./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.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_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 3a552ed0b53624bc27612451ed4207d0101db39b ........................................................................................................................................................................................................................... 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_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 3a552ed0b53624bc27612451ed4207d0101db39b .............................................................................................................................................................................................................................. 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 09:01:05,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:05,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:05,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:05,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:05,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:05,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:05,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:05,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:05,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:05,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:05,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:05,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:05,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:05,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:05,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:05,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:05,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:05,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:05,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:05,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:05,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:05,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:05,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:05,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:05,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:05,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:05,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:05,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:05,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:05,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:05,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:05,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:05,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:05,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:05,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:05,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:05,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:05,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:05,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:05,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:05,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:01:05,266 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:05,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:05,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:05,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:05,267 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:05,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:05,268 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:05,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:05,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:05,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:05,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:05,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:05,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:05,269 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:05,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:05,269 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:05,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:05,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:05,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:05,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:05,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:05,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:05,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:05,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:05,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:05,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:05,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:05,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:05,271 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_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2019-10-22 09:01:05,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:05,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:05,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:05,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:05,316 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:05,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 09:01:05,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/fd38400c9/7274be71276d49ebb4805287219101fc/FLAG97f79ee5e [2019-10-22 09:01:05,732 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:05,733 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 09:01:05,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/fd38400c9/7274be71276d49ebb4805287219101fc/FLAG97f79ee5e [2019-10-22 09:01:05,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/fd38400c9/7274be71276d49ebb4805287219101fc [2019-10-22 09:01:05,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:05,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:05,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:05,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:05,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:05,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:05,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d067a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05, skipping insertion in model container [2019-10-22 09:01:05,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:05,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:05,778 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:05,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:05,899 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:05,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:05,984 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:05,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05 WrapperNode [2019-10-22 09:01:05,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:05,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:05,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:05,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:05,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:06,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:06,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:06,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:06,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... [2019-10-22 09:01:06,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:06,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:06,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:06,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:06,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 09:01:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:06,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:06,229 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:06,229 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:01:06,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:06 BoogieIcfgContainer [2019-10-22 09:01:06,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:06,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:06,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:06,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:06,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:05" (1/3) ... [2019-10-22 09:01:06,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4124b488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:06, skipping insertion in model container [2019-10-22 09:01:06,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:05" (2/3) ... [2019-10-22 09:01:06,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4124b488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:06, skipping insertion in model container [2019-10-22 09:01:06,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:06" (3/3) ... [2019-10-22 09:01:06,240 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-10-22 09:01:06,249 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:06,256 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:06,267 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:06,291 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:06,292 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:06,292 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:06,292 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:06,292 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:06,292 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:06,292 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:06,292 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-10-22 09:01:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 09:01:06,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:06,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 09:01:06,312 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-10-22 09:01:06,323 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:06,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874029118] [2019-10-22 09:01:06,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:06,323 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:06,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:06,427 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:06,427 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:01:06,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:06 BoogieIcfgContainer [2019-10-22 09:01:06,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:06,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:06,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:06,441 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:06,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:06" (3/4) ... [2019-10-22 09:01:06,444 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:01:06,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:06,446 INFO L168 Benchmark]: Toolchain (without parser) took 693.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -151.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:06,446 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:06,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:06,448 INFO L168 Benchmark]: Boogie Preprocessor took 16.01 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 09:01:06,448 INFO L168 Benchmark]: RCFGBuilder took 195.49 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:06,449 INFO L168 Benchmark]: TraceAbstraction took 207.77 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 09:01:06,449 INFO L168 Benchmark]: Witness Printer took 3.28 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 09:01:06,453 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.01 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. * RCFGBuilder took 195.49 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 207.77 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 3.28 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: 6]: 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 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=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 0.1.24-cad4683 [2019-10-22 09:01:08,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:08,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:08,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:08,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:08,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:08,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:08,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:08,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:08,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:08,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:08,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:08,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:08,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:08,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:08,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:08,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:08,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:08,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:08,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:08,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:08,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:08,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:08,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:08,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:08,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:08,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:08,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:08,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:08,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:08,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:08,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:08,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:08,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:08,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:08,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:08,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:08,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:08,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:08,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:08,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:08,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 09:01:08,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:08,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:08,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:08,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:08,410 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:08,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:08,410 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:08,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:08,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:08,411 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:08,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:08,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:08,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:08,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:08,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:08,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:08,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:08,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:08,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:08,413 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:01:08,413 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:01:08,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:08,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:01:08,413 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_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2019-10-22 09:01:08,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:08,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:08,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:08,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:08,465 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:08,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 09:01:08,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/f5fc28ba5/baeb58b73aa349ffbfcb9db352c26b34/FLAG9aecb0652 [2019-10-22 09:01:08,882 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:08,883 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 09:01:08,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/f5fc28ba5/baeb58b73aa349ffbfcb9db352c26b34/FLAG9aecb0652 [2019-10-22 09:01:08,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/data/f5fc28ba5/baeb58b73aa349ffbfcb9db352c26b34 [2019-10-22 09:01:08,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:08,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:08,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:08,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:08,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:08,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:08" (1/1) ... [2019-10-22 09:01:08,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75db845d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:08, skipping insertion in model container [2019-10-22 09:01:08,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:08" (1/1) ... [2019-10-22 09:01:08,913 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:08,926 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:09,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:09,051 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:09,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:09,080 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:09,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09 WrapperNode [2019-10-22 09:01:09,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:09,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:09,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:09,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:09,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:09,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:09,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:09,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:09,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... [2019-10-22 09:01:09,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:09,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:09,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:09,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:09,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 09:01:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:10,273 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:10,273 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:01:10,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:10 BoogieIcfgContainer [2019-10-22 09:01:10,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:10,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:10,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:10,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:10,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:08" (1/3) ... [2019-10-22 09:01:10,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bd6f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:10, skipping insertion in model container [2019-10-22 09:01:10,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:09" (2/3) ... [2019-10-22 09:01:10,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bd6f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:10, skipping insertion in model container [2019-10-22 09:01:10,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:10" (3/3) ... [2019-10-22 09:01:10,287 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-10-22 09:01:10,294 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:10,300 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:10,310 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:10,330 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:10,330 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:10,330 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:10,330 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:10,330 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:10,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:10,331 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:10,331 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-10-22 09:01:10,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 09:01:10,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:10,346 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 09:01:10,348 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:10,353 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-10-22 09:01:10,363 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:01:10,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645586471] [2019-10-22 09:01:10,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/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 09:01:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:10,577 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 09:01:10,578 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:01:10,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 09:01:10,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:10 BoogieIcfgContainer [2019-10-22 09:01:10,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:10,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:10,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:10,795 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:10,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:10" (3/4) ... [2019-10-22 09:01:10,798 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:01:10,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fce605a3-f7ba-44e5-abcb-1434e436e0e3/bin/uautomizer/witness.graphml [2019-10-22 09:01:10,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:10,842 INFO L168 Benchmark]: Toolchain (without parser) took 1940.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -136.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:10,842 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 09:01:10,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.97 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:10,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:10,844 INFO L168 Benchmark]: Boogie Preprocessor took 16.75 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:10,845 INFO L168 Benchmark]: RCFGBuilder took 1083.15 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:10,845 INFO L168 Benchmark]: TraceAbstraction took 519.11 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:10,846 INFO L168 Benchmark]: Witness Printer took 45.04 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 09:01:10,849 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 179.97 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.75 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1083.15 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 519.11 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 45.04 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=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, 0.1s 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 proved your program to be incorrect! Received shutdown request...