./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_5+soft_float_1-3a.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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:43:19,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:43:19,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:43:19,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:43:19,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:43:19,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:43:19,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:43:19,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:43:19,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:43:19,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:43:19,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:43:19,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:43:19,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:43:19,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:43:19,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:43:19,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:43:19,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:43:19,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:43:19,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:43:19,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:43:19,750 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:43:19,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:43:19,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:43:19,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:43:19,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:43:19,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:43:19,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:43:19,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:43:19,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:43:19,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:43:19,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:43:19,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:43:19,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:43:19,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:43:19,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:43:19,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:43:19,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:43:19,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:43:19,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:43:19,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:43:19,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:43:19,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:43:19,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:43:19,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:43:19,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:43:19,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:43:19,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:43:19,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:43:19,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:43:19,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:43:19,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:43:19,799 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:43:19,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:43:19,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:43:19,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:43:19,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:43:19,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:43:19,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:43:19,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:43:19,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:43:19,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:43:19,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:43:19,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:43:19,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:43:19,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:43:19,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:43:19,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:43:19,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:43:19,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:43:19,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:43:19,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2022-07-19 20:43:20,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:43:20,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:43:20,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:43:20,072 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:43:20,072 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:43:20,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-07-19 20:43:20,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e67e89b9/f430a92745db47b09eaffe0be1612db2/FLAG17be32d7e [2022-07-19 20:43:20,520 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:43:20,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-07-19 20:43:20,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e67e89b9/f430a92745db47b09eaffe0be1612db2/FLAG17be32d7e [2022-07-19 20:43:20,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e67e89b9/f430a92745db47b09eaffe0be1612db2 [2022-07-19 20:43:20,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:43:20,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:43:20,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:43:20,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:43:20,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:43:20,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:43:20" (1/1) ... [2022-07-19 20:43:20,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47740161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:20, skipping insertion in model container [2022-07-19 20:43:20,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:43:20" (1/1) ... [2022-07-19 20:43:20,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:43:20,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:43:21,171 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_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-07-19 20:43:21,179 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_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-07-19 20:43:21,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:43:21,270 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:43:21,291 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_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-07-19 20:43:21,294 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_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-07-19 20:43:21,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:43:21,327 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:43:21,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21 WrapperNode [2022-07-19 20:43:21,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:43:21,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:43:21,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:43:21,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:43:21,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,379 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 234 [2022-07-19 20:43:21,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:43:21,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:43:21,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:43:21,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:43:21,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:43:21,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:43:21,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:43:21,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:43:21,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (1/1) ... [2022-07-19 20:43:21,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:43:21,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:43:21,468 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) [2022-07-19 20:43:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:43:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:43:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:43:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:43:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:43:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:43:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:43:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:43:21,495 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 [2022-07-19 20:43:21,618 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:43:21,620 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:43:21,879 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:43:21,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:43:21,885 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:43:21,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:43:21 BoogieIcfgContainer [2022-07-19 20:43:21,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:43:21,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:43:21,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:43:21,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:43:21,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:43:20" (1/3) ... [2022-07-19 20:43:21,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c026b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:43:21, skipping insertion in model container [2022-07-19 20:43:21,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:21" (2/3) ... [2022-07-19 20:43:21,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c026b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:43:21, skipping insertion in model container [2022-07-19 20:43:21,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:43:21" (3/3) ... [2022-07-19 20:43:21,905 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2022-07-19 20:43:21,916 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:43:21,916 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:43:21,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:43:21,983 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13eddc62, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4faeb1c0 [2022-07-19 20:43:21,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:43:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 101 states have (on average 1.702970297029703) internal successors, (172), 105 states have internal predecessors, (172), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 20:43:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:43:21,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:43:21,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:43:21,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:43:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:43:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-19 20:43:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:43:22,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636677790] [2022-07-19 