./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 5cdc4d12f446be57385f35c672efbdd6980b00fa .......................................................................................................................................................................................................................... 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/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 5cdc4d12f446be57385f35c672efbdd6980b00fa .............................................................................................................................................................................................................................. 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 0.1.24-cad4683 [2019-10-22 08:57:20,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:20,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:20,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:20,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:20,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:20,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:20,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:20,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:20,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:20,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:20,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:20,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:20,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:20,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:20,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:20,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:20,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:20,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:20,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:20,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:20,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:20,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:20,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:20,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:20,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:20,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:20,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:20,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:20,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:20,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:20,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:20,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:20,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:20,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:20,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:20,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:20,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:20,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:20,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:20,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:20,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:20,438 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:20,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:20,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:20,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:20,440 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:20,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:20,440 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:20,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:20,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:20,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:20,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:20,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:20,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:20,442 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:20,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:20,442 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:20,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:20,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:20,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:20,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:20,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:20,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:20,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:20,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:20,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:20,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:20,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:20,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:20,445 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/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-10-22 08:57:20,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:20,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:20,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:20,483 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:20,483 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:20,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-10-22 08:57:20,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/e8f13a54a/443dc36968344140a71ff103b3512f2c/FLAG11a2b1d9f [2019-10-22 08:57:20,910 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:20,910 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-10-22 08:57:20,915 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/e8f13a54a/443dc36968344140a71ff103b3512f2c/FLAG11a2b1d9f [2019-10-22 08:57:21,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/e8f13a54a/443dc36968344140a71ff103b3512f2c [2019-10-22 08:57:21,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:21,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:21,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:21,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:21,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:21,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f5a3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21, skipping insertion in model container [2019-10-22 08:57:21,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,347 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:21,361 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:21,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:21,511 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:21,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:21,600 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:21,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21 WrapperNode [2019-10-22 08:57:21,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:21,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:21,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:21,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:21,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:21,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:21,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:21,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:21,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... [2019-10-22 08:57:21,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:21,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:21,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:21,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:21,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 [2019-10-22 08:57:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:21,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:21,831 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:21,832 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:57:21,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:21 BoogieIcfgContainer [2019-10-22 08:57:21,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:21,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:21,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:21,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:21,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:21" (1/3) ... [2019-10-22 08:57:21,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c874c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:21, skipping insertion in model container [2019-10-22 08:57:21,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:21" (2/3) ... [2019-10-22 08:57:21,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c874c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:21, skipping insertion in model container [2019-10-22 08:57:21,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:21" (3/3) ... [2019-10-22 08:57:21,839 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-10-22 08:57:21,848 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:21,854 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:57:21,861 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:57:21,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:21,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:21,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:21,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:21,878 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:21,878 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:21,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:21,879 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 08:57:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:57:21,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:21,896 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:57:21,897 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:21,901 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-10-22 08:57:21,909 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:21,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358736367] [2019-10-22 08:57:21,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:21,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:21,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:22,004 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:22,004 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:57:22,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:22 BoogieIcfgContainer [2019-10-22 08:57:22,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:22,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:22,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:22,017 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:22,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:21" (3/4) ... [2019-10-22 08:57:22,020 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:57:22,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:22,022 INFO L168 Benchmark]: Toolchain (without parser) took 689.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -161.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:22,023 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:22,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:22,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.32 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:22,025 INFO L168 Benchmark]: Boogie Preprocessor took 14.54 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. [2019-10-22 08:57:22,025 INFO L168 Benchmark]: RCFGBuilder took 182.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:22,026 INFO L168 Benchmark]: TraceAbstraction took 182.78 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:22,026 INFO L168 Benchmark]: Witness Printer took 3.45 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. [2019-10-22 08:57:22,034 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.32 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.54 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. * RCFGBuilder took 182.