./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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 0.1.23-635dfa2 [2018-12-01 14:42:44,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 14:42:44,795 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 14:42:44,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 14:42:44,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 14:42:44,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 14:42:44,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 14:42:44,803 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 14:42:44,804 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 14:42:44,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 14:42:44,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 14:42:44,805 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 14:42:44,806 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 14:42:44,807 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 14:42:44,807 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 14:42:44,808 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 14:42:44,808 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 14:42:44,809 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 14:42:44,810 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 14:42:44,811 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 14:42:44,811 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 14:42:44,812 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 14:42:44,813 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 14:42:44,813 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 14:42:44,813 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 14:42:44,814 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 14:42:44,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 14:42:44,814 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 14:42:44,815 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 14:42:44,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 14:42:44,815 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 14:42:44,816 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 14:42:44,816 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 14:42:44,816 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 14:42:44,816 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 14:42:44,817 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 14:42:44,817 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 14:42:44,823 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 14:42:44,823 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 14:42:44,824 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 14:42:44,824 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 14:42:44,824 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 14:42:44,825 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 14:42:44,825 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 14:42:44,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 14:42:44,825 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 14:42:44,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 14:42:44,825 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 14:42:44,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 14:42:44,826 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 14:42:44,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 14:42:44,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 14:42:44,826 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 14:42:44,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 14:42:44,826 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 14:42:44,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 14:42:44,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 14:42:44,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 14:42:44,827 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 14:42:44,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 14:42:44,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 14:42:44,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 14:42:44,828 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 14:42:44,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 14:42:44,828 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 14:42:44,828 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 14:42:44,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 14:42:44,828 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_73ead589-a136-46f3-b89b-902f93fcfd69/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 [2018-12-01 14:42:44,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 14:42:44,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 14:42:44,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 14:42:44,862 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 14:42:44,862 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 14:42:44,862 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-12-01 14:42:44,896 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/63fe50a35/41cd4134a739432385ca44c5276401bd/FLAG59a7d73bd [2018-12-01 14:42:45,182 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 14:42:45,182 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-12-01 14:42:45,186 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/63fe50a35/41cd4134a739432385ca44c5276401bd/FLAG59a7d73bd [2018-12-01 14:42:45,195 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/63fe50a35/41cd4134a739432385ca44c5276401bd [2018-12-01 14:42:45,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 14:42:45,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 14:42:45,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 14:42:45,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 14:42:45,201 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 14:42:45,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343f3083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45, skipping insertion in model container [2018-12-01 14:42:45,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 14:42:45,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 14:42:45,306 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 14:42:45,308 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 14:42:45,317 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 14:42:45,326 INFO L195 MainTranslator]: Completed translation [2018-12-01 14:42:45,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45 WrapperNode [2018-12-01 14:42:45,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 14:42:45,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 14:42:45,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 14:42:45,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 14:42:45,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 14:42:45,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 14:42:45,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 14:42:45,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 14:42:45,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... [2018-12-01 14:42:45,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 14:42:45,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 14:42:45,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 14:42:45,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 14:42:45,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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 [2018-12-01 14:42:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 14:42:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 14:42:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 14:42:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 14:42:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 14:42:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 14:42:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 14:42:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 14:42:45,506 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 14:42:45,507 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 14:42:45,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:42:45 BoogieIcfgContainer [2018-12-01 14:42:45,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 14:42:45,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 14:42:45,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 14:42:45,509 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 14:42:45,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:42:45" (1/3) ... [2018-12-01 14:42:45,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cf7fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:42:45, skipping insertion in model container [2018-12-01 14:42:45,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:45" (2/3) ... [2018-12-01 14:42:45,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cf7fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:42:45, skipping insertion in model container [2018-12-01 14:42:45,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:42:45" (3/3) ... [2018-12-01 14:42:45,511 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-12-01 14:42:45,517 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 14:42:45,521 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 14:42:45,532 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 14:42:45,551 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 14:42:45,551 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 14:42:45,551 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 14:42:45,552 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 14:42:45,552 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 14:42:45,552 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 14:42:45,552 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 14:42:45,552 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 14:42:45,552 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 14:42:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-01 14:42:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 14:42:45,570 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 14:42:45,570 