./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_6+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 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:08,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:08,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:08,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:08,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:08,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:08,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:08,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:08,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:08,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:08,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:08,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:08,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:08,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:08,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:08,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:08,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:08,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:08,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:08,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:08,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:08,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:08,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:08,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:08,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:08,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:08,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:08,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:08,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:08,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:08,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:08,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:08,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:08,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:08,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:08,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:08,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:08,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:08,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:08,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:08,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:08,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:19:08,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:08,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:08,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:08,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:08,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:08,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:08,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:08,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:08,929 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:08,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:08,930 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:08,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:19:08,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:08,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:08,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:08,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:08,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:08,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:08,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:08,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:08,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:08,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:08,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:08,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:08,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:08,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:08,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:08,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:08,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:19:08,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:19:08,933 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:08,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:08,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:08,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:08,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2021-12-22 13:19:09,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:09,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:09,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:09,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:09,175 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:09,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-12-22 13:19:09,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f285f292c/c1f7a715185a4559ad0b3be4f0eae538/FLAG9f3aeefdf [2021-12-22 13:19:09,614 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:09,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-12-22 13:19:09,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f285f292c/c1f7a715185a4559ad0b3be4f0eae538/FLAG9f3aeefdf [2021-12-22 13:19:09,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f285f292c/c1f7a715185a4559ad0b3be4f0eae538 [2021-12-22 13:19:09,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:09,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:09,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:09,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:09,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:09,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcd4cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09, skipping insertion in model container [2021-12-22 13:19:09,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:09,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:09,829 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_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-12-22 13:19:09,833 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_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-12-22 13:19:09,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:09,888 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:09,898 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_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-12-22 13:19:09,899 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_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-12-22 13:19:09,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:09,933 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:09,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09 WrapperNode [2021-12-22 13:19:09,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:09,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:09,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:09,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:09,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,960 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2021-12-22 13:19:09,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:09,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:09,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:09,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:09,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:09,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:09,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:09,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:09,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:10,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (1/1) ... [2021-12-22 13:19:10,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:10,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:10,033 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) [2021-12-22 13:19:10,052 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 [2021-12-22 13:19:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:19:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:10,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:10,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:10,109 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:10,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:10,331 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:10,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:10,345 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:10,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:10 BoogieIcfgContainer [2021-12-22 13:19:10,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:10,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:10,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:10,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:10,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:09" (1/3) ... [2021-12-22 13:19:10,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d0b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:10, skipping insertion in model container [2021-12-22 13:19:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:09" (2/3) ... [2021-12-22 13:19:10,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d0b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:10, skipping insertion in model container [2021-12-22 13:19:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:10" (3/3) ... [2021-12-22 13:19:10,353 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2021-12-22 13:19:10,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:10,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:10,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:10,416 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 [2021-12-22 13:19:10,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:10,439 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) [2021-12-22 13:19:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:10,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:10,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:10,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:10,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:10,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:10,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533136403] [2021-12-22 13:19:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:10,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:19:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:19:10,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:19:10,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533136403] [2021-12-22 13:19:10,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533136403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:19:10,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:19:10,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:19:10,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250069927] [2021-12-22 13:19:10,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:19:10,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:19:10,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:19:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:19:10,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:10,558 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) [2021-12-22 13:19:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:19:10,576 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-22 13:19:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:19:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 13:19:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:19:10,582 INFO L225 Difference]: With dead ends: 157 [2021-12-22 13:19:10,583 INFO L226 Difference]: Without dead ends: 74 [2021-12-22 13:19:10,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:10,587 INFO L933 BasicCegarLoop]: 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 [2021-12-22 13:19:10,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:19:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-22 13:19:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-22 13:19:10,612 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) [2021-12-22 13:19:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-22 13:19:10,614 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-22 13:19:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:19:10,614 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-22 13:19:10,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-22 13:19:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:10,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:10,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:10,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:19:10,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:19:10,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:10,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51765733] [2021-12-22 13:19:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:10,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:19:10,626 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 13:19:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:19:10,642 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 13:19:10,642 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 13:19:10,643 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 13:19:10,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 13:19:10,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:19:10,647 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 13:19:10,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:19:10,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:19:10 BoogieIcfgContainer [2021-12-22 13:19:10,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:19:10,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:19:10,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:19:10,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:19:10,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:10" (3/4) ... [2021-12-22 13:19:10,664 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 13:19:10,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:19:10,664 INFO L158 Benchmark]: Toolchain (without parser) took 1025.93ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 28.5kB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2021-12-22 13:19:10,665 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 26.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:10,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.53ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 57.7MB in the beginning and 102.8MB in the end (delta: -45.1MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:10,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.70ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:10,666 INFO L158 Benchmark]: Boogie Preprocessor took 31.34ms. Allocated memory is still 130.0MB. Free memory was 100.7MB in the beginning and 99.