:53:15" (1/3) ... [2019-11-15 23:53:16,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3b4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:53:16, skipping insertion in model container [2019-11-15 23:53:16,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:15" (2/3) ... [2019-11-15 23:53:16,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3b4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:53:16, skipping insertion in model container [2019-11-15 23:53:16,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:16" (3/3) ... [2019-11-15 23:53:16,509 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-11-15 23:53:16,518 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:53:16,526 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:53:16,534 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:53:16,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:53:16,552 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:53:16,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:53:16,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:53:16,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:53:16,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:53:16,553 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:53:16,553 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:53:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 23:53:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 23:53:16,567 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:53:16,568 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 23:53:16,570 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:53:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:53:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-11-15 23:53:16,582 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:53:16,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772512446] [2019-11-15 23:53:16,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 [2019-11-15 23:53:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:53:16,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 23:53:16,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:53:16,919 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2019-11-15 23:53:16,920 INFO L341 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-11-15 23:53:16,920 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-11-15 23:53:16,922 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:17,118 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-11-15 23:53:17,119 INFO L567 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-11-15 23:53:17,144 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-11-15 23:53:17,144 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:17,182 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:17,184 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:17,184 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-11-15 23:53:17,363 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:17,363 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-11-15 23:53:17,365 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:17,589 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-11-15 23:53:17,589 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:17,900 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-11-15 23:53:17,900 INFO L341 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-11-15 23:53:17,901 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-11-15 23:53:17,903 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:18,115 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-11-15 23:53:18,115 INFO L567 ElimStorePlain]: treesize reduction 44, result has 74.0 percent of original size [2019-11-15 23:53:18,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:18,122 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:18,123 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:157, output treesize:112 [2019-11-15 23:53:18,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:18,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:18,196 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:18,232 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 52 [2019-11-15 23:53:18,233 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:18,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:18,285 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:18,286 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 121 treesize of output 93 [2019-11-15 23:53:18,287 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:18,351 INFO L567 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-11-15 23:53:18,352 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:53:18,352 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:256, output treesize:25 [2019-11-15 23:53:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:53:18,376 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:53:25,826 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-15 23:53:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:53:25,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772512446] [2019-11-15 23:53:25,842 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:53:25,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-15 23:53:25,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008699450] [2019-11-15 23:53:25,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:53:25,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:53:25,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:53:25,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=37, Unknown=3, NotChecked=0, Total=56 [2019-11-15 23:53:25,862 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 8 states. [2019-11-15 23:53:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:53:26,406 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-11-15 23:53:26,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:53:26,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2019-11-15 23:53:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:53:26,415 INFO L225 Difference]: With dead ends: 57 [2019-11-15 23:53:26,416 INFO L226 Difference]: Without dead ends: 25 [2019-11-15 23:53:26,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=22, Invalid=47, Unknown=3, NotChecked=0, Total=72 [2019-11-15 23:53:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-15 23:53:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-15 23:53:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-15 23:53:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-11-15 23:53:26,443 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 6 [2019-11-15 23:53:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:53:26,444 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-11-15 23:53:26,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:53:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-11-15 23:53:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:53:26,445 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:53:26,445 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:53:26,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:53:26,646 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:53:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:53:26,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2061469933, now seen corresponding path program 1 times [2019-11-15 23:53:26,647 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:53:26,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295906464] [2019-11-15 23:53:26,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 [2019-11-15 23:53:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:53:26,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-15 23:53:26,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:53:26,913 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-11-15 23:53:26,915 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:26,918 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:26,918 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:53:26,921 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:26,921 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:53:26,921 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-11-15 23:53:27,003 INFO L341 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-11-15 23:53:27,003 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-11-15 23:53:27,004 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:27,114 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-11-15 23:53:27,115 INFO L567 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-11-15 23:53:27,130 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-11-15 23:53:27,131 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:27,150 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:27,151 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:27,152 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-11-15 23:53:27,301 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:27,302 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-11-15 23:53:27,303 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:27,507 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-11-15 23:53:27,507 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:27,712 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-11-15 23:53:27,712 INFO L341 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-11-15 23:53:27,712 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-11-15 23:53:27,714 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:27,961 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-11-15 23:53:27,961 INFO L567 ElimStorePlain]: treesize reduction 44, result has 74.0 percent of original size [2019-11-15 23:53:27,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:27,964 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:27,964 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:157, output treesize:112 [2019-11-15 23:53:27,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:28,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:28,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:28,103 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 54 [2019-11-15 23:53:28,104 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:28,116 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:28,144 