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 14:42:45,571 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 14:42:45,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:42:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash -722424895, now seen corresponding path program 1 times [2018-12-01 14:42:45,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:42:45,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:42:45,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:42:45,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:42:45,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:42:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 14:42:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 14:42:45,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 14:42:45,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 14:42:45,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 14:42:45,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 14:42:45,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 14:42:45,657 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-01 14:42:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 14:42:45,669 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-12-01 14:42:45,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 14:42:45,670 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-01 14:42:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 14:42:45,674 INFO L225 Difference]: With dead ends: 31 [2018-12-01 14:42:45,674 INFO L226 Difference]: Without dead ends: 12 [2018-12-01 14:42:45,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 14:42:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-01 14:42:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-01 14:42:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 14:42:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-01 14:42:45,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-01 14:42:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 14:42:45,696 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-01 14:42:45,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 14:42:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-01 14:42:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 14:42:45,697 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 14:42:45,697 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 14:42:45,697 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 14:42:45,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:42:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1142459876, now seen corresponding path program 1 times [2018-12-01 14:42:45,698 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 14:42:45,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 14:42:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:42:45,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:42:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 14:42:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:42:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:42:45,723 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 14:42:45,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:42:45 BoogieIcfgContainer [2018-12-01 14:42:45,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 14:42:45,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 14:42:45,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 14:42:45,737 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 14:42:45,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:42:45" (3/4) ... [2018-12-01 14:42:45,740 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 14:42:45,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 14:42:45,740 INFO L168 Benchmark]: Toolchain (without parser) took 542.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -139.6 MB). Peak memory consumption was 393.2 kB. Max. memory is 11.5 GB. [2018-12-01 14:42:45,741 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 14:42:45,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.48 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:45,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.23 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 14:42:45,742 INFO L168 Benchmark]: Boogie Preprocessor took 45.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -194.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:45,742 INFO L168 Benchmark]: RCFGBuilder took 122.34 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:45,743 INFO L168 Benchmark]: TraceAbstraction took 229.55 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:45,743 INFO L168 Benchmark]: Witness Printer took 2.64 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. [2018-12-01 14:42:45,745 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 127.48 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.23 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -194.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 122.34 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 229.55 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.64 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 someBinaryFLOATComparisonOperation at line 32, 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, 19 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 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=19occurred 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, 21 NumberOfCodeBlocks, 21 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 0.1.23-635dfa2 [2018-12-01 14:42:47,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 14:42:47,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 14:42:47,093 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 14:42:47,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 14:42:47,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 14:42:47,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 14:42:47,095 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 14:42:47,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 14:42:47,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 14:42:47,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 14:42:47,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 14:42:47,097 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 14:42:47,098 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 14:42:47,098 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 14:42:47,099 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 14:42:47,099 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 14:42:47,100 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 14:42:47,101 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 14:42:47,101 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 14:42:47,102 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 14:42:47,102 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 14:42:47,104 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 14:42:47,104 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 14:42:47,104 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 14:42:47,104 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 14:42:47,105 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 14:42:47,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 14:42:47,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 14:42:47,106 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 14:42:47,106 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 14:42:47,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 14:42:47,107 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 14:42:47,107 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 14:42:47,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 14:42:47,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 14:42:47,108 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 14:42:47,115 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 14:42:47,115 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 14:42:47,115 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 14:42:47,115 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 14:42:47,116 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 14:42:47,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 14:42:47,116 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 14:42:47,117 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 14:42:47,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 14:42:47,117 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 14:42:47,118 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 14:42:47,118 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 14:42:47,118 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 14:42:47,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 14:42:47,118 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 14:42:47,118 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 14:42:47,118 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_73ead589-a136-46f3-b89b-902f93fcfd69/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 [2018-12-01 14:42:47,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 14:42:47,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 14:42:47,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 14:42:47,150 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 14:42:47,151 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 14:42:47,151 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-12-01 14:42:47,197 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/4c3c22c0a/e893da8c083c4809a5d0ff364ac322f2/FLAGc637fbef5 [2018-12-01 14:42:47,590 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 14:42:47,590 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-12-01 14:42:47,593 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/4c3c22c0a/e893da8c083c4809a5d0ff364ac322f2/FLAGc637fbef5 [2018-12-01 14:42:47,601 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/data/4c3c22c0a/e893da8c083c4809a5d0ff364ac322f2 [2018-12-01 14:42:47,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 14:42:47,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 14:42:47,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 