./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 .................................................................................................................................................................................................................................................................................... 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_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-09 22:57:43,680 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 22:57:43,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 22:57:43,688 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 22:57:43,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 22:57:43,689 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 22:57:43,689 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 22:57:43,691 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 22:57:43,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 22:57:43,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 22:57:43,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 22:57:43,693 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 22:57:43,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 22:57:43,694 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 22:57:43,695 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 22:57:43,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 22:57:43,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 22:57:43,697 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 22:57:43,698 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 22:57:43,699 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 22:57:43,700 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 22:57:43,701 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 22:57:43,702 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 22:57:43,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 22:57:43,703 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 22:57:43,703 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 22:57:43,704 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 22:57:43,705 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 22:57:43,705 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 22:57:43,706 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 22:57:43,706 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 22:57:43,707 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 22:57:43,707 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 22:57:43,707 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 22:57:43,708 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 22:57:43,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 22:57:43,708 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-09 22:57:43,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 22:57:43,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 22:57:43,719 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-09 22:57:43,719 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-09 22:57:43,719 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 22:57:43,719 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 22:57:43,719 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 22:57:43,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 22:57:43,720 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 22:57:43,720 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 22:57:43,720 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 22:57:43,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 22:57:43,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-09 22:57:43,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-09 22:57:43,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-09 22:57:43,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-09 22:57:43,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 22:57:43,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-09 22:57:43,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-09 22:57:43,722 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-09 22:57:43,722 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-09 22:57:43,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-09 22:57:43,722 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_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-09 22:57:43,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 22:57:43,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 22:57:43,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 22:57:43,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 22:57:43,754 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 22:57:43,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-09 22:57:43,790 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/76e717c57/0ff93fd792f2422d9abff4fa840a0295/FLAG134e79423 [2018-11-09 22:57:44,182 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 22:57:44,183 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-09 22:57:44,187 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/76e717c57/0ff93fd792f2422d9abff4fa840a0295/FLAG134e79423 [2018-11-09 22:57:44,197 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/76e717c57/0ff93fd792f2422d9abff4fa840a0295 [2018-11-09 22:57:44,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 22:57:44,200 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-09 22:57:44,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 22:57:44,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 22:57:44,203 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 22:57:44,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680a2912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44, skipping insertion in model container [2018-11-09 22:57:44,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 22:57:44,224 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 22:57:44,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:57:44,327 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 22:57:44,337 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:57:44,345 INFO L193 MainTranslator]: Completed translation [2018-11-09 22:57:44,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44 WrapperNode [2018-11-09 22:57:44,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 22:57:44,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 22:57:44,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 22:57:44,346 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 22:57:44,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... [2018-11-09 22:57:44,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 22:57:44,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 22:57:44,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 22:57:44,364 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 22:57:44,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 [2018-11-09 22:57:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-09 22:57:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 22:57:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-09 22:57:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-09 22:57:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-09 22:57:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 22:57:44,521 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 22:57:44,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:44 BoogieIcfgContainer [2018-11-09 22:57:44,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 22:57:44,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-09 22:57:44,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-09 22:57:44,525 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-09 22:57:44,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:57:44" (1/3) ... [2018-11-09 22:57:44,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a7fa61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:57:44, skipping insertion in model container [2018-11-09 22:57:44,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:44" (2/3) ... [2018-11-09 22:57:44,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a7fa61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:57:44, skipping insertion in model container [2018-11-09 22:57:44,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:44" (3/3) ... [2018-11-09 22:57:44,528 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-09 22:57:44,534 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-09 22:57:44,538 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-09 22:57:44,546 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-09 22:57:44,568 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 22:57:44,568 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-09 22:57:44,569 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-09 22:57:44,569 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-09 22:57:44,569 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 22:57:44,569 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 22:57:44,569 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-09 22:57:44,569 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 22:57:44,569 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-09 22:57:44,583 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-09 22:57:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-09 22:57:44,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:57:44,588 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:57:44,590 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-09 