./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/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_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/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 0.1.25-f470102 [2019-12-07 21:53:39,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:53:39,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:53:39,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:53:39,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:53:39,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:53:39,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:53:39,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:53:39,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:53:39,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:53:39,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:53:39,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:53:39,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:53:39,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:53:39,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:53:39,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:53:39,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:53:39,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:53:39,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:53:39,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:53:39,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:53:39,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:53:39,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:53:39,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:53:39,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:53:39,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:53:39,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:53:39,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:53:39,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:53:39,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:53:39,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:53:39,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:53:39,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:53:39,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:53:39,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:53:39,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:53:39,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:53:39,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:53:39,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:53:39,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:53:39,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:53:39,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:53:39,278 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:53:39,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:53:39,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:53:39,278 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:53:39,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:53:39,279 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:53:39,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:53:39,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:53:39,280 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:53:39,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:53:39,280 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:53:39,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:53:39,282 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:53:39,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:53:39,282 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:53:39,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:53:39,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:53:39,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:53:39,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:53:39,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:53:39,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:53:39,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:53:39,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:53:39,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:53:39,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:53:39,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:53:39,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:53:39,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:53:39,284 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_c45c6fe6-a904-4052-a47f-f11e2726cd31/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 [2019-12-07 21:53:39,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:53:39,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:53:39,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:53:39,398 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:53:39,398 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:53:39,398 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-12-07 21:53:39,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/01510accf/6bdf3fbd597148558979446be29d51f3/FLAGba2abafd3 [2019-12-07 21:53:39,888 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:53:39,889 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-12-07 21:53:39,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/01510accf/6bdf3fbd597148558979446be29d51f3/FLAGba2abafd3 [2019-12-07 21:53:39,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/01510accf/6bdf3fbd597148558979446be29d51f3 [2019-12-07 21:53:39,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:53:39,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:53:39,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:53:39,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:53:39,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:53:39,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:53:39" (1/1) ... [2019-12-07 21:53:39,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374ca533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:39, skipping insertion in model container [2019-12-07 21:53:39,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:53:39" (1/1) ... [2019-12-07 21:53:39,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:53:39,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:53:40,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:53:40,022 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:53:40,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:53:40,072 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:53:40,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40 WrapperNode [2019-12-07 21:53:40,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:53:40,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:53:40,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:53:40,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:53:40,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:53:40,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:53:40,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:53:40,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:53:40,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... [2019-12-07 21:53:40,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:53:40,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:53:40,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:53:40,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:53:40,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/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 [2019-12-07 21:53:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:53:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:53:40,237 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:53:40,238 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 21:53:40,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:40 BoogieIcfgContainer [2019-12-07 21:53:40,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:53:40,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:53:40,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:53:40,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:53:40,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:53:39" (1/3) ... [2019-12-07 21:53:40,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f552e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:53:40, skipping insertion in model container [2019-12-07 21:53:40,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:40" (2/3) ... [2019-12-07 21:53:40,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f552e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:53:40, skipping insertion in model container [2019-12-07 21:53:40,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:40" (3/3) ... [2019-12-07 21:53:40,244 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-12-07 21:53:40,252 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:53:40,256 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:53:40,264 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:53:40,277 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:53:40,278 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:53:40,278 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:53:40,278 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:53:40,278 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:53:40,278 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:53:40,278 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:53:40,278 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:53:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-12-07 21:53:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 21:53:40,290 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:40,290 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 21:53:40,290 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:53:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:40,294 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-12-07 21:53:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:53:40,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98134273] [2019-12-07 21:53:40,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:53:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:53:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:53:40,378 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:53:40,378 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:53:40,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:53:40 BoogieIcfgContainer [2019-12-07 21:53:40,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:53:40,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:53:40,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:53:40,389 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:53:40,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:40" (3/4) ... [2019-12-07 21:53:40,391 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 21:53:40,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:53:40,393 INFO L168 Benchmark]: Toolchain (without parser) took 488.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 80.7 MB). Free memory was 940.7 MB in the beginning and 1.0 GB in the end (delta: -102.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:40,393 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:40,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 80.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:40,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:40,395 INFO L168 Benchmark]: Boogie Preprocessor took 11.10 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:40,395 INFO L168 Benchmark]: RCFGBuilder took 134.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:40,395 INFO L168 Benchmark]: TraceAbstraction took 149.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:40,396 INFO L168 Benchmark]: Witness Printer took 2.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:40,398 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 80.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.10 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 149.