14:42:47,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 14:42:47,607 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 14:42:47,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e9f969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47, skipping insertion in model container [2018-12-01 14:42:47,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 14:42:47,626 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 14:42:47,717 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 14:42:47,721 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 14:42:47,731 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 14:42:47,740 INFO L195 MainTranslator]: Completed translation [2018-12-01 14:42:47,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47 WrapperNode [2018-12-01 14:42:47,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 14:42:47,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 14:42:47,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 14:42:47,741 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 14:42:47,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 14:42:47,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 14:42:47,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 14:42:47,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 14:42:47,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... [2018-12-01 14:42:47,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 14:42:47,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 14:42:47,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 14:42:47,776 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 14:42:47,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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 [2018-12-01 14:42:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 14:42:47,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 14:42:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 14:42:47,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 14:42:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 14:42:47,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 14:42:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 14:42:47,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 14:42:50,405 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 14:42:50,405 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 14:42:50,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:42:50 BoogieIcfgContainer [2018-12-01 14:42:50,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 14:42:50,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 14:42:50,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 14:42:50,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 14:42:50,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:42:47" (1/3) ... [2018-12-01 14:42:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13815b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:42:50, skipping insertion in model container [2018-12-01 14:42:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:42:47" (2/3) ... [2018-12-01 14:42:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13815b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:42:50, skipping insertion in model container [2018-12-01 14:42:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:42:50" (3/3) ... [2018-12-01 14:42:50,410 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-12-01 14:42:50,416 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 14:42:50,421 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 14:42:50,430 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 14:42:50,446 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 14:42:50,447 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 14:42:50,447 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 14:42:50,447 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 14:42:50,447 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 14:42:50,447 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 14:42:50,447 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 14:42:50,447 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 14:42:50,447 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 14:42:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-01 14:42:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 14:42:50,460 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 14:42:50,460 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 14:42:50,461 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 14:42:50,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:42:50,464 INFO L82 PathProgramCache]: Analyzing trace with hash -722424895, now seen corresponding path program 1 times [2018-12-01 14:42:50,467 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 14:42:50,467 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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 [2018-12-01 14:42:50,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:42:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 14:42:50,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 14:42:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 14:42:50,699 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 14:42:50,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 14:42:50,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 14:42:50,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 14:42:50,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 14:42:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 14:42:50,721 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-01 14:42:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 14:42:50,732 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-12-01 14:42:50,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 14:42:50,733 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-01 14:42:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 14:42:50,737 INFO L225 Difference]: With dead ends: 31 [2018-12-01 14:42:50,737 INFO L226 Difference]: Without dead ends: 12 [2018-12-01 14:42:50,739 INFO L631 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 [2018-12-01 14:42:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-01 14:42:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-01 14:42:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 14:42:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-01 14:42:50,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-01 14:42:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 14:42:50,759 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-01 14:42:50,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 14:42:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-01 14:42:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 14:42:50,759 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 14:42:50,760 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 14:42:50,760 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 14:42:50,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 14:42:50,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1142459876, now seen corresponding path program 1 times [2018-12-01 14:42:50,760 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 14:42:50,760 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/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 [2018-12-01 14:42:50,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 14:42:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:42:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 14:42:51,782 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 14:42:51,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:42:51 BoogieIcfgContainer [2018-12-01 14:42:51,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 14:42:51,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 14:42:51,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 14:42:51,800 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 14:42:51,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:42:50" (3/4) ... [2018-12-01 14:42:51,802 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 14:42:51,826 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_73ead589-a136-46f3-b89b-902f93fcfd69/bin-2019/uautomizer/witness.graphml [2018-12-01 14:42:51,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 14:42:51,826 INFO L168 Benchmark]: Toolchain (without parser) took 4223.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -133.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:51,827 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-01 14:42:51,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.79 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:51,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.90 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. [2018-12-01 14:42:51,828 INFO L168 Benchmark]: Boogie Preprocessor took 18.60 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. [2018-12-01 14:42:51,828 INFO L168 Benchmark]: RCFGBuilder took 2630.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:51,829 INFO L168 Benchmark]: TraceAbstraction took 1393.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2018-12-01 14:42:51,829 INFO L168 Benchmark]: Witness Printer took 26.17 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. [2018-12-01 14:42:51,830 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 135.79 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.90 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 18.60 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 2630.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1393.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. * Witness Printer took 26.17 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: - 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, 19 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 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=19occurred 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, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 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...