22:57:44,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:57:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-09 22:57:44,596 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:57:44,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:57:44,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:57:44,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:57:44,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:57:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:57:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:57:44,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 22:57:44,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-09 22:57:44,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-09 22:57:44,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-09 22:57:44,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-09 22:57:44,672 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-09 22:57:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 22:57:44,685 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-09 22:57:44,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-09 22:57:44,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-09 22:57:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-09 22:57:44,693 INFO L225 Difference]: With dead ends: 32 [2018-11-09 22:57:44,693 INFO L226 Difference]: Without dead ends: 13 [2018-11-09 22:57:44,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-09 22:57:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-09 22:57:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-09 22:57:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-09 22:57:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-09 22:57:44,719 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-09 22:57:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-09 22:57:44,719 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-09 22:57:44,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-09 22:57:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-09 22:57:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-09 22:57:44,720 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:57:44,720 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:57:44,721 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-09 22:57:44,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:57:44,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1142988599, now seen corresponding path program 1 times [2018-11-09 22:57:44,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 22:57:44,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 22:57:44,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:57:44,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:57:44,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 22:57:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:57:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:57:44,754 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-09 22:57:44,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:57:44 BoogieIcfgContainer [2018-11-09 22:57:44,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-09 22:57:44,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 22:57:44,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 22:57:44,769 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 22:57:44,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:44" (3/4) ... [2018-11-09 22:57:44,771 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-09 22:57:44,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 22:57:44,772 INFO L168 Benchmark]: Toolchain (without parser) took 572.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -135.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:57:44,773 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:57:44,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.30 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:44,774 INFO L168 Benchmark]: Boogie Preprocessor took 17.41 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:57:44,775 INFO L168 Benchmark]: RCFGBuilder took 157.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:44,775 INFO L168 Benchmark]: TraceAbstraction took 245.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:44,776 INFO L168 Benchmark]: Witness Printer took 3.03 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. [2018-11-09 22:57:44,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.30 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.41 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 157.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 245.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.03 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; VAL [count=1, exp=1, term=1, x=2] [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 VAL [count=2, temp=0, x=2] [L32] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.23-1dbac8b [2018-11-09 22:57:46,214 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 22:57:46,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 22:57:46,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 22:57:46,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 22:57:46,223 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 22:57:46,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 22:57:46,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 22:57:46,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 22:57:46,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 22:57:46,228 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 22:57:46,228 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 22:57:46,229 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 22:57:46,230 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 22:57:46,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 22:57:46,231 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 22:57:46,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 22:57:46,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 22:57:46,235 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 22:57:46,236 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 22:57:46,237 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 22:57:46,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 22:57:46,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 22:57:46,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 22:57:46,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 22:57:46,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 22:57:46,241 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 22:57:46,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 22:57:46,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 22:57:46,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 22:57:46,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 22:57:46,244 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 22:57:46,244 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 22:57:46,245 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 22:57:46,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 22:57:46,246 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 22:57:46,246 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-09 22:57:46,257 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 22:57:46,257 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 22:57:46,258 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-09 22:57:46,258 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-09 22:57:46,258 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 22:57:46,259 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 22:57:46,259 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 22:57:46,259 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 22:57:46,259 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 22:57:46,259 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 22:57:46,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 22:57:46,259 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 22:57:46,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-09 22:57:46,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-09 22:57:46,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-09 22:57:46,261 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-09 22:57:46,262 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_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-09 22:57:46,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 22:57:46,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 22:57:46,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 22:57:46,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 22:57:46,302 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 22:57:46,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-09 22:57:46,337 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/41f1a6e21/ec29123656614e60910b2c9db51b43f9/FLAG9fe11decd [2018-11-09 22:57:46,733 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 22:57:46,733 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-09 22:57:46,737 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/41f1a6e21/ec29123656614e60910b2c9db51b43f9/FLAG9fe11decd [2018-11-09 22:57:46,746 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/data/41f1a6e21/ec29123656614e60910b2c9db51b43f9 [2018-11-09 22:57:46,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 22:57:46,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-09 22:57:46,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 22:57:46,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 