./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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 0.1.25-f470102 [2019-12-07 11:41:56,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:41:56,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:41:56,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:41:56,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:41:56,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:41:56,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:41:56,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:41:56,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:41:56,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:41:56,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:41:56,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:41:56,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:41:56,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:41:56,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:41:56,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:41:56,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:41:56,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:41:56,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:41:56,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:41:56,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:41:56,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:41:56,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:41:56,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:41:56,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:41:56,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:41:56,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:41:56,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:41:56,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:41:56,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:41:56,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:41:56,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:41:56,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:41:56,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:41:56,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:41:56,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:41:56,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:41:56,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:41:56,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:41:56,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:41:56,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:41:56,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 11:41:56,680 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:41:56,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:41:56,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:41:56,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:41:56,681 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:41:56,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:41:56,681 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:41:56,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:41:56,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:41:56,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:41:56,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:41:56,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:41:56,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:41:56,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:41:56,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:41:56,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:41:56,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:41:56,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:41:56,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:41:56,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:41:56,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:41:56,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:41:56,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:41:56,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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 [2019-12-07 11:41:56,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:41:56,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:41:56,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:41:56,795 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:41:56,795 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:41:56,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-12-07 11:41:56,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/4a8aca935/98e975297dce4289a6d43aadde883522/FLAGc29228f52 [2019-12-07 11:41:57,260 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:41:57,261 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-12-07 11:41:57,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/4a8aca935/98e975297dce4289a6d43aadde883522/FLAGc29228f52 [2019-12-07 11:41:57,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/4a8aca935/98e975297dce4289a6d43aadde883522 [2019-12-07 11:41:57,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:41:57,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:41:57,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:41:57,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:41:57,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:41:57,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5947b845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57, skipping insertion in model container [2019-12-07 11:41:57,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:41:57,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:41:57,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:41:57,407 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:41:57,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:41:57,460 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:41:57,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57 WrapperNode [2019-12-07 11:41:57,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:41:57,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:41:57,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:41:57,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:41:57,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:41:57,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:41:57,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:41:57,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:41:57,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... [2019-12-07 11:41:57,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:41:57,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:41:57,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:41:57,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:41:57,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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 [2019-12-07 11:41:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:41:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:41:57,621 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:41:57,621 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 11:41:57,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:41:57 BoogieIcfgContainer [2019-12-07 11:41:57,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:41:57,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:41:57,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:41:57,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:41:57,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:41:57" (1/3) ... [2019-12-07 11:41:57,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389bc09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:41:57, skipping insertion in model container [2019-12-07 11:41:57,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:57" (2/3) ... [2019-12-07 11:41:57,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389bc09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:41:57, skipping insertion in model container [2019-12-07 11:41:57,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:41:57" (3/3) ... [2019-12-07 11:41:57,628 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-12-07 11:41:57,634 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:41:57,639 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:41:57,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:41:57,660 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:41:57,660 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:41:57,660 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:41:57,660 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:41:57,660 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:41:57,661 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:41:57,661 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:41:57,661 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:41:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-12-07 11:41:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 11:41:57,672 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:57,673 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 11:41:57,673 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:41:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 11:41:57,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:57,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843627242] [2019-12-07 11:41:57,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:41:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:41:57,752 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:41:57,752 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:41:57,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:41:57 BoogieIcfgContainer [2019-12-07 11:41:57,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:41:57,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:41:57,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:41:57,763 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:41:57,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:41:57" (3/4) ... [2019-12-07 11:41:57,765 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:41:57,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:41:57,767 INFO L168 Benchmark]: Toolchain (without parser) took 490.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -128.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:57,767 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:57,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -158.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:57,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.77 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. [2019-12-07 11:41:57,769 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 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. [2019-12-07 11:41:57,769 INFO L168 Benchmark]: RCFGBuilder took 128.28 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:57,770 INFO L168 Benchmark]: TraceAbstraction took 139.45 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:57,770 INFO L168 Benchmark]: Witness Printer took 2.98 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. [2019-12-07 11:41:57,772 INFO L335 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 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -158.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.77 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. * Boogie Preprocessor took 11.36 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. * RCFGBuilder took 128.28 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 139.45 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.98 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; [L14] COND TRUE !