20:43:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:43:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:43:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:43:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:43:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:43:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636677790] [2022-07-19 20:43:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636677790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:43:22,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:43:22,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:43:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904673059] [2022-07-19 20:43:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:43:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:43:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:43:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:43:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:43:22,153 INFO L87 Difference]: Start difference. First operand has 115 states, 101 states have (on average 1.702970297029703) internal successors, (172), 105 states have internal predecessors, (172), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-07-19 20:43:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:43:22,194 INFO L93 Difference]: Finished difference Result 225 states and 381 transitions. [2022-07-19 20:43:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:43:22,196 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 [2022-07-19 20:43:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:43:22,204 INFO L225 Difference]: With dead ends: 225 [2022-07-19 20:43:22,204 INFO L226 Difference]: Without dead ends: 108 [2022-07-19 20:43:22,210 INFO L412 NwaCegarLoop]: 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 [2022-07-19 20:43:22,214 INFO L413 NwaCegarLoop]: 170 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, 170 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 [2022-07-19 20:43:22,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:43:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-19 20:43:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-07-19 20:43:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 98 states have internal predecessors, (144), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:43:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 161 transitions. [2022-07-19 20:43:22,260 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 161 transitions. Word has length 7 [2022-07-19 20:43:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:43:22,261 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 161 transitions. [2022-07-19 20:43:22,261 INFO L496 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) [2022-07-19 20:43:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 161 transitions. [2022-07-19 20:43:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:43:22,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:43:22,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:43:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:43:22,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:43:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:43:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-19 20:43:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:43:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742289985] [2022-07-19 20:43:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:43:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:43:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:43:22,289 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 20:43:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:43:22,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 20:43:22,322 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 20:43:22,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 20:43:22,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 20:43:22,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:43:22,328 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 20:43:22,330 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 20:43:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:43:22 BoogieIcfgContainer [2022-07-19 20:43:22,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 20:43:22,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 20:43:22,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 20:43:22,350 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 20:43:22,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:43:21" (3/4) ... [2022-07-19 20:43:22,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 20:43:22,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 20:43:22,354 INFO L158 Benchmark]: Toolchain (without parser) took 1425.49ms. Allocated memory is still 96.5MB. Free memory was 59.1MB in the beginning and 50.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-07-19 20:43:22,354 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:43:22,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.64ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 67.2MB in the end (delta: -8.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 20:43:22,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.59ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 64.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:43:22,359 INFO L158 Benchmark]: Boogie Preprocessor took 46.84ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 63.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:43:22,359 INFO L158 Benchmark]: RCFGBuilder took 459.19ms. Allocated memory is still 96.5MB. Free memory was 63.0MB in the beginning and 42.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 20:43:22,359 INFO L158 Benchmark]: TraceAbstraction took 460.92ms. Allocated memory is still 96.5MB. Free memory was 41.9MB in the beginning and 50.7MB in the end (delta: -8.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:43:22,359 INFO L158 Benchmark]: Witness Printer took 3.40ms. Allocated memory is still 96.5MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:43:22,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.64ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 67.2MB in the end (delta: -8.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.59ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 64.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.84ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 63.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.19ms. Allocated memory is still 96.5MB. Free memory was 63.0MB in the beginning and 42.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 460.92ms. Allocated memory is still 96.5MB. Free memory was 41.9MB in the beginning and 50.7MB in the end (delta: -8.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.40ms. Allocated memory is still 96.5MB. Free memory is still 50.7MB. 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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 < 1.3985f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: 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, 115 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 170 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, 170 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=115occurred 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 [2022-07-19 20:43:22,395 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_5+soft_float_1-3a.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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:43:24,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:43:24,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:43:24,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:43:24,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:43:24,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:43:24,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:43:24,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:43:24,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:43:24,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:43:24,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:43:24,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:43:24,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:43:24,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:43:24,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:43:24,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:43:24,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:43:24,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:43:24,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:43:24,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:43:24,303 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:43:24,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:43:24,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:43:24,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:43:24,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:43:24,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:43:24,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:43:24,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:43:24,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:43:24,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:43:24,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:43:24,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:43:24,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:43:24,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:43:24,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:43:24,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:43:24,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:43:24,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:43:24,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:43:24,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:43:24,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:43:24,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:43:24,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 20:43:24,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:43:24,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:43:24,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:43:24,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:43:24,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:43:24,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:43:24,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:43:24,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:43:24,357 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:43:24,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:43:24,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 20:43:24,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 20:43:24,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 