./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:10:24,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:10:24,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:10:24,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:10:24,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:10:24,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:10:24,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:10:24,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:10:24,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:10:24,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:10:24,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:10:24,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:10:24,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:10:24,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:10:24,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:10:24,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:10:24,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:10:24,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:10:24,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:10:24,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:10:24,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:10:24,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:10:24,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:10:24,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:10:24,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:10:24,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:10:24,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:10:24,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:10:24,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:10:24,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:10:24,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:10:24,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:10:24,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:10:24,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:10:24,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:10:24,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:10:24,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:10:24,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:10:24,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:10:24,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:10:24,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:10:24,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:10:24,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:10:24,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:10:24,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:10:24,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:10:24,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:10:24,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:10:24,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:10:24,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:10:24,500 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:10:24,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:10:24,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:10:24,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:10:24,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:10:24,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:10:24,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:10:24,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:10:24,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:10:24,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:10:24,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:10:24,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:10:24,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:10:24,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:10:24,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:10:24,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:10:24,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:10:24,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:10:24,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:10:24,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:10:24,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:10:24,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:10:24,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:10:24,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:10:24,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:10:24,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:10:24,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 [2021-12-17 21:10:24,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:10:24,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:10:24,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:10:24,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:10:24,755 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:10:24,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-12-17 21:10:24,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d605b8e/4f782581107e44e1bdcac47e4c092f2c/FLAG8d19adcd4 [2021-12-17 21:10:25,228 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:10:25,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-12-17 21:10:25,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d605b8e/4f782581107e44e1bdcac47e4c092f2c/FLAG8d19adcd4 [2021-12-17 21:10:25,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d605b8e/4f782581107e44e1bdcac47e4c092f2c [2021-12-17 21:10:25,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:10:25,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:10:25,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:10:25,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:10:25,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:10:25,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa6a0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25, skipping insertion in model container [2021-12-17 21:10:25,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:10:25,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:10:25,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-12-17 21:10:25,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-12-17 21:10:25,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:10:25,854 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:10:25,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-12-17 21:10:25,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-12-17 21:10:25,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:10:25,901 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:10:25,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25 WrapperNode [2021-12-17 21:10:25,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:10:25,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:10:25,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:10:25,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:10:25,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,939 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2021-12-17 21:10:25,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:10:25,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:10:25,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:10:25,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:10:25,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:10:25,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:10:25,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:10:25,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:10:25,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (1/1) ... [2021-12-17 21:10:25,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:10:25,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:10:26,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 21:10:26,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 21:10:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:10:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-17 21:10:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-17 21:10:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:10:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:10:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:10:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 21:10:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 21:10:26,095 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:10:26,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:10:26,368 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:10:26,375 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:10:26,375 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 21:10:26,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:10:26 BoogieIcfgContainer [2021-12-17 21:10:26,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:10:26,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:10:26,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:10:26,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:10:26,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:10:25" (1/3) ... [2021-12-17 21:10:26,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e294c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:10:26, skipping insertion in model container [2021-12-17 21:10:26,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:25" (2/3) ... [2021-12-17 21:10:26,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e294c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:10:26, skipping insertion in model container [2021-12-17 21:10:26,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:10:26" (3/3) ... [2021-12-17 21:10:26,387 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_1-2a.c.cil.c [2021-12-17 21:10:26,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:10:26,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:10:26,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:10:26,433 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 21:10:26,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:10:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 21:10:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 21:10:26,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:10:26,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:10:26,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:10:26,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:10:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-17 21:10:26,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:10:26,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525081019] [2021-12-17 21:10:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:10:26,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:10:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:10:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:10:26,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:10:26,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525081019] [2021-12-17 21:10:26,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525081019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:10:26,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:10:26,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 21:10:26,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423293593] [2021-12-17 21:10:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:10:26,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 21:10:26,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:10:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 21:10:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 21:10:26,630 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:10:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:10:26,661 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-12-17 21:10:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 21:10:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-17 