./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.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_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 ........................................................................................................................................................................................................................................... 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_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/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 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 .................................................................................................................................................................................................................................. 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 [2018-12-08 09:01:50,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 09:01:50,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 09:01:50,335 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 09:01:50,336 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 09:01:50,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 09:01:50,337 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 09:01:50,338 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 09:01:50,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 09:01:50,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 09:01:50,339 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 09:01:50,339 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 09:01:50,340 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 09:01:50,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 09:01:50,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 09:01:50,341 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 09:01:50,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 09:01:50,343 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 09:01:50,344 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 09:01:50,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 09:01:50,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 09:01:50,345 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 09:01:50,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 09:01:50,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 09:01:50,347 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 09:01:50,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 09:01:50,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 09:01:50,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 09:01:50,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 09:01:50,349 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 09:01:50,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 09:01:50,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 09:01:50,350 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 09:01:50,350 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 09:01:50,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 09:01:50,351 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 09:01:50,351 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 09:01:50,358 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 09:01:50,359 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 09:01:50,359 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 09:01:50,359 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 09:01:50,360 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 09:01:50,360 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 09:01:50,360 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 09:01:50,360 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 09:01:50,360 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 09:01:50,360 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 09:01:50,360 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 09:01:50,361 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 09:01:50,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 09:01:50,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 09:01:50,362 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 09:01:50,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 09:01:50,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 09:01:50,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 09:01:50,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 09:01:50,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 09:01:50,363 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 09:01:50,363 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 09:01:50,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 09:01:50,363 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_a0065982-f754-4017-ae45-9bb719872659/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-12-08 09:01:50,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 09:01:50,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 09:01:50,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 09:01:50,394 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 09:01:50,394 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 09:01:50,395 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-12-08 09:01:50,435 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/d2d13e1e2/964275b47ddd47c98cb55e0bd95ad0d5/FLAGe0b02f27f [2018-12-08 09:01:50,824 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 09:01:50,824 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-12-08 09:01:50,827 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/d2d13e1e2/964275b47ddd47c98cb55e0bd95ad0d5/FLAGe0b02f27f [2018-12-08 09:01:50,836 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/d2d13e1e2/964275b47ddd47c98cb55e0bd95ad0d5 [2018-12-08 09:01:50,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 09:01:50,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 09:01:50,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 09:01:50,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 09:01:50,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 09:01:50,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f0260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50, skipping insertion in model container [2018-12-08 09:01:50,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 09:01:50,861 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 09:01:50,951 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:01:50,953 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 09:01:50,963 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:01:50,971 INFO L195 MainTranslator]: Completed translation [2018-12-08 09:01:50,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50 WrapperNode [2018-12-08 09:01:50,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 09:01:50,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 09:01:50,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 09:01:50,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 09:01:50,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 09:01:50,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 09:01:50,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 09:01:50,984 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 09:01:50,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... [2018-12-08 09:01:50,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 09:01:50,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 09:01:50,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 09:01:50,996 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 09:01:50,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/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 [2018-12-08 09:01:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 09:01:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 09:01:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 09:01:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 09:01:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 09:01:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 09:01:51,128 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 09:01:51,128 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 09:01:51,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:01:51 BoogieIcfgContainer [2018-12-08 09:01:51,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 09:01:51,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 09:01:51,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 09:01:51,130 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 09:01:51,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 09:01:50" (1/3) ... [2018-12-08 09:01:51,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a76f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 09:01:51, skipping insertion in model container [2018-12-08 09:01:51,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:50" (2/3) ... [2018-12-08 09:01:51,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a76f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 09:01:51, skipping insertion in model container [2018-12-08 09:01:51,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:01:51" (3/3) ... [2018-12-08 09:01:51,132 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-12-08 09:01:51,138 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 09:01:51,141 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 09:01:51,150 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 09:01:51,166 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 09:01:51,166 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 09:01:51,166 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 09:01:51,166 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 09:01:51,166 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 09:01:51,167 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 09:01:51,167 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 09:01:51,167 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 09:01:51,167 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 09:01:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-08 09:01:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-08 09:01:51,179 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:01:51,179 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:01:51,180 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:01:51,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:01:51,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-08 09:01:51,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:01:51,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:01:51,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:01:51,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:01:51,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:01:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:01:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:01:51,245 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 09:01:51,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 09:01:51 BoogieIcfgContainer [2018-12-08 09:01:51,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 09:01:51,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 09:01:51,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 09:01:51,258 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 09:01:51,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:01:51" (3/4) ... [2018-12-08 09:01:51,260 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 09:01:51,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 09:01:51,261 INFO L168 Benchmark]: Toolchain (without parser) took 422.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -114.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:01:51,262 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:01:51,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.38 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 09:01:51,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.16 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:01:51,263 INFO L168 Benchmark]: Boogie Preprocessor took 11.35 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:01:51,263 INFO L168 Benchmark]: RCFGBuilder took 132.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-08 09:01:51,263 INFO L168 Benchmark]: TraceAbstraction took 128.64 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-08 09:01:51,264 INFO L168 Benchmark]: Witness Printer took 2.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:01:51,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 132.38 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 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 12.16 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.35 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 132.