./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b .......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 03:27:02,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 03:27:02,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 03:27:02,284 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 03:27:02,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 03:27:02,285 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 03:27:02,286 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 03:27:02,286 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 03:27:02,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 03:27:02,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 03:27:02,288 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 03:27:02,288 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 03:27:02,289 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 03:27:02,289 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 03:27:02,290 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 03:27:02,290 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 03:27:02,290 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 03:27:02,291 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 03:27:02,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 03:27:02,293 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 03:27:02,293 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 03:27:02,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 03:27:02,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 03:27:02,295 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 03:27:02,295 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 03:27:02,296 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 03:27:02,296 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 03:27:02,297 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 03:27:02,297 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 03:27:02,298 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 03:27:02,298 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 03:27:02,298 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 03:27:02,298 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 03:27:02,298 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 03:27:02,299 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 03:27:02,299 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 03:27:02,299 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 03:27:02,306 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 03:27:02,306 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 03:27:02,307 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 03:27:02,307 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 03:27:02,307 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 03:27:02,308 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 03:27:02,308 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 03:27:02,308 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 03:27:02,308 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 03:27:02,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 03:27:02,308 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 03:27:02,308 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 03:27:02,309 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 03:27:02,309 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 03:27:02,310 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 03:27:02,310 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 03:27:02,311 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 03:27:02,311 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 03:27:02,311 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-12-09 03:27:02,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 03:27:02,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 03:27:02,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 03:27:02,338 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 03:27:02,338 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 03:27:02,339 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-12-09 03:27:02,372 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/c9f3b7b8d/3cca7db8069a4a9fa349b0053fb0b3e1/FLAG9b6bf1398 [2018-12-09 03:27:02,777 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 03:27:02,777 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-12-09 03:27:02,780 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/c9f3b7b8d/3cca7db8069a4a9fa349b0053fb0b3e1/FLAG9b6bf1398 [2018-12-09 03:27:02,789 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/c9f3b7b8d/3cca7db8069a4a9fa349b0053fb0b3e1 [2018-12-09 03:27:02,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 03:27:02,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 03:27:02,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 03:27:02,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 03:27:02,794 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 03:27:02,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fe521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02, skipping insertion in model container [2018-12-09 03:27:02,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 03:27:02,809 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 03:27:02,892 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:27:02,895 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 03:27:02,904 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:27:02,912 INFO L195 MainTranslator]: Completed translation [2018-12-09 03:27:02,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02 WrapperNode [2018-12-09 03:27:02,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 03:27:02,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 03:27:02,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 03:27:02,913 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 03:27:02,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 03:27:02,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 03:27:02,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 03:27:02,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 03:27:02,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... [2018-12-09 03:27:02,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 03:27:02,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 03:27:02,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 03:27:02,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 03:27:02,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 [2018-12-09 03:27:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 03:27:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 03:27:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 03:27:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 03:27:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 03:27:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 03:27:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 03:27:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 03:27:03,074 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 03:27:03,074 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 03:27:03,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:03 BoogieIcfgContainer [2018-12-09 03:27:03,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 03:27:03,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 03:27:03,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 03:27:03,076 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 03:27:03,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:27:02" (1/3) ... [2018-12-09 03:27:03,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f59c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:03, skipping insertion in model container [2018-12-09 03:27:03,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:02" (2/3) ... [2018-12-09 03:27:03,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f59c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:03, skipping insertion in model container [2018-12-09 03:27:03,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:03" (3/3) ... [2018-12-09 03:27:03,078 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-12-09 03:27:03,083 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 03:27:03,087 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 03:27:03,095 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 03:27:03,111 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 03:27:03,112 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 03:27:03,112 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 03:27:03,112 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 03:27:03,112 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 03:27:03,112 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 03:27:03,112 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 03:27:03,112 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 03:27:03,112 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 03:27:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 03:27:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 03:27:03,125 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:27:03,125 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:27:03,127 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:27:03,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:27:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 03:27:03,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 03:27:03,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 03:27:03,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:27:03,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:27:03,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:27:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 03:27:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 03:27:03,196 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 03:27:03,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:27:03 BoogieIcfgContainer [2018-12-09 03:27:03,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 03:27:03,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 03:27:03,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 03:27:03,215 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 03:27:03,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:03" (3/4) ... [2018-12-09 03:27:03,218 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 03:27:03,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 03:27:03,218 INFO L168 Benchmark]: Toolchain (without parser) took 427.