21:10:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:10:26,672 INFO L225 Difference]: With dead ends: 157 [2021-12-17 21:10:26,673 INFO L226 Difference]: Without dead ends: 74 [2021-12-17 21:10:26,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 21:10:26,679 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:10:26,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:10:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-17 21:10:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-17 21:10:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 21:10:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-12-17 21:10:26,714 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-12-17 21:10:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:10:26,714 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-12-17 21:10:26,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:10:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-12-17 21:10:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 21:10:26,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:10:26,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:10:26,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:10:26,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:10:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:10:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-17 21:10:26,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:10:26,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294786926] [2021-12-17 21:10:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:10:26,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:10:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 21:10:26,733 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 21:10:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 21:10:26,755 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 21:10:26,756 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 21:10:26,757 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-17 21:10:26,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-17 21:10:26,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:10:26,763 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 21:10:26,765 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 21:10:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 09:10:26 BoogieIcfgContainer [2021-12-17 21:10:26,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 21:10:26,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 21:10:26,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 21:10:26,788 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 21:10:26,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:10:26" (3/4) ... [2021-12-17 21:10:26,791 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 21:10:26,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 21:10:26,792 INFO L158 Benchmark]: Toolchain (without parser) took 1206.24ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 75.8MB in the beginning and 87.1MB in the end (delta: -11.3MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-17 21:10:26,793 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 21:10:26,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.31ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 77.6MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 21:10:26,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.85ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 75.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 21:10:26,794 INFO L158 Benchmark]: Boogie Preprocessor took 30.87ms. Allocated memory is still 107.0MB. Free memory was 75.5MB in the beginning and 73.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 21:10:26,795 INFO L158 Benchmark]: RCFGBuilder took 404.76ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 59.0MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 21:10:26,795 INFO L158 Benchmark]: TraceAbstraction took 409.20ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 58.3MB in the beginning and 87.1MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 21:10:26,795 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 130.0MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 21:10:26,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.31ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 77.6MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.85ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 75.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.87ms. Allocated memory is still 107.0MB. Free memory was 75.5MB in the beginning and 73.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.76ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 59.0MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 409.20ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 58.3MB in the beginning and 87.1MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 130.0MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 116 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 [2021-12-17 21:10:26,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:10:28,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:10:28,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:10:28,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:10:28,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:10:28,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:10:28,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:10:28,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:10:28,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:10:28,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:10:28,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:10:28,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:10:28,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:10:28,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:10:28,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:10:28,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:10:28,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:10:28,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:10:28,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:10:28,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:10:28,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:10:28,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:10:28,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:10:28,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:10:28,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:10:28,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:10:28,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:10:28,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:10:28,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:10:28,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:10:28,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:10:28,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:10:28,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:10:28,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:10:28,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:10:28,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:10:28,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:10:28,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:10:28,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:10:28,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:10:28,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:10:28,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 21:10:28,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:10:28,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:10:28,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:10:28,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:10:28,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:10:28,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:10:28,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:10:28,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:10:28,858 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:10:28,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:10:28,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:10:28,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:10:28,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:10:28,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:10:28,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:10:28,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:10:28,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 21:10:28,860 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 21:10:28,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 21:10:28,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:10:28,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:10:28,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:10:28,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:10:28,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:10:28,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:10:28,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:10:28,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:10:28,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:10:28,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:10:28,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:10:28,867 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 21:10:28,868 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 21:10:28,868 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:10:28,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:10:28,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:10:28,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:10:28,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 21:10:28,869 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 [2021-12-17 21:10:29,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:10:29,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:10:29,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:10:29,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:10:29,227 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:10:29,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-12-17 21:10:29,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ce55c86/cbb95e9c20cd441f92bd403b960308d6/FLAGeabe57961 [2021-12-17 21:10:29,773 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:10:29,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-12-17 21:10:29,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ce55c86/cbb95e9c20cd441f92bd403b960308d6/FLAGeabe57961 [2021-12-17 21:10:30,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ce55c86/cbb95e9c20cd441f92bd403b960308d6 [2021-12-17 21:10:30,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:10:30,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:10:30,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:10:30,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:10:30,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:10:30,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9fdca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30, skipping insertion in model container [2021-12-17 21:10:30,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:10:30,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:10:30,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-12-17 21:10:30,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-12-17 21:10:30,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:10:30,549 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:10:30,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-12-17 21:10:30,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-12-17 21:10:30,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:10:30,643 