./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.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/floats-cbmc-regression/float-no-simp1.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 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:25:26,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:25:26,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:25:26,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:25:26,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:25:26,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:25:26,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:25:26,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:25:26,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:25:26,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:25:26,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:25:26,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:25:26,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:25:26,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:25:26,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:25:26,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:25:26,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:25:26,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:25:26,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:25:26,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:25:26,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:25:26,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:25:26,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:25:26,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:25:26,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:25:26,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:25:26,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:25:26,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:25:26,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:25:26,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:25:26,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:25:26,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:25:26,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:25:26,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:25:26,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:25:26,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:25:26,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:25:26,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:25:26,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:25:26,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:25:26,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:25:26,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:25:26,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:25:26,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:25:26,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:25:26,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:25:26,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:25:26,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:25:26,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:25:26,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:25:26,406 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:25:26,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:25:26,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:25:26,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:25:26,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:25:26,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:25:26,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:25:26,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:25:26,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:25:26,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:25:26,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:25:26,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:25:26,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:25:26,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:25:26,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:25:26,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:25:26,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:25:26,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:25:26,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:25:26,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:25:26,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:25:26,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:25:26,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:25:26,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:25:26,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:25:26,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:25:26,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 [2021-12-15 23:25:26,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:25:26,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:25:26,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:25:26,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:25:26,664 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:25:26,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-12-15 23:25:26,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e2e80da/eabb8677e0f540578234d2791081d983/FLAGd642e003c [2021-12-15 23:25:27,053 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:25:27,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-12-15 23:25:27,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e2e80da/eabb8677e0f540578234d2791081d983/FLAGd642e003c [2021-12-15 23:25:27,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e2e80da/eabb8677e0f540578234d2791081d983 [2021-12-15 23:25:27,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:25:27,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:25:27,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:25:27,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:25:27,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:25:27,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1ac945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27, skipping insertion in model container [2021-12-15 23:25:27,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:25:27,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:25:27,662 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/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-12-15 23:25:27,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:25:27,672 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:25:27,681 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/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-12-15 23:25:27,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:25:27,691 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:25:27,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27 WrapperNode [2021-12-15 23:25:27,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:25:27,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:25:27,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:25:27,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:25:27,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,718 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-12-15 23:25:27,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:25:27,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:25:27,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:25:27,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:25:27,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:25:27,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:25:27,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:25:27,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:25:27,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (1/1) ... [2021-12-15 23:25:27,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:25:27,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:25:27,764 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) [2021-12-15 23:25:27,775 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 [2021-12-15 23:25:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:25:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:25:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:25:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:25:27,842 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:25:27,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:25:27,894 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:25:27,899 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:25:27,899 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:25:27,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:27 BoogieIcfgContainer [2021-12-15 23:25:27,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:25:27,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:25:27,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:25:27,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:25:27,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:25:27" (1/3) ... [2021-12-15 23:25:27,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caf6654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:25:27, skipping insertion in model container [2021-12-15 23:25:27,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:27" (2/3) ... [2021-12-15 23:25:27,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caf6654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:25:27, skipping insertion in model container [2021-12-15 23:25:27,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:27" (3/3) ... [2021-12-15 23:25:27,906 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2021-12-15 23:25:27,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:25:27,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:25:27,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:25:27,953 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 [2021-12-15 23:25:27,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:25:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-12-15 23:25:27,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 23:25:27,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:25:27,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 23:25:27,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:25:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:25:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-15 23:25:27,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:25:27,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455479509] [2021-12-15 23:25:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:25:27,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:25:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:25:28,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:25:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:25:28,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:25:28,063 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:25:28,064 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:25:28,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:25:28,069 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-15 23:25:28,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:25:28,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:25:28 BoogieIcfgContainer [2021-12-15 23:25:28,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:25:28,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:25:28,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:25:28,089 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:25:28,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:27" (3/4) ... [2021-12-15 23:25:28,092 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:25:28,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:25:28,094 INFO L158 Benchmark]: Toolchain (without parser) took 580.01ms. Allocated memory is still 94.4MB. Free memory was 63.9MB in the beginning and 48.4MB in the end (delta: 15.