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 959.9 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:27:03,219 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:27:03,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.48 ms. Allocated memory is still 1.0 GB. Free memory was 959.9 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 03:27:03,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.87 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:27:03,220 INFO L168 Benchmark]: Boogie Preprocessor took 45.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.1 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-09 03:27:03,221 INFO L168 Benchmark]: RCFGBuilder took 103.79 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-12-09 03:27:03,221 INFO L168 Benchmark]: TraceAbstraction took 139.78 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-12-09 03:27:03,221 INFO L168 Benchmark]: Witness Printer took 3.33 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. [2018-12-09 03:27:03,223 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.48 ms. Allocated memory is still 1.0 GB. Free memory was 959.9 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.87 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.1 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 103.79 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 139.78 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.33 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 18, overapproximation of someBinaryDOUBLEComparisonOperation at line 18. Possible FailurePath: [L6] float x, y, z; [L8] x = 1.f [L9] y = 1e7 [L10] z = 42.f VAL [x=1, y=10000000, z=42] [L12] COND FALSE !(x < y) VAL [x=1, y=10000000, z=42] [L18] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 03:27:04,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 03:27:04,477 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 03:27:04,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 03:27:04,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 03:27:04,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 03:27:04,485 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 03:27:04,485 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 03:27:04,486 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 03:27:04,486 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 03:27:04,487 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 03:27:04,487 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 03:27:04,487 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 03:27:04,488 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 03:27:04,488 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 03:27:04,489 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 03:27:04,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 03:27:04,490 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 03:27:04,491 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 03:27:04,492 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 03:27:04,493 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 03:27:04,494 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 03:27:04,495 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 03:27:04,496 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 03:27:04,496 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 03:27:04,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 03:27:04,497 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 03:27:04,497 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 03:27:04,497 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 03:27:04,498 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 03:27:04,498 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 03:27:04,498 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 03:27:04,499 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 03:27:04,499 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 03:27:04,499 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 03:27:04,499 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 03:27:04,500 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 03:27:04,509 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 03:27:04,509 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 03:27:04,510 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 03:27:04,510 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 03:27:04,510 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 03:27:04,511 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 03:27:04,511 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 03:27:04,511 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 03:27:04,511 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 03:27:04,511 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 03:27:04,511 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 03:27:04,512 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 03:27:04,512 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 03:27:04,512 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 03:27:04,512 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 03:27:04,512 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 03:27:04,512 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 03:27:04,513 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 03:27:04,513 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 03:27:04,513 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 03:27:04,513 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 03:27:04,513 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 03:27:04,513 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 03:27:04,513 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 03:27:04,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 03:27:04,514 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 03:27:04,514 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 03:27:04,514 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 03:27:04,514 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 03:27:04,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 03:27:04,515 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 03:27:04,515 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 03:27:04,515 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-12-09 03:27:04,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 03:27:04,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 03:27:04,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 03:27:04,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 03:27:04,549 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 03:27:04,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-12-09 03:27:04,583 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/fb3b75988/59cc40d00a2844d58f311947462ea14d/FLAG8ce31cb1d [2018-12-09 03:27:04,984 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 03:27:04,984 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-12-09 03:27:04,987 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/fb3b75988/59cc40d00a2844d58f311947462ea14d/FLAG8ce31cb1d [2018-12-09 03:27:04,995 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/data/fb3b75988/59cc40d00a2844d58f311947462ea14d [2018-12-09 03:27:04,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 03:27:04,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 03:27:04,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 03:27:04,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 03:27:05,000 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 03:27:05,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:04" (1/1) ... [2018-12-09 03:27:05,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a08fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05, skipping insertion in model container [2018-12-09 