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:10:30,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30 WrapperNode [2021-12-17 21:10:30,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:10:30,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:10:30,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:10:30,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:10:30,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,706 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-12-17 21:10:30,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:10:30,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:10:30,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:10:30,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:10:30,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:10:30,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:10:30,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:10:30,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:10:30,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (1/1) ... [2021-12-17 21:10:30,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:10:30,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:10:30,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 21:10:30,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 21:10:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:10:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 21:10:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-17 21:10:30,850 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-17 21:10:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:10:30,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:10:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 21:10:30,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 21:10:30,955 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:10:30,957 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:10:33,501 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:10:33,507 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:10:33,508 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 21:10:33,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:10:33 BoogieIcfgContainer [2021-12-17 21:10:33,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:10:33,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:10:33,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:10:33,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:10:33,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:10:30" (1/3) ... [2021-12-17 21:10:33,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a69a6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:10:33, skipping insertion in model container [2021-12-17 21:10:33,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:10:30" (2/3) ... [2021-12-17 21:10:33,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a69a6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:10:33, skipping insertion in model container [2021-12-17 21:10:33,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:10:33" (3/3) ... [2021-12-17 21:10:33,518 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_1-2a.c.cil.c [2021-12-17 21:10:33,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:10:33,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:10:33,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:10:33,569 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 21:10:33,569 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:10:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 21:10:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 21:10:33,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:10:33,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:10:33,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:10:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:10:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-17 21:10:33,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 21:10:33,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778392378] [2021-12-17 21:10:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:10:33,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 21:10:33,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 21:10:33,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 21:10:33,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 21:10:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:10:34,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 21:10:34,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:10:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:10:34,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:10:34,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 21:10:34,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778392378] [2021-12-17 21:10:34,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778392378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:10:34,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:10:34,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 21:10:34,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022974347] [2021-12-17 21:10:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:10:34,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 21:10:34,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 21:10:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 21:10:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 21:10:34,139 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:10:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:10:34,191 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-12-17 21:10:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 21:10:34,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-17 21:10:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:10:34,202 INFO L225 Difference]: With dead ends: 157 [2021-12-17 21:10:34,203 INFO L226 Difference]: Without dead ends: 74 [2021-12-17 21:10:34,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 21:10:34,226 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:10:34,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:10:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-17 21:10:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-17 21:10:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 21:10:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-12-17 21:10:34,261 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-12-17 21:10:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:10:34,261 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-12-17 21:10:34,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:10:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-12-17 21:10:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 21:10:34,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:10:34,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:10:34,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-17 21:10:34,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 21:10:34,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:10:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:10:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-17 21:10:34,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 21:10:34,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767337257] [2021-12-17 21:10:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:10:34,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 21:10:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 21:10:34,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 21:10:34,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 21:15:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 21:15:41,087 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 21:18:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 21:18:40,828 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-17 21:18:40,828 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 21:18:40,830 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-17 21:18:40,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-17 21:18:40,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 21:18:41,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 21:18:41,036 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 21:18:41,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 21:18:41,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 09:18:41 BoogieIcfgContainer [2021-12-17 21:18:41,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 21:18:41,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 21:18:41,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 21:18:41,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 21:18:41,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:10:33" (3/4) ... [2021-12-17 21:18:41,070 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 21:18:41,113 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 21:18:41,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 21:18:41,114 INFO L158 Benchmark]: Toolchain (without parser) took 490837.34ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.6MB in the beginning and 41.0MB in the end (delta: -14.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,116 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 21:18:41,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.60ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.4MB in the beginning and 40.3MB in the end (delta: -13.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.17ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 38.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,117 INFO L158 Benchmark]: Boogie Preprocessor took 59.73ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 36.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,117 INFO L158 Benchmark]: RCFGBuilder took 2742.46ms. Allocated memory is still 60.8MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: -38.9kB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,122 INFO L158 Benchmark]: TraceAbstraction took 487553.09ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 26.1MB in the end (delta: 9.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,122 INFO L158 Benchmark]: Witness Printer took 46.91ms. Allocated memory is still 60.8MB. Free memory was 26.1MB in the beginning and 41.0MB in the end (delta: -14.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-12-17 21:18:41,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.60ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.4MB in the beginning and 40.3MB in the end (delta: -13.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.17ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 38.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.73ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 36.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2742.46ms. Allocated memory is still 60.8MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: -38.9kB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 487553.09ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 26.1MB in the end (delta: 9.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Witness Printer took 46.91ms. Allocated memory is still 60.8MB. Free memory was 26.1MB in the beginning and 41.0MB in the end (delta: -14.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9765594601631165, result=1.3917515277862549, x=0.9765594601631165] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9765594601631165, result=1.3917515277862549, x=0.9765594601631165] [L48] reach_error() VAL [IN=0.9765594601631165, result=1.3917515277862549, x=0.9765594601631165] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 487.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 116 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 306.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-17 21:18:41,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE