./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/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 9b4984d971b5a5a3b565edf502e7d7464558f166 ..................................................................................................................................................................................................................................... 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_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/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 9b4984d971b5a5a3b565edf502e7d7464558f166 .......................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:48:39,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:48:39,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:48:39,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:48:39,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:48:39,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:48:39,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:48:39,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:48:39,564 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:48:39,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:48:39,565 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:48:39,565 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:48:39,570 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:48:39,570 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:48:39,571 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:48:39,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:48:39,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:48:39,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:48:39,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:48:39,575 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:48:39,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:48:39,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:48:39,577 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:48:39,577 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:48:39,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:48:39,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:48:39,579 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:48:39,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:48:39,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:48:39,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:48:39,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:48:39,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:48:39,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:48:39,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:48:39,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:48:39,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:48:39,583 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 11:48:39,593 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:48:39,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:48:39,594 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:48:39,594 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:48:39,594 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:48:39,594 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:48:39,594 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:48:39,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:48:39,595 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:48:39,595 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:48:39,595 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:48:39,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:48:39,595 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:48:39,595 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:48:39,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:48:39,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:48:39,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:48:39,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:48:39,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:48:39,597 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:48:39,597 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:48:39,597 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:48:39,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:48:39,598 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_cdc54a4a-899b-4f5b-8238-e855ddf385bd/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2018-11-10 11:48:39,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:48:39,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:48:39,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:48:39,634 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:48:39,635 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:48:39,635 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-10 11:48:39,679 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/f293f83fd/2b2fcae708ea47fd92c05ab04e8fb412/FLAGf165f0262 [2018-11-10 11:48:39,985 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:48:39,985 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-10 11:48:39,990 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/f293f83fd/2b2fcae708ea47fd92c05ab04e8fb412/FLAGf165f0262 [2018-11-10 11:48:40,000 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/f293f83fd/2b2fcae708ea47fd92c05ab04e8fb412 [2018-11-10 11:48:40,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:48:40,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:48:40,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:48:40,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:48:40,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:48:40,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0d3238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40, skipping insertion in model container [2018-11-10 11:48:40,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:48:40,034 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:48:40,134 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:48:40,136 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:48:40,146 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:48:40,155 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:48:40,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40 WrapperNode [2018-11-10 11:48:40,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:48:40,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:48:40,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:48:40,156 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:48:40,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... [2018-11-10 11:48:40,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:48:40,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:48:40,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:48:40,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:48:40,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:48:40,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:48:40,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:48:40,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:48:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:48:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 11:48:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 11:48:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:48:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:48:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:48:40,327 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:48:40,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:40 BoogieIcfgContainer [2018-11-10 11:48:40,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:48:40,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:48:40,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:48:40,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:48:40,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:48:40" (1/3) ... [2018-11-10 11:48:40,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:40, skipping insertion in model container [2018-11-10 11:48:40,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:40" (2/3) ... [2018-11-10 11:48:40,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:40, skipping insertion in model container [2018-11-10 11:48:40,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:40" (3/3) ... [2018-11-10 11:48:40,333 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-11-10 11:48:40,340 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:48:40,345 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:48:40,354 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:48:40,375 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:48:40,375 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:48:40,375 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:48:40,375 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:48:40,376 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:48:40,376 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:48:40,376 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:48:40,376 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:48:40,376 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:48:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-10 11:48:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-10 11:48:40,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:48:40,394 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:48:40,395 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:48:40,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:48:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-10 11:48:40,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:48:40,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:48:40,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:48:40,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:48:40,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:48:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:48:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:48:40,474 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 11:48:40,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:48:40 BoogieIcfgContainer [2018-11-10 11:48:40,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:48:40,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:48:40,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:48:40,488 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:48:40,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:40" (3/4) ... [2018-11-10 11:48:40,491 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 11:48:40,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:48:40,492 INFO L168 Benchmark]: Toolchain (without parser) took 488.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:48:40,493 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:48:40,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.41 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 11:48:40,494 INFO L168 Benchmark]: Boogie Preprocessor took 15.53 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:48:40,494 INFO L168 Benchmark]: RCFGBuilder took 156.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -208.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:48:40,495 INFO L168 Benchmark]: TraceAbstraction took 158.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-10 11:48:40,495 INFO L168 Benchmark]: Witness Printer took 3.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:48:40,497 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.41 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.53 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -208.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 158.