(result >= 0.0f && result < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-12-07 11:41:59,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:41:59,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:41:59,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:41:59,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:41:59,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:41:59,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:41:59,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:41:59,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:41:59,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:41:59,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:41:59,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:41:59,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:41:59,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:41:59,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:41:59,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:41:59,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:41:59,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:41:59,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:41:59,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:41:59,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:41:59,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:41:59,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:41:59,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:41:59,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:41:59,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:41:59,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:41:59,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:41:59,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:41:59,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:41:59,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:41:59,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:41:59,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:41:59,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:41:59,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:41:59,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:41:59,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:41:59,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:41:59,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:41:59,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:41:59,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:41:59,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 11:41:59,223 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:41:59,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:41:59,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:41:59,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:41:59,224 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:41:59,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:41:59,224 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:41:59,225 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:41:59,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:41:59,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:41:59,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:41:59,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:41:59,228 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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 [2019-12-07 11:41:59,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:41:59,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:41:59,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:41:59,401 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:41:59,401 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:41:59,402 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2019-12-07 11:41:59,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/4b63f7133/88f2ee356df84fcaae0254d8507ce85f/FLAG252ed96fc [2019-12-07 11:41:59,883 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:41:59,883 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/sv-benchmarks/c/floats-cdfpl/square_1.i [2019-12-07 11:41:59,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/4b63f7133/88f2ee356df84fcaae0254d8507ce85f/FLAG252ed96fc [2019-12-07 11:41:59,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/data/4b63f7133/88f2ee356df84fcaae0254d8507ce85f [2019-12-07 11:41:59,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:41:59,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:41:59,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:41:59,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:41:59,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:41:59,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:41:59" (1/1) ... [2019-12-07 11:41:59,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2329897b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:41:59, skipping insertion in model container [2019-12-07 11:41:59,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:41:59" (1/1) ... [2019-12-07 11:41:59,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:41:59,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:42:00,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:42:00,022 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:42:00,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:42:00,043 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:42:00,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00 WrapperNode [2019-12-07 11:42:00,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:42:00,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:42:00,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:42:00,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:42:00,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:42:00,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:42:00,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:42:00,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:42:00,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... [2019-12-07 11:42:00,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:42:00,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:42:00,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:42:00,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:42:00,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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 [2019-12-07 11:42:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:42:00,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:42:02,303 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:42:02,303 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 11:42:02,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:42:02 BoogieIcfgContainer [2019-12-07 11:42:02,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:42:02,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:42:02,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:42:02,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:42:02,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:41:59" (1/3) ... [2019-12-07 11:42:02,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ce7cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:42:02, skipping insertion in model container [2019-12-07 11:42:02,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:42:00" (2/3) ... [2019-12-07 11:42:02,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ce7cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:42:02, skipping insertion in model container [2019-12-07 11:42:02,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:42:02" (3/3) ... [2019-12-07 11:42:02,309 INFO L109 eAbstractionObserver]: Analyzing ICFG square_1.i [2019-12-07 11:42:02,315 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:42:02,321 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:42:02,331 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:42:02,347 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:42:02,347 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:42:02,347 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:42:02,347 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:42:02,348 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:42:02,348 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:42:02,348 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:42:02,348 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:42:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 11:42:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 11:42:02,360 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:42:02,360 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 11:42:02,360 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:42:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:42:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 11:42:02,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 11:42:02,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963431478] [2019-12-07 11:42:02,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/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 [2019-12-07 11:42:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:42:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:42:33,366 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 11:42:33,366 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:42:33,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:42:33,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:42:33 BoogieIcfgContainer [2019-12-07 11:42:33,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:42:33,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:42:33,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:42:33,599 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:42:33,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:42:02" (3/4) ... [2019-12-07 11:42:33,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:42:33,634 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e59dd4e1-9afd-4c83-98be-3ef6a0672b37/bin/uautomizer/witness.graphml [2019-12-07 11:42:33,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:42:33,636 INFO L168 Benchmark]: Toolchain (without parser) took 33737.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -103.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,636 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:42:33,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.05 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,637 INFO L168 Benchmark]: Boogie Preprocessor took 15.60 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,638 INFO L168 Benchmark]: RCFGBuilder took 2193.84 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,638 INFO L168 Benchmark]: TraceAbstraction took 31293.31 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: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,639 INFO L168 Benchmark]: Witness Printer took 35.62 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:42:33,641 INFO L335 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.05 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 50.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.60 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2193.84 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 31293.31 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: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * Witness Printer took 35.62 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: 7.0 MB). Peak memory consumption was 7.0 MB. 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; [L14] COND TRUE !(result >= 0.0f && result < 1.39f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 31.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 16.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...