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-12-15 23:25:28,095 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 94.4MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:25:28,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.72ms. Allocated memory is still 94.4MB. Free memory was 63.7MB in the beginning and 71.3MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:25:28,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.78ms. Allocated memory is still 94.4MB. Free memory was 71.3MB in the beginning and 70.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:25:28,098 INFO L158 Benchmark]: Boogie Preprocessor took 10.51ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 69.1MB in the end (delta: 915.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:25:28,102 INFO L158 Benchmark]: RCFGBuilder took 170.42ms. Allocated memory is still 94.4MB. Free memory was 69.1MB in the beginning and 61.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:25:28,103 INFO L158 Benchmark]: TraceAbstraction took 182.84ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 48.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 23:25:28,107 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 94.4MB. Free memory was 48.7MB in the beginning and 48.4MB in the end (delta: 304.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:25:28,130 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 94.4MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.72ms. Allocated memory is still 94.4MB. Free memory was 63.7MB in the beginning and 71.3MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.78ms. Allocated memory is still 94.4MB. Free memory was 71.3MB in the beginning and 70.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.51ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 69.1MB in the end (delta: 915.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 170.42ms. Allocated memory is still 94.4MB. Free memory was 69.1MB in the beginning and 61.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 182.84ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 48.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 94.4MB. Free memory was 48.7MB in the beginning and 48.4MB in the end (delta: 304.7kB). 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: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 9, overapproximation of to_real at line 10. Possible FailurePath: [L6] unsigned int i, j; [L7] double d; [L9] i=100.0 [L10] d=i [L11] j=d [L12] COND TRUE !(j==100) VAL [j=0] [L12] reach_error() VAL [j=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 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, 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 [2021-12-15 23:25:28,174 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/floats-cbmc-regression/float-no-simp1.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 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:25:30,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:25:30,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:25:30,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:25:30,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:25:30,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:25:30,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:25:30,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:25:30,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:25:30,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:25:30,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:25:30,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:25:30,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:25:30,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:25:30,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:25:30,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:25:30,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:25:30,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:25:30,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:25:30,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:25:30,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:25:30,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:25:30,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:25:30,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:25:30,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:25:30,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:25:30,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:25:30,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:25:30,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:25:30,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:25:30,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:25:30,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:25:30,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:25:30,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:25:30,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:25:30,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:25:30,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:25:30,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:25:30,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:25:30,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:25:30,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:25:30,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:25:30,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:25:30,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:25:30,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:25:30,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:25:30,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:25:30,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:25:30,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:25:30,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:25:30,213 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:25:30,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:25:30,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:25:30,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:25:30,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:25:30,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:25:30,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:25:30,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:25:30,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:25:30,219 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:25:30,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:25:30,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:25:30,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:25:30,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:25:30,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:25:30,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:25:30,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:25:30,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:25:30,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:25:30,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:25:30,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:25:30,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:25:30,222 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:25:30,227 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:25:30,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:25:30,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:25:30,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:25:30,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:25:30,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:25:30,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 [2021-12-15 23:25:30,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:25:30,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:25:30,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:25:30,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:25:30,551 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:25:30,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-12-15 23:25:30,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997ccaa72/b50afdc723284b2c9cadd95f5067465e/FLAGaecb5093c [2021-12-15 23:25:30,936 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:25:30,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-12-15 23:25:30,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997ccaa72/b50afdc723284b2c9cadd95f5067465e/FLAGaecb5093c [2021-12-15 23:25:31,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997ccaa72/b50afdc723284b2c9cadd95f5067465e [2021-12-15 23:25:31,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:25:31,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:25:31,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:25:31,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:25:31,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:25:31,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69010d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31, skipping insertion in model container [2021-12-15 23:25:31,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:25:31,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:25:31,709 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/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-12-15 23:25:31,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:25:31,745 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:25:31,757 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/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-12-15 23:25:31,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:25:31,797 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:25:31,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31 WrapperNode [2021-12-15 