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.70 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: 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 < 1.39f) 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, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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 0.1.23-1dbac8b [2018-11-10 11:48:41,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:48:41,950 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:48:41,958 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:48:41,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:48:41,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:48:41,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:48:41,960 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:48:41,961 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:48:41,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:48:41,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:48:41,963 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:48:41,963 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:48:41,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:48:41,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:48:41,965 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:48:41,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:48:41,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:48:41,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:48:41,969 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:48:41,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:48:41,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:48:41,973 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:48:41,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:48:41,973 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:48:41,974 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:48:41,974 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:48:41,975 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:48:41,976 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:48:41,976 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:48:41,976 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:48:41,977 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:48:41,977 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:48:41,977 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:48:41,978 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:48:41,978 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:48:41,979 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 11:48:41,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:48:41,989 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:48:41,989 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:48:41,989 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:48:41,990 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:48:41,990 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:48:41,990 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:48:41,990 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:48:41,990 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 11:48:41,991 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:48:41,992 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:48:41,992 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:48:41,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:48:41,992 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:48:41,992 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:48:41,992 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:48:41,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:48:41,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:48:41,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:48:41,993 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:48:41,993 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 11:48:41,993 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:48:41,993 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 11:48:41,993 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 11:48:41,993 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_cdc54a4a-899b-4f5b-8238-e855ddf385bd/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 -> 9b4984d971b5a5a3b565edf502e7d7464558f166 [2018-11-10 11:48:42,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:48:42,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:48:42,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:48:42,032 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:48:42,032 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:48:42,033 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-10 11:48:42,068 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/2496de397/8959c6dd6d0d4841ac749fb3be51692f/FLAGe3b2937dd [2018-11-10 11:48:42,362 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:48:42,362 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/sv-benchmarks/c/floats-cdfpl/square_1_false-unreach-call_true-termination.i [2018-11-10 11:48:42,366 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/2496de397/8959c6dd6d0d4841ac749fb3be51692f/FLAGe3b2937dd [2018-11-10 11:48:42,374 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/data/2496de397/8959c6dd6d0d4841ac749fb3be51692f [2018-11-10 11:48:42,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:48:42,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:48:42,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:48:42,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:48:42,379 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:48:42,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161d2824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42, skipping insertion in model container [2018-11-10 11:48:42,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:48:42,399 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:48:42,522 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:48:42,526 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:48:42,536 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:48:42,545 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:48:42,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42 WrapperNode [2018-11-10 11:48:42,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:48:42,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:48:42,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:48:42,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:48:42,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... [2018-11-10 11:48:42,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:48:42,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:48:42,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:48:42,566 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:48:42,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:48:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:48:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:48:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 11:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 11:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:48:44,784 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:48:44,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:44 BoogieIcfgContainer [2018-11-10 11:48:44,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:48:44,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:48:44,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:48:44,787 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:48:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:48:42" (1/3) ... [2018-11-10 11:48:44,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaaeb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:44, skipping insertion in model container [2018-11-10 11:48:44,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:42" (2/3) ... [2018-11-10 11:48:44,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaaeb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:44, skipping insertion in model container [2018-11-10 11:48:44,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:44" (3/3) ... [2018-11-10 11:48:44,789 INFO L112 eAbstractionObserver]: Analyzing ICFG square_1_false-unreach-call_true-termination.i [2018-11-10 11:48:44,797 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:48:44,803 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:48:44,814 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:48:44,832 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:48:44,832 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:48:44,832 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:48:44,832 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:48:44,832 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:48:44,832 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:48:44,832 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:48:44,833 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:48:44,833 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:48:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-10 11:48:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-10 11:48:44,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:48:44,850 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:48:44,852 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:48:44,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:48:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-10 11:48:44,859 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 11:48:44,860 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-10 11:48:44,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:49:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:49:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:49:41,012 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 11:49:41,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:49:41 BoogieIcfgContainer [2018-11-10 11:49:41,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:49:41,029 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:49:41,029 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:49:41,029 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:49:41,029 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:44" (3/4) ... [2018-11-10 11:49:41,031 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 11:49:41,057 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cdc54a4a-899b-4f5b-8238-e855ddf385bd/bin-2019/uautomizer/witness.graphml [2018-11-10 11:49:41,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:49:41,058 INFO L168 Benchmark]: Toolchain (without parser) took 58681.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -123.7 MB). Peak memory consumption was 525.7 kB. Max. memory is 11.5 GB. [2018-11-10 11:49:41,059 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:49:41,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.74 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:49:41,060 INFO L168 Benchmark]: Boogie Preprocessor took 19.18 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:49:41,060 INFO L168 Benchmark]: RCFGBuilder took 2218.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:49:41,060 INFO L168 Benchmark]: TraceAbstraction took 56243.41 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2018-11-10 11:49:41,061 INFO L168 Benchmark]: Witness Printer took 28.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:49:41,063 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.74 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.18 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2218.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -165.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 56243.41 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Witness Printer took 28.98 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 < 1.39f) 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, 56.2s 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, 28.1s 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...