22:57:46,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 22:57:46,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e502643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46, skipping insertion in model container [2018-11-09 22:57:46,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 22:57:46,779 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 22:57:46,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:57:46,901 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 22:57:46,912 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 22:57:46,921 INFO L193 MainTranslator]: Completed translation [2018-11-09 22:57:46,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46 WrapperNode [2018-11-09 22:57:46,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 22:57:46,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 22:57:46,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 22:57:46,922 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 22:57:46,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... [2018-11-09 22:57:46,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 22:57:46,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 22:57:46,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 22:57:46,945 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 22:57:46,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 [2018-11-09 22:57:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-09 22:57:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 22:57:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-09 22:57:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-09 22:57:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-09 22:57:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-09 22:57:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-09 22:57:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-09 22:57:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-09 22:57:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-09 22:57:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-09 22:57:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 22:57:50,950 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 22:57:50,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:50 BoogieIcfgContainer [2018-11-09 22:57:50,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 22:57:50,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-09 22:57:50,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-09 22:57:50,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-09 22:57:50,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:57:46" (1/3) ... [2018-11-09 22:57:50,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b815a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:57:50, skipping insertion in model container [2018-11-09 22:57:50,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:57:46" (2/3) ... [2018-11-09 22:57:50,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b815a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:57:50, skipping insertion in model container [2018-11-09 22:57:50,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:50" (3/3) ... [2018-11-09 22:57:50,956 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-09 22:57:50,964 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-09 22:57:50,968 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-09 22:57:50,977 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-09 22:57:50,994 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 22:57:50,994 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-09 22:57:50,994 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-09 22:57:50,995 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-09 22:57:50,995 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 22:57:50,995 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 22:57:50,995 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-09 22:57:50,995 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 22:57:50,996 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-09 22:57:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-09 22:57:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-09 22:57:51,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:57:51,015 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:57:51,016 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-09 22:57:51,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:57:51,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-09 22:57:51,021 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-09 22:57:51,022 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 [2018-11-09 22:57:51,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:57:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 22:57:51,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-09 22:57:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 22:57:51,267 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-09 22:57:51,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-09 22:57:51,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-09 22:57:51,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-09 22:57:51,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-09 22:57:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-09 22:57:51,290 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-09 22:57:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-09 22:57:51,307 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-09 22:57:51,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-09 22:57:51,308 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-09 22:57:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-09 22:57:51,314 INFO L225 Difference]: With dead ends: 32 [2018-11-09 22:57:51,315 INFO L226 Difference]: Without dead ends: 13 [2018-11-09 22:57:51,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-09 22:57:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-09 22:57:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-09 22:57:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-09 22:57:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-09 22:57:51,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-09 22:57:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-09 22:57:51,341 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-09 22:57:51,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-09 22:57:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-09 22:57:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-09 22:57:51,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 22:57:51,342 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 22:57:51,342 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-09 22:57:51,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 22:57:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1142988599, now seen corresponding path program 1 times [2018-11-09 22:57:51,343 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-09 22:57:51,343 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/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 [2018-11-09 22:57:51,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 22:57:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:57:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 22:57:52,400 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-09 22:57:52,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:57:52 BoogieIcfgContainer [2018-11-09 22:57:52,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-09 22:57:52,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 22:57:52,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 22:57:52,415 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 22:57:52,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:57:50" (3/4) ... [2018-11-09 22:57:52,417 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-09 22:57:52,443 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_85b2b5c1-5b63-4b20-88cb-42e11a3031f6/bin-2019/uautomizer/witness.graphml [2018-11-09 22:57:52,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 22:57:52,444 INFO L168 Benchmark]: Toolchain (without parser) took 5695.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -99.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:52,445 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 22:57:52,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.51 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:52,446 INFO L168 Benchmark]: Boogie Preprocessor took 22.39 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:52,446 INFO L168 Benchmark]: RCFGBuilder took 4005.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:52,447 INFO L168 Benchmark]: TraceAbstraction took 1463.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:52,447 INFO L168 Benchmark]: Witness Printer took 28.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-11-09 22:57:52,450 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.51 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.39 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4005.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1463.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Witness Printer took 28.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; VAL [count=1, exp=1.0, result=-273.0666809082031, term=1.0, x=1.00732421875] [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 VAL [count=2, exp=2.00732421875, result=-273.0666809082031, temp=0, term=1.00732421875, x=1.00732421875] [L32] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...