./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan --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 Taipan --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/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan --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 Taipan --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 0.1.24-6b5699a [2019-11-26 02:04:21,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:04:21,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:04:21,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:04:21,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:04:21,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:04:21,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:04:21,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:04:21,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:04:21,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:04:21,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:04:21,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:04:21,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:04:21,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:04:21,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:04:21,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:04:21,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:04:21,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:04:21,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:04:21,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:04:21,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:04:21,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:04:21,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:04:21,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:04:21,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:04:21,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:04:21,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:04:21,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:04:21,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:04:21,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:04:21,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:04:21,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:04:21,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:04:21,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:04:21,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:04:21,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:04:21,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:04:21,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:04:21,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:04:21,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:04:21,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:04:21,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:04:21,340 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:04:21,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:04:21,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:04:21,351 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:04:21,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:04:21,351 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:04:21,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:04:21,351 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:04:21,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:04:21,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:04:21,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:04:21,352 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:04:21,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:04:21,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:04:21,353 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:04:21,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:04:21,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:04:21,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:04:21,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:04:21,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:04:21,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:04:21,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:04:21,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:04:21,355 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:04:21,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:04:21,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:04:21,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:04:21,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:04:21,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:04:21,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:04:21,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:04:21,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:04:21,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:04:21,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:04:21,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:04:21,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:04:21,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:04:21,357 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan 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 -> Taipan 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 [2019-11-26 02:04:21,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:04:21,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:04:21,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:04:21,505 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:04:21,505 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:04:21,506 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-26 02:04:21,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/16e6ebae7/19d4c7279d9f499095f76b38adf76b4c/FLAGe69365481 [2019-11-26 02:04:21,963 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:04:21,963 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-26 02:04:21,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/16e6ebae7/19d4c7279d9f499095f76b38adf76b4c/FLAGe69365481 [2019-11-26 02:04:21,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/16e6ebae7/19d4c7279d9f499095f76b38adf76b4c [2019-11-26 02:04:21,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:04:21,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:04:21,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:21,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:04:21,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:04:21,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:21" (1/1) ... [2019-11-26 02:04:21,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b33eedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:21, skipping insertion in model container [2019-11-26 02:04:21,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:21" (1/1) ... [2019-11-26 02:04:22,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:04:22,022 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:04:22,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:22,215 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:04:22,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:22,321 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:04:22,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22 WrapperNode [2019-11-26 02:04:22,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:22,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:22,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:04:22,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:04:22,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:22,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:04:22,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:04:22,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:04:22,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... [2019-11-26 02:04:22,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:04:22,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:04:22,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:04:22,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:04:22,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/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 [2019-11-26 02:04:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:04:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:04:22,570 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:04:22,571 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:04:22,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:22 BoogieIcfgContainer [2019-11-26 02:04:22,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:04:22,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:04:22,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:04:22,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:04:22,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:04:21" (1/3) ... [2019-11-26 02:04:22,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcb6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:22, skipping insertion in model container [2019-11-26 02:04:22,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:22" (2/3) ... [2019-11-26 02:04:22,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcb6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:22, skipping insertion in model container [2019-11-26 02:04:22,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:22" (3/3) ... [2019-11-26 02:04:22,581 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-26 02:04:22,588 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:04:22,592 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:04:22,599 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:04:22,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:04:22,616 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:04:22,617 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:04:22,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:04:22,617 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:04:22,617 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:04:22,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:04:22,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:04:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-11-26 02:04:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:04:22,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:22,632 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:04:22,632 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:04:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-26 02:04:22,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:22,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150747269] [2019-11-26 02:04:22,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:04:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:04:22,738 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:04:22,739 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:04:22,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:04:22 BoogieIcfgContainer [2019-11-26 02:04:22,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:04:22,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:04:22,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:04:22,752 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:04:22,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:22" (3/4) ... [2019-11-26 02:04:22,755 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:04:22,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:04:22,757 INFO L168 Benchmark]: Toolchain (without parser) took 771.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:22,758 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:22,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:22,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.03 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. [2019-11-26 02:04:22,760 INFO L168 Benchmark]: Boogie Preprocessor took 12.68 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. [2019-11-26 02:04:22,760 INFO L168 Benchmark]: RCFGBuilder took 207.03 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:22,761 INFO L168 Benchmark]: TraceAbstraction took 179.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:22,761 INFO L168 Benchmark]: Witness Printer took 3.40 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. [2019-11-26 02:04:22,764 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.03 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 12.68 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 207.03 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 179.