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:28,144 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 123 treesize of output 95 [2019-11-15 23:53:28,145 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:28,186 INFO L567 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-11-15 23:53:28,186 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:53:28,187 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:260, output treesize:25 [2019-11-15 23:53:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:53:28,205 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:53:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:53:33,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295906464] [2019-11-15 23:53:33,488 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:53:33,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-15 23:53:33,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911339161] [2019-11-15 23:53:33,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:53:33,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:53:33,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:53:33,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2019-11-15 23:53:33,491 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 9 states. [2019-11-15 23:53:34,153 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-15 23:53:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:53:34,473 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-11-15 23:53:34,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:53:34,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-15 23:53:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:53:34,475 INFO L225 Difference]: With dead ends: 25 [2019-11-15 23:53:34,476 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 23:53:34,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2019-11-15 23:53:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 23:53:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-15 23:53:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-15 23:53:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-15 23:53:34,482 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 11 [2019-11-15 23:53:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:53:34,483 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-15 23:53:34,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:53:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-15 23:53:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:53:34,484 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:53:34,484 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:53:34,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:53:34,688 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:53:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:53:34,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2079313263, now seen corresponding path program 1 times [2019-11-15 23:53:34,688 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:53:34,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446527414] [2019-11-15 23:53:34,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b5d5fd-13de-43db-b9ed-cb2820104492/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 [2019-11-15 23:53:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:53:34,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-15 23:53:34,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:53:35,075 INFO L341 Elim1Store]: treesize reduction 16, result has 70.9 percent of original size [2019-11-15 23:53:35,075 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 55 [2019-11-15 23:53:35,076 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:35,140 INFO L567 ElimStorePlain]: treesize reduction 36, result has 37.9 percent of original size [2019-11-15 23:53:35,140 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:35,140 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-15 23:53:35,308 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2019-11-15 23:53:35,308 INFO L341 Elim1Store]: treesize reduction 24, result has 77.4 percent of original size [2019-11-15 23:53:35,308 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 31 treesize of output 103 [2019-11-15 23:53:35,309 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:35,393 INFO L567 ElimStorePlain]: treesize reduction 50, result has 60.0 percent of original size [2019-11-15 23:53:35,398 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-11-15 23:53:35,401 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:35,403 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:35,403 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:53:35,419 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:35,420 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:35,420 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:85, output treesize:33 [2019-11-15 23:53:35,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:35,696 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-15 23:53:35,696 INFO L341 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-11-15 23:53:35,696 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-11-15 23:53:35,698 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:35,907 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-11-15 23:53:35,907 INFO L567 ElimStorePlain]: treesize reduction 50, result has 60.6 percent of original size [2019-11-15 23:53:35,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:35,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:35,953 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:35,954 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 48 [2019-11-15 23:53:35,955 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:36,048 INFO L567 ElimStorePlain]: treesize reduction 16, result has 83.5 percent of original size [2019-11-15 23:53:36,048 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:36,049 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:87, output treesize:81 [2019-11-15 23:53:36,163 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:36,198 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:36,199 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-11-15 23:53:36,200 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:36,401 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-11-15 23:53:36,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:36,515 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:36,516 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 94 treesize of output 157 [2019-11-15 23:53:36,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:36,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:36,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:36,518 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:36,680 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-11-15 23:53:36,681 INFO L567 ElimStorePlain]: treesize reduction 60, result has 64.5 percent of original size [2019-11-15 23:53:36,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:36,686 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:53:36,686 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:145, output treesize:114 [2019-11-15 23:53:36,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:36,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:53:36,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:36,780 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 54 [2019-11-15 23:53:36,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:36,785 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:53:36,845 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:53:36,845 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 117 treesize of output 97 [2019-11-15 23:53:36,846 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:53:36,886 INFO L567 ElimStorePlain]: treesize reduction 54, result has 40.7 percent of original size [2019-11-15 23:53:36,887 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:53:36,887 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:228, output treesize:25 [2019-11-15 23:53:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:53:36,909 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:53:48,432 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 66 [2019-11-15 23:53:48,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:53:48,872 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 23:53:48,876 INFO L168 Benchmark]: Toolchain (without parser) took 33397.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.9 MB). Free memory was 947.0 MB in the beginning and 956.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 204.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:48,876 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:53:48,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.69 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 930.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:48,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 930.9 MB in the beginning and 1.1 GB in the end (delta: -218.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:48,877 INFO L168 Benchmark]: Boogie Preprocessor took 42.36 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. [2019-11-15 23:53:48,878 INFO L168 Benchmark]: RCFGBuilder took 592.18 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: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:48,878 INFO L168 Benchmark]: TraceAbstraction took 32375.41 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 154.4 MB). Peak memory consumption was 208.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:48,881 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.69 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 930.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 118.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 930.9 MB in the beginning and 1.1 GB in the end (delta: -218.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.36 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 592.18 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: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 32375.41 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 956.5 MB in the end (delta: 154.4 MB). Peak memory consumption was 208.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...