03:27:05,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:04" (1/1) ... [2018-12-09 03:27:05,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 03:27:05,015 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 03:27:05,110 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:27:05,115 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 03:27:05,124 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:27:05,133 INFO L195 MainTranslator]: Completed translation [2018-12-09 03:27:05,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05 WrapperNode [2018-12-09 03:27:05,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 03:27:05,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 03:27:05,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 03:27:05,134 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 03:27:05,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 03:27:05,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 03:27:05,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 03:27:05,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 03:27:05,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... [2018-12-09 03:27:05,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 03:27:05,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 03:27:05,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 03:27:05,163 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 03:27:05,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 [2018-12-09 03:27:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 03:27:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 03:27:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 03:27:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 03:27:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 03:27:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 03:27:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 03:27:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 03:27:05,736 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 03:27:05,736 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 03:27:05,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:05 BoogieIcfgContainer [2018-12-09 03:27:05,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 03:27:05,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 03:27:05,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 03:27:05,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 03:27:05,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:27:04" (1/3) ... [2018-12-09 03:27:05,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f37df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:05, skipping insertion in model container [2018-12-09 03:27:05,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:05" (2/3) ... [2018-12-09 03:27:05,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f37df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:05, skipping insertion in model container [2018-12-09 03:27:05,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:05" (3/3) ... [2018-12-09 03:27:05,741 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-12-09 03:27:05,746 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 03:27:05,750 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 03:27:05,758 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 03:27:05,774 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 03:27:05,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 03:27:05,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 03:27:05,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 03:27:05,775 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 03:27:05,775 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 03:27:05,775 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 03:27:05,775 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 03:27:05,775 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 03:27:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 03:27:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 03:27:05,788 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:27:05,788 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:27:05,790 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:27:05,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:27:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 03:27:05,795 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 03:27:05,795 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 [2018-12-09 03:27:05,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:27:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:27:05,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 03:27:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:27:05,857 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 03:27:05,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:27:05,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 03:27:05,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 03:27:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 03:27:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 03:27:05,878 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-09 03:27:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:27:06,113 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-09 03:27:06,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 03:27:06,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 03:27:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:27:06,118 INFO L225 Difference]: With dead ends: 31 [2018-12-09 03:27:06,118 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 03:27:06,120 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 03:27:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 03:27:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 03:27:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 03:27:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 03:27:06,140 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-09 03:27:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:27:06,140 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 03:27:06,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 03:27:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 03:27:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 03:27:06,141 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:27:06,141 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:27:06,141 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:27:06,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:27:06,141 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-09 03:27:06,141 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 03:27:06,141 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 [2018-12-09 03:27:06,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:27:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:27:06,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 03:27:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:27:06,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 03:27:09,474 WARN L180 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-12-09 03:27:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:27:09,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 03:27:09,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 03:27:09,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 03:27:09,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 03:27:09,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2018-12-09 03:27:09,491 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-12-09 03:27:16,487 WARN L180 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 10 [2018-12-09 03:27:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:27:19,107 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-09 03:27:19,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 03:27:19,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-09 03:27:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:27:19,113 INFO L225 Difference]: With dead ends: 20 [2018-12-09 03:27:19,113 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 03:27:19,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2018-12-09 03:27:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 03:27:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 03:27:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 03:27:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-09 03:27:19,118 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-12-09 03:27:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:27:19,118 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-09 03:27:19,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 03:27:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-09 03:27:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 03:27:19,119 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:27:19,119 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:27:19,119 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:27:19,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:27:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-12-09 03:27:19,120 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 03:27:19,120 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/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 [2018-12-09 03:27:19,123 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 03:27:19,352 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 03:27:19,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 03:27:19,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 03:27:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:27:19,459 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 03:27:20,503 WARN L180 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-12-09 03:27:27,037 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 03:27:40,017 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 13 [2018-12-09 03:27:42,819 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2018-12-09 03:28:24,761 WARN L180 SmtUtils]: Spent 8.91 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 03:28:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 3 times theorem prover too weak. 0 trivial. 