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 128.64 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.56 ms. Allocated memory is still 1.1 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: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 09:01:52,556 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 09:01:52,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 09:01:52,563 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 09:01:52,563 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 09:01:52,564 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 09:01:52,564 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 09:01:52,565 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 09:01:52,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 09:01:52,566 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 09:01:52,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 09:01:52,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 09:01:52,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 09:01:52,568 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 09:01:52,568 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 09:01:52,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 09:01:52,569 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 09:01:52,570 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 09:01:52,571 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 09:01:52,572 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 09:01:52,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 09:01:52,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 09:01:52,574 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 09:01:52,574 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 09:01:52,574 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 09:01:52,574 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 09:01:52,575 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 09:01:52,575 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 09:01:52,576 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 09:01:52,576 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 09:01:52,576 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 09:01:52,577 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 09:01:52,577 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 09:01:52,577 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 09:01:52,577 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 09:01:52,578 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 09:01:52,578 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-08 09:01:52,585 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 09:01:52,585 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 09:01:52,585 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 09:01:52,586 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 09:01:52,586 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 09:01:52,586 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 09:01:52,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 09:01:52,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 09:01:52,588 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 09:01:52,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 09:01:52,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 09:01:52,588 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-08 09:01:52,588 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 09:01:52,588 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 09:01:52,588 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 09:01:52,588 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_a0065982-f754-4017-ae45-9bb719872659/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 -> 30af8e98893bfcc9c7b0879f6e0cde9a5cbf7714 [2018-12-08 09:01:52,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 09:01:52,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 09:01:52,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 09:01:52,621 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 09:01:52,621 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 09:01:52,622 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-12-08 09:01:52,665 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/9981731b1/2144d85fbd1546349059e6c0337b76e9/FLAG73ec7f77a [2018-12-08 09:01:52,961 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 09:01:52,962 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/sv-benchmarks/c/floats-cdfpl/square_2_false-unreach-call_true-termination.i [2018-12-08 09:01:52,965 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/9981731b1/2144d85fbd1546349059e6c0337b76e9/FLAG73ec7f77a [2018-12-08 09:01:52,973 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/data/9981731b1/2144d85fbd1546349059e6c0337b76e9 [2018-12-08 09:01:52,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 09:01:52,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 09:01:52,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 09:01:52,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 09:01:52,978 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 09:01:52,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:01:52" (1/1) ... [2018-12-08 09:01:52,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b45ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:52, skipping insertion in model container [2018-12-08 09:01:52,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:01:52" (1/1) ... [2018-12-08 09:01:52,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 09:01:52,994 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 09:01:53,079 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:01:53,083 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 09:01:53,093 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:01:53,101 INFO L195 MainTranslator]: Completed translation [2018-12-08 09:01:53,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53 WrapperNode [2018-12-08 09:01:53,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 09:01:53,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 09:01:53,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 09:01:53,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 09:01:53,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 09:01:53,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 09:01:53,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 09:01:53,116 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 09:01:53,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... [2018-12-08 09:01:53,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 09:01:53,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 09:01:53,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 09:01:53,129 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 09:01:53,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/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 [2018-12-08 09:01:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 09:01:53,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 09:01:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 09:01:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 09:01:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 09:01:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 09:01:55,331 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 09:01:55,331 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 09:01:55,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:01:55 BoogieIcfgContainer [2018-12-08 09:01:55,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 09:01:55,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 09:01:55,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 09:01:55,335 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 09:01:55,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 09:01:52" (1/3) ... [2018-12-08 09:01:55,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 09:01:55, skipping insertion in model container [2018-12-08 09:01:55,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:01:53" (2/3) ... [2018-12-08 09:01:55,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 09:01:55, skipping insertion in model container [2018-12-08 09:01:55,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:01:55" (3/3) ... [2018-12-08 09:01:55,338 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2_false-unreach-call_true-termination.i [2018-12-08 09:01:55,343 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 09:01:55,347 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 09:01:55,356 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 09:01:55,372 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 09:01:55,372 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 09:01:55,372 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 09:01:55,372 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 09:01:55,372 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 09:01:55,373 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 09:01:55,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 09:01:55,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 09:01:55,373 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 09:01:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-08 09:01:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-08 09:01:55,387 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 09:01:55,388 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:01:55,389 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 09:01:55,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:01:55,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-08 09:01:55,395 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 09:01:55,395 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/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 [2018-12-08 09:01:55,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:02:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:03:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:03:09,103 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 09:03:09,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 09:03:09 BoogieIcfgContainer [2018-12-08 09:03:09,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 09:03:09,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 09:03:09,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 09:03:09,120 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 09:03:09,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:01:55" (3/4) ... [2018-12-08 09:03:09,122 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 09:03:09,147 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a0065982-f754-4017-ae45-9bb719872659/bin-2019/uautomizer/witness.graphml [2018-12-08 09:03:09,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 09:03:09,147 INFO L168 Benchmark]: Toolchain (without parser) took 76172.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -134.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:03:09,148 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-08 09:03:09,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.94 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 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. [2018-12-08 09:03:09,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.56 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. [2018-12-08 09:03:09,149 INFO L168 Benchmark]: Boogie Preprocessor took 13.10 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 09:03:09,150 INFO L168 Benchmark]: RCFGBuilder took 2202.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-08 09:03:09,150 INFO L168 Benchmark]: TraceAbstraction took 73786.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-12-08 09:03:09,151 INFO L168 Benchmark]: Witness Printer took 27.53 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. [2018-12-08 09:03:09,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 125.94 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 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 13.56 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 13.10 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2202.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 73786.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * Witness Printer took 27.53 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: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L14] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L15] __VERIFIER_error() VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 73.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 31.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...