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 182.78 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, 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=10occurred 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, 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:24,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:24,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:24,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:24,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:24,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:24,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:24,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:24,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:24,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:24,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:24,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:24,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:24,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:24,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:24,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:24,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:24,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:24,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:24,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:24,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:24,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:24,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:24,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:24,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:24,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:24,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:24,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:24,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:24,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:24,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:24,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:24,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:24,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:24,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:24,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:24,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:24,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:24,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:24,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:24,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:24,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 08:57:24,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:24,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:24,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:24,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:24,218 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:24,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:24,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:24,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:24,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:24,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:24,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:24,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:24,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 08:57:24,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 08:57:24,220 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:24,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:24,220 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:24,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:24,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:24,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:24,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:24,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:24,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:24,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:24,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:24,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:24,222 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 08:57:24,222 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 08:57:24,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:24,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 08:57:24,223 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/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-10-22 08:57:24,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:24,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:24,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:24,277 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:24,280 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:24,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-10-22 08:57:24,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/1587b4a11/44ab01d2045c4ba2be8fb5dc2e97b9df/FLAG3ddad4dec [2019-10-22 08:57:24,706 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:24,706 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-10-22 08:57:24,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/1587b4a11/44ab01d2045c4ba2be8fb5dc2e97b9df/FLAG3ddad4dec [2019-10-22 08:57:24,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/data/1587b4a11/44ab01d2045c4ba2be8fb5dc2e97b9df [2019-10-22 08:57:24,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:24,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:24,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:24,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:24,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:24,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:24,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edd508b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24, skipping insertion in model container [2019-10-22 08:57:24,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:24,751 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:24,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:24,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:24,909 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:24,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:24,936 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:24,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24 WrapperNode [2019-10-22 08:57:24,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:24,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:24,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:24,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:24,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:24,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:25,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:25,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:25,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:25,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... [2019-10-22 08:57:25,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:25,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:25,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:25,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:25,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 [2019-10-22 08:57:25,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:25,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:25,768 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:25,768 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:57:25,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:25 BoogieIcfgContainer [2019-10-22 08:57:25,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:25,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:25,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:25,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:25,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:24" (1/3) ... [2019-10-22 08:57:25,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd1a5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:25, skipping insertion in model container [2019-10-22 08:57:25,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:24" (2/3) ... [2019-10-22 08:57:25,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd1a5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:25, skipping insertion in model container [2019-10-22 08:57:25,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:25" (3/3) ... [2019-10-22 08:57:25,776 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-10-22 08:57:25,782 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:25,788 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:57:25,798 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:57:25,817 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:25,818 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:25,818 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:25,818 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:25,818 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:25,818 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:25,818 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:25,819 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 08:57:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:57:25,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:25,837 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:57:25,838 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:25,843 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-10-22 08:57:25,849 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:57:25,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614223702] [2019-10-22 08:57:25,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/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 [2019-10-22 08:57:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:26,019 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 08:57:26,020 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:57:26,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 08:57:26,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:26 BoogieIcfgContainer [2019-10-22 08:57:26,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:26,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:26,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:26,240 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:26,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:25" (3/4) ... [2019-10-22 08:57:26,244 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:57:26,283 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_10d2643e-3692-4815-ac6d-69448ece56b4/bin/uautomizer/witness.graphml [2019-10-22 08:57:26,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:26,285 INFO L168 Benchmark]: Toolchain (without parser) took 1552.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -147.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:26,286 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:26,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.17 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:26,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:26,287 INFO L168 Benchmark]: Boogie Preprocessor took 21.95 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. [2019-10-22 08:57:26,288 INFO L168 Benchmark]: RCFGBuilder took 689.42 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:26,288 INFO L168 Benchmark]: TraceAbstraction took 469.30 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:26,289 INFO L168 Benchmark]: Witness Printer took 44.01 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. [2019-10-22 08:57:26,291 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.17 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 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 119.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.95 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. * RCFGBuilder took 689.42 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 469.30 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 44.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, 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=10occurred 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, 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...