20:43:24,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:43:24,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:43:24,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:43:24,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:43:24,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:43:24,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:43:24,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:43:24,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:43:24,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:43:24,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:43:24,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:43:24,361 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 20:43:24,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 20:43:24,361 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:43:24,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:43:24,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:43:24,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 20:43:24,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2022-07-19 20:43:24,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:43:24,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:43:24,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:43:24,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:43:24,602 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:43:24,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-07-19 20:43:24,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ed5e83c/90adf34be69940f1b6168bbf522da913/FLAG726abe380 [2022-07-19 20:43:25,020 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:43:25,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2022-07-19 20:43:25,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ed5e83c/90adf34be69940f1b6168bbf522da913/FLAG726abe380 [2022-07-19 20:43:25,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ed5e83c/90adf34be69940f1b6168bbf522da913 [2022-07-19 20:43:25,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:43:25,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:43:25,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:43:25,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:43:25,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:43:25,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ab171b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25, skipping insertion in model container [2022-07-19 20:43:25,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:43:25,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:43:25,604 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_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-07-19 20:43:25,608 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_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-07-19 20:43:25,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:43:25,693 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:43:25,722 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_5+soft_float_1-3a.c.cil.c[1998,2011] [2022-07-19 20:43:25,723 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_5+soft_float_1-3a.c.cil.c[2367,2380] [2022-07-19 20:43:25,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:43:25,775 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:43:25,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25 WrapperNode [2022-07-19 20:43:25,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:43:25,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:43:25,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:43:25,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:43:25,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,856 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-07-19 20:43:25,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:43:25,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:43:25,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:43:25,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:43:25,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:43:25,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:43:25,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:43:25,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:43:25,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (1/1) ... [2022-07-19 20:43:25,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:43:25,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:43:25,941 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) [2022-07-19 20:43:25,945 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 [2022-07-19 20:43:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:43:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 20:43:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:43:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:43:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:43:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:43:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:43:25,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:43:26,014 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:43:26,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:43:28,567 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:43:28,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:43:28,573 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:43:28,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:43:28 BoogieIcfgContainer [2022-07-19 20:43:28,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:43:28,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:43:28,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:43:28,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:43:28,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:43:25" (1/3) ... [2022-07-19 20:43:28,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405d2513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:43:28, skipping insertion in model container [2022-07-19 20:43:28,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:43:25" (2/3) ... [2022-07-19 20:43:28,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405d2513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:43:28, skipping insertion in model container [2022-07-19 20:43:28,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:43:28" (3/3) ... [2022-07-19 20:43:28,579 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2022-07-19 20:43:28,589 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:43:28,589 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:43:28,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:43:28,637 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71f451a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@296a083 [2022-07-19 20:43:28,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:43:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 20:43:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:43:28,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:43:28,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:43:28,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:43:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:43:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-19 20:43:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:43:28,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990632887] [2022-07-19 20:43:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:43:28,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:43:28,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:43:28,680 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) [2022-07-19 20:43:28,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 20:43:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:43:29,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 20:43:29,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:43:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:43:29,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:43:29,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 20:43:29,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990632887] [2022-07-19 20:43:29,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990632887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:43:29,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:43:29,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:43:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181308453] [2022-07-19 20:43:29,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:43:29,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:43:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 20:43:29,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:43:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:43:29,183 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-07-19 20:43:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:43:29,203 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-07-19 20:43:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:43:29,204 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 [2022-07-19 20:43:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:43:29,210 INFO L225 Difference]: With dead ends: 157 [2022-07-19 20:43:29,210 INFO L226 Difference]: Without dead ends: 74 [2022-07-19 20:43:29,213 INFO L412 NwaCegarLoop]: 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 [2022-07-19 20:43:29,215 INFO L413 NwaCegarLoop]: 117 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, 117 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 [2022-07-19 20:43:29,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:43:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-19 20:43:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-19 20:43:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:43:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-07-19 20:43:29,258 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-07-19 20:43:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:43:29,259 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-19 20:43:29,259 INFO L496 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) [2022-07-19 20:43:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-07-19 20:43:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:43:29,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:43:29,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:43:29,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 20:43:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 20:43:29,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:43:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:43:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-19 20:43:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:43:29,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665462981] [2022-07-19 20:43:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:43:29,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:43:29,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:43:29,489 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) [2022-07-19 20:43:29,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process