23:25:31,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:25:31,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:25:31,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:25:31,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:25:31,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,903 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-15 23:25:31,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:25:31,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:25:31,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:25:31,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:25:31,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:25:31,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:25:31,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:25:31,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:25:31,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (1/1) ... [2021-12-15 23:25:31,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:25:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:25:32,038 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) [2021-12-15 23:25:32,106 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 [2021-12-15 23:25:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:25:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:25:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:25:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:25:32,258 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:25:32,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:25:32,610 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:25:32,615 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:25:32,615 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:25:32,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:32 BoogieIcfgContainer [2021-12-15 23:25:32,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:25:32,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:25:32,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:25:32,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:25:32,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:25:31" (1/3) ... [2021-12-15 23:25:32,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60090dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:25:32, skipping insertion in model container [2021-12-15 23:25:32,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:31" (2/3) ... [2021-12-15 23:25:32,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60090dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:25:32, skipping insertion in model container [2021-12-15 23:25:32,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:32" (3/3) ... [2021-12-15 23:25:32,624 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2021-12-15 23:25:32,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:25:32,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:25:32,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:25:32,734 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 [2021-12-15 23:25:32,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:25:32,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-12-15 23:25:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 23:25:32,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:25:32,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 23:25:32,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:25:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:25:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-15 23:25:32,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:25:32,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935678778] [2021-12-15 23:25:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:25:32,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:25:32,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:25:32,804 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) [2021-12-15 23:25:32,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:25:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:25:32,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 23:25:32,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:25:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:25:33,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:25:33,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:25:33,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935678778] [2021-12-15 23:25:33,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935678778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:25:33,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:25:33,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 23:25:33,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827668118] [2021-12-15 23:25:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:25:33,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 23:25:33,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:25:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 23:25:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:25:33,084 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-15 23:25:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:25:33,095 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-12-15 23:25:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 23:25:33,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-12-15 23:25:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:25:33,105 INFO L225 Difference]: With dead ends: 11 [2021-12-15 23:25:33,106 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 23:25:33,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:25:33,112 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:25:33,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2021-12-15 23:25:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 23:25:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 23:25:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-15 23:25:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 23:25:33,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-12-15 23:25:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:25:33,134 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 23:25:33,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-15 23:25:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 23:25:33,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 23:25:33,138 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:25:33,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 23:25:33,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:25:33,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 23:25:33,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 23:25:33,356 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 23:25:33,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 23:25:33,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 23:25:33,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-12-15 23:25:33,357 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-15 23:25:33,357 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-12-15 23:25:33,358 INFO L858 garLoopResultBuilder]: For program point L4(lines 4 13) no Hoare annotation was computed. [2021-12-15 23:25:33,360 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-15 23:25:33,361 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:25:33,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:25:33 BoogieIcfgContainer [2021-12-15 23:25:33,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:25:33,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:25:33,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:25:33,367 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:25:33,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:32" (3/4) ... [2021-12-15 23:25:33,370 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 23:25:33,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-15 23:25:33,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-15 23:25:33,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-15 23:25:33,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 23:25:33,439 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 23:25:33,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:25:33,440 INFO L158 Benchmark]: Toolchain (without parser) took 2044.86ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 36.1MB in the beginning and 37.3MB in the end (delta: -1.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-12-15 23:25:33,440 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:25:33,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.32ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 26.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:25:33,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.59ms. Allocated memory is still 56.6MB. Free memory was 26.2MB in the beginning and 41.2MB in the end (delta: -15.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 23:25:33,441 INFO L158 Benchmark]: Boogie Preprocessor took 56.76ms. Allocated memory is still 56.6MB. Free memory was 41.2MB in the beginning and 40.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:25:33,441 INFO L158 Benchmark]: RCFGBuilder took 654.76ms. Allocated memory is still 56.6MB. Free memory was 40.1MB in the beginning and 32.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:25:33,442 INFO L158 Benchmark]: TraceAbstraction took 747.46ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 32.2MB in the beginning and 39.6MB in the end (delta: -7.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-12-15 23:25:33,442 INFO L158 Benchmark]: Witness Printer took 72.75ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 37.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:25:33,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.32ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 26.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.59ms. Allocated memory is still 56.6MB. Free memory was 26.2MB in the beginning and 41.2MB in the end (delta: -15.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.76ms. Allocated memory is still 56.6MB. Free memory was 41.2MB in the beginning and 40.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 654.76ms. Allocated memory is still 56.6MB. Free memory was 40.1MB in the beginning and 32.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 747.46ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 32.2MB in the beginning and 39.6MB in the end (delta: -7.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 72.75ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 37.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, 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, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 1 QuantifiedInterpolants, 14 SizeOfPredicates, 4 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-15 23:25:33,482 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 Result: TRUE