4 not checked. [2018-12-09 03:28:24,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 03:28:24,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-12-09 03:28:24,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 03:28:24,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 03:28:24,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=150, Unknown=10, NotChecked=26, Total=240 [2018-12-09 03:28:24,778 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 16 states. [2018-12-09 03:29:22,931 WARN L180 SmtUtils]: Spent 21.44 s on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-12-09 03:29:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:29:41,587 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-09 03:29:41,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 03:29:41,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2018-12-09 03:29:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:29:41,587 INFO L225 Difference]: With dead ends: 19 [2018-12-09 03:29:41,587 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 03:29:41,588 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 122.6s TimeCoverageRelationStatistics Valid=76, Invalid=220, Unknown=14, NotChecked=32, Total=342 [2018-12-09 03:29:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 03:29:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 03:29:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 03:29:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 03:29:41,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-12-09 03:29:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:29:41,589 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 03:29:41,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 03:29:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 03:29:41,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 03:29:41,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 03:29:44,549 WARN L180 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-12-09 03:29:54,189 WARN L180 SmtUtils]: Spent 9.64 s on a formula simplification. DAG size of input: 43 DAG size of output: 12 [2018-12-09 03:29:54,190 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 03:29:54,190 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 03:29:54,190 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 03:29:54,191 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 03:29:54,191 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 03:29:54,191 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 03:29:54,191 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 20) the Hoare annotation is: true [2018-12-09 03:29:54,191 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 20) no Hoare annotation was computed. [2018-12-09 03:29:54,191 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 03:29:54,191 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 20) no Hoare annotation was computed. [2018-12-09 03:29:54,191 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven main_~z~0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24))) [2018-12-09 03:29:54,191 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven main_~z~0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24))) [2018-12-09 03:29:54,191 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-12-09 03:29:54,191 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-12-09 03:29:54,192 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-12-09 03:29:54,192 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-12-09 03:29:54,192 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-12-09 03:29:54,192 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-12-09 03:29:54,196 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,197 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,197 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,197 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,199 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,200 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,200 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,200 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:29:54 BoogieIcfgContainer [2018-12-09 03:29:54,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 03:29:54,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 03:29:54,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 03:29:54,202 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 03:29:54,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:05" (3/4) ... [2018-12-09 03:29:54,204 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 03:29:54,208 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 03:29:54,208 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 03:29:54,208 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 03:29:54,210 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-09 03:29:54,210 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 03:29:54,211 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 03:29:54,232 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6381cd71-ced1-4193-803c-582209f95afe/bin-2019/uautomizer/witness.graphml [2018-12-09 03:29:54,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 03:29:54,233 INFO L168 Benchmark]: Toolchain (without parser) took 169235.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 944.7 MB in the beginning and 976.0 MB in the end (delta: -31.2 MB). Peak memory consumption was 100.4 MB. Max. memory is 11.5 GB. [2018-12-09 03:29:54,233 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:29:54,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.20 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-09 03:29:54,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.58 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:29:54,234 INFO L168 Benchmark]: Boogie Preprocessor took 15.82 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 03:29:54,234 INFO L168 Benchmark]: RCFGBuilder took 573.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-09 03:29:54,235 INFO L168 Benchmark]: TraceAbstraction took 168464.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.0 MB in the end (delta: 125.6 MB). Peak memory consumption was 125.6 MB. Max. memory is 11.5 GB. [2018-12-09 03:29:54,235 INFO L168 Benchmark]: Witness Printer took 30.89 ms. Allocated memory is still 1.2 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:29:54,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.20 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.58 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.82 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 573.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 168464.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.0 MB in the end (delta: 125.6 MB). Peak memory consumption was 125.6 MB. Max. memory is 11.5 GB. * Witness Printer took 30.89 ms. Allocated memory is still 1.2 GB. Free memory is still 976.0 MB. 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: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant [2018-12-09 03:29:54,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,240 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,240 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,240 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 03:29:54,240 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~fp.add~FLOAT(~roundNearestTiesToEven, z, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0))), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E8)) && ~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 168.4s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 86.6s AutomataDifference, 0.0s DeadEndRemovalTime, 12.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 7 SDslu, 72 SDs, 0 SdLazy, 48 SolverSat, 7 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 23.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 131.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 37 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 159 FormulaSimplificationTreeSizeReductionInter, 12.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 68.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 4691 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 3/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...