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:10,666 INFO L158 Benchmark]: RCFGBuilder took 354.35ms. Allocated memory is still 130.0MB. Free memory was 99.1MB in the beginning and 83.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-22 13:19:10,666 INFO L158 Benchmark]: TraceAbstraction took 312.29ms. Allocated memory is still 130.0MB. Free memory was 82.4MB in the beginning and 58.0MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-22 13:19:10,667 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 130.0MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:10,668 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 90.2MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 26.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.53ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 57.7MB in the beginning and 102.8MB in the end (delta: -45.1MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.70ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.34ms. Allocated memory is still 130.0MB. Free memory was 100.7MB in the beginning and 99.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 354.35ms. Allocated memory is still 130.0MB. Free memory was 99.1MB in the beginning and 83.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 312.29ms. Allocated memory is still 130.0MB. Free memory was 82.4MB in the beginning and 58.0MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 130.0MB. Free memory is still 58.0MB. 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 < 1.399f) 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, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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, 117 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, 117 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 13:19:10,694 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_6+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 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:12,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:12,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:12,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:12,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:12,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:12,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:12,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:12,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:12,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:12,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:12,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:12,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:12,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:12,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:12,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:12,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:12,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:12,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:12,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:12,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:12,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:12,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:12,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:12,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:12,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:12,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:12,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:12,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:12,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:12,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:12,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:12,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:12,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:12,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:12,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:12,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:12,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:12,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:12,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:12,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:12,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 13:19:12,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:12,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:12,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:12,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:12,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:12,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:12,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:12,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:12,307 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:12,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:12,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:12,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:12,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:12,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:12,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:12,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:12,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:12,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:12,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:12,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:12,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:12,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:12,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:12,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:12,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 13:19:12,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2021-12-22 13:19:12,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:12,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:12,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:12,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:12,552 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:12,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-12-22 13:19:12,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e26ea25a/9eb58fe66c994340976cbf51e5f7ea00/FLAGa26581fad [2021-12-22 13:19:12,970 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:12,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-12-22 13:19:12,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e26ea25a/9eb58fe66c994340976cbf51e5f7ea00/FLAGa26581fad [2021-12-22 13:19:12,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e26ea25a/9eb58fe66c994340976cbf51e5f7ea00 [2021-12-22 13:19:12,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:12,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:12,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:12,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:12,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:12,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:12" (1/1) ... [2021-12-22 13:19:12,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2026de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:12, skipping insertion in model container [2021-12-22 13:19:12,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:12" (1/1) ... [2021-12-22 13:19:12,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:13,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:13,132 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_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-12-22 13:19:13,138 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_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-12-22 13:19:13,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:13,201 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:13,224 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_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-12-22 13:19:13,228 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_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-12-22 13:19:13,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:13,266 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:13,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13 WrapperNode [2021-12-22 13:19:13,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:13,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:13,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:13,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:13,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,317 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2021-12-22 13:19:13,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:13,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:13,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:13,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:13,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:13,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:13,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:13,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:13,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (1/1) ... [2021-12-22 13:19:13,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:13,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:13,388 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) [2021-12-22 13:19:13,408 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 [2021-12-22 13:19:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 13:19:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:13,499 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:13,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:15,960 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:15,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:15,964 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:15,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:15 BoogieIcfgContainer [2021-12-22 13:19:15,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:15,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:15,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:15,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:15,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:12" (1/3) ... [2021-12-22 13:19:15,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5f690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:15, skipping insertion in model container [2021-12-22 13:19:15,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:13" (2/3) ... [2021-12-22 13:19:15,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5f690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:15, skipping insertion in model container [2021-12-22 13:19:15,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:15" (3/3) ... [2021-12-22 13:19:15,970 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2021-12-22 13:19:15,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:15,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:16,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:16,008 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 [2021-12-22 13:19:16,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:16,019 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) [2021-12-22 13:19:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:16,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:16,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:16,022 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:16,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:19:16,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980091643] [2021-12-22 13:19:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:16,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:19:16,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:19:16,036 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) [2021-12-22 13:19:16,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 13:19:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:19:16,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 13:19:16,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:19:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:19:16,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:19:16,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 13:19:16,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980091643] [2021-12-22 13:19:16,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980091643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:19:16,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:19:16,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:19:16,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042684533] [2021-12-22 13:19:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:19:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:19:16,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 13:19:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:19:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:16,469 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) [2021-12-22 13:19:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:19:16,489 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-22 13:19:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:19:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 13:19:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:19:16,500 INFO L225 Difference]: With dead ends: 157 [2021-12-22 13:19:16,509 INFO L226 Difference]: Without dead ends: 74 [2021-12-22 13:19:16,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:16,529 INFO L933 BasicCegarLoop]: 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 [2021-12-22 13:19:16,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:19:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-22 13:19:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-22 13:19:16,562 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) [2021-12-22 13:19:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-22 13:19:16,572 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-22 13:19:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:19:16,572 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-22 13:19:16,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-22 13:19:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:16,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:16,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:16,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 13:19:16,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 13:19:16,788 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:19:16,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:19:16,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512690197] [2021-12-22 13:19:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:16,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:19:16,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:19:16,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 13:19:16,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process