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.40 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, 6 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=6occurred 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 0.1.24-6b5699a [2019-11-26 02:04:24,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:04:24,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:04:24,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:04:24,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:04:24,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:04:24,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:04:24,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:04:24,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:04:24,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:04:24,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:04:24,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:04:24,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:04:24,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:04:24,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:04:24,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:04:24,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:04:24,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:04:24,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:04:24,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:04:24,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:04:24,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:04:24,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:04:24,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:04:24,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:04:24,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:04:24,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:04:24,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:04:24,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:04:24,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:04:24,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:04:24,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:04:24,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:04:24,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:04:24,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:04:24,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:04:24,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:04:24,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:04:24,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:04:24,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:04:24,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:04:24,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:04:24,688 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:04:24,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:04:24,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:04:24,689 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:04:24,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:04:24,689 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:04:24,689 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:04:24,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:04:24,690 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:04:24,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:04:24,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:04:24,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:04:24,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:04:24,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:04:24,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:04:24,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:04:24,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:04:24,692 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:04:24,695 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:04:24,695 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:04:24,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:04:24,696 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:04:24,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:04:24,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:04:24,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:04:24,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:04:24,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:04:24,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:04:24,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:04:24,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:04:24,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:04:24,699 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:04:24,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:04:24,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:04:24,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:04:24,700 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan 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 -> Taipan 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 [2019-11-26 02:04:24,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:04:24,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:04:24,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:04:24,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:04:24,976 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:04:24,976 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-26 02:04:25,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/a1f01df06/69823b8f078b460c8398486715a81aca/FLAGeb845dcb2 [2019-11-26 02:04:25,387 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:04:25,387 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-26 02:04:25,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/a1f01df06/69823b8f078b460c8398486715a81aca/FLAGeb845dcb2 [2019-11-26 02:04:25,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/data/a1f01df06/69823b8f078b460c8398486715a81aca [2019-11-26 02:04:25,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:04:25,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:04:25,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:25,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:04:25,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:04:25,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:25" (1/1) ... [2019-11-26 02:04:25,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcbaa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:25, skipping insertion in model container [2019-11-26 02:04:25,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:25" (1/1) ... [2019-11-26 02:04:25,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:04:25,821 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:04:25,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:25,989 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:04:26,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:26,015 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:04:26,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26 WrapperNode [2019-11-26 02:04:26,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:26,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:26,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:04:26,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:04:26,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:26,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:04:26,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:04:26,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:04:26,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... [2019-11-26 02:04:26,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:04:26,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:04:26,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:04:26,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:04:26,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/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 [2019-11-26 02:04:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:04:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:04:26,716 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:04:26,717 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:04:26,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:26 BoogieIcfgContainer [2019-11-26 02:04:26,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:04:26,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:04:26,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:04:26,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:04:26,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:04:25" (1/3) ... [2019-11-26 02:04:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acb28cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:26, skipping insertion in model container [2019-11-26 02:04:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:26" (2/3) ... [2019-11-26 02:04:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acb28cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:26, skipping insertion in model container [2019-11-26 02:04:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:26" (3/3) ... [2019-11-26 02:04:26,725 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-26 02:04:26,733 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:04:26,738 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:04:26,748 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:04:26,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:04:26,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:04:26,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:04:26,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:04:26,769 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:04:26,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:04:26,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:04:26,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:04:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-26 02:04:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:04:26,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:26,786 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:04:26,786 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:04:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-26 02:04:26,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:04:26,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649645261] [2019-11-26 02:04:26,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/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 [2019-11-26 02:04:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:04:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:04:26,994 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:04:26,994 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:04:27,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:04:27,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:04:27 BoogieIcfgContainer [2019-11-26 02:04:27,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:04:27,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:04:27,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:04:27,211 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:04:27,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:26" (3/4) ... [2019-11-26 02:04:27,213 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:04:27,241 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57710b4a-8426-4828-9e61-59bbf97f2f17/bin/utaipan/witness.graphml [2019-11-26 02:04:27,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:04:27,243 INFO L168 Benchmark]: Toolchain (without parser) took 1452.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -164.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:27,243 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:27,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.26 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:27,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -212.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:27,245 INFO L168 Benchmark]: Boogie Preprocessor took 19.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:27,246 INFO L168 Benchmark]: RCFGBuilder took 604.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:27,247 INFO L168 Benchmark]: TraceAbstraction took 491.13 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:27,247 INFO L168 Benchmark]: Witness Printer took 31.06 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. [2019-11-26 02:04:27,250 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 223.26 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 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 77.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -212.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 604.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 491.13 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Witness Printer took 31.06 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, 9 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=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 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...