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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 0.1.25-f470102 [2019-12-07 21:53:41,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:53:41,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:53:41,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:53:41,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:53:41,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:53:41,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:53:41,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:53:41,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:53:41,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:53:41,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:53:41,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:53:41,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:53:41,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:53:41,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:53:41,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:53:41,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:53:41,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:53:41,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:53:41,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:53:41,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:53:41,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:53:41,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:53:41,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:53:41,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:53:41,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:53:41,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:53:41,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:53:41,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:53:41,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:53:41,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:53:41,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:53:41,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:53:41,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:53:41,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:53:41,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:53:41,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:53:41,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:53:41,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:53:41,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:53:41,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:53:41,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 21:53:41,809 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:53:41,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:53:41,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:53:41,810 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:53:41,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:53:41,810 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:53:41,810 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:53:41,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:53:41,811 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:53:41,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:53:41,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:53:41,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:53:41,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:53:41,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:53:41,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:53:41,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:53:41,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:53:41,813 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 21:53:41,813 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 21:53:41,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:53:41,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:53:41,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:53:41,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:53:41,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:53:41,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 21:53:41,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:53:41,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:53:41,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:53:41,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:53:41,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:53:41,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:53:41,815 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 21:53:41,816 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 21:53:41,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:53:41,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:53:41,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:53:41,816 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_c45c6fe6-a904-4052-a47f-f11e2726cd31/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 [2019-12-07 21:53:41,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:53:41,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:53:42,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:53:42,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:53:42,002 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:53:42,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-12-07 21:53:42,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/71faf237e/e9ecf2828d2340d68e0e3addcb0431bf/FLAG3cdb30ecf [2019-12-07 21:53:42,488 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:53:42,488 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-12-07 21:53:42,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/71faf237e/e9ecf2828d2340d68e0e3addcb0431bf/FLAG3cdb30ecf [2019-12-07 21:53:42,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/data/71faf237e/e9ecf2828d2340d68e0e3addcb0431bf [2019-12-07 21:53:42,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:53:42,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:53:42,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:53:42,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:53:42,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:53:42,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2fed62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42, skipping insertion in model container [2019-12-07 21:53:42,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:53:42,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:53:42,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:53:42,625 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:53:42,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:53:42,645 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:53:42,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42 WrapperNode [2019-12-07 21:53:42,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:53:42,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:53:42,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:53:42,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:53:42,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:53:42,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:53:42,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:53:42,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:53:42,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... [2019-12-07 21:53:42,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:53:42,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:53:42,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:53:42,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:53:42,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/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 [2019-12-07 21:53:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:53:42,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:53:43,253 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:53:43,254 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 21:53:43,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:43 BoogieIcfgContainer [2019-12-07 21:53:43,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:53:43,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:53:43,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:53:43,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:53:43,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:53:42" (1/3) ... [2019-12-07 21:53:43,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee95234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:53:43, skipping insertion in model container [2019-12-07 21:53:43,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:53:42" (2/3) ... [2019-12-07 21:53:43,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee95234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:53:43, skipping insertion in model container [2019-12-07 21:53:43,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:43" (3/3) ... [2019-12-07 21:53:43,259 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-12-07 21:53:43,265 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:53:43,269 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:53:43,276 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:53:43,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:53:43,291 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:53:43,291 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:53:43,291 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:53:43,291 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:53:43,291 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:53:43,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:53:43,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:53:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 21:53:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:53:43,303 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:53:43,304 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:53:43,304 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:53:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:53:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-12-07 21:53:43,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:53:43,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442076245] [2019-12-07 21:53:43,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/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 [2019-12-07 21:53:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:53:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:53:43,463 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 21:53:43,464 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:53:43,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 21:53:43,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:53:43 BoogieIcfgContainer [2019-12-07 21:53:43,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:53:43,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:53:43,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:53:43,690 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:53:43,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:53:43" (3/4) ... [2019-12-07 21:53:43,694 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:53:43,729 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c45c6fe6-a904-4052-a47f-f11e2726cd31/bin/utaipan/witness.graphml [2019-12-07 21:53:43,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:53:43,730 INFO L168 Benchmark]: Toolchain (without parser) took 1226.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -113.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:43,731 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:53:43,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.82 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:43,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:43,732 INFO L168 Benchmark]: Boogie Preprocessor took 15.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:43,732 INFO L168 Benchmark]: RCFGBuilder took 536.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:43,733 INFO L168 Benchmark]: TraceAbstraction took 433.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:43,733 INFO L168 Benchmark]: Witness Printer took 39.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:53:43,735 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 141.82 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 536.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 433.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * Witness Printer took 39.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. 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: 0.3s, 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...