./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_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-tmp.no-commuhash-c3fed41 [2021-12-16 02:37:28,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:37:28,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:37:28,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:37:28,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:37:28,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:37:28,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:37:28,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:37:28,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:37:28,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:37:28,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:37:28,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:37:28,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:37:28,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:37:28,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:37:28,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:37:28,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:37:28,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:37:28,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:37:28,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:37:28,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:37:28,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:37:28,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:37:28,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:37:28,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:37:28,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:37:28,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:37:28,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:37:28,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:37:28,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:37:28,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:37:28,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:37:28,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:37:28,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:37:28,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:37:28,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:37:28,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:37:28,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:37:28,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:37:28,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:37:28,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:37:28,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:37:28,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:37:28,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:37:28,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:37:28,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:37:28,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:37:28,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:37:28,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:37:28,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:37:28,921 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:37:28,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:37:28,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:37:28,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:37:28,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:37:28,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:37:28,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:37:28,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:37:28,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:37:28,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:37:28,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:37:28,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:37:28,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:37:28,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:37:28,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:37:28,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:37:28,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:37:28,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:37:28,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:37:28,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:37:28,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2021-12-16 02:37:29,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:37:29,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:37:29,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:37:29,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:37:29,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:37:29,160 INFO L432 ainManager$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 [2021-12-16 02:37:29,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ce1d7fd/26129995bf214a758e38c658105a41bf/FLAG49987f704 [2021-12-16 02:37:29,553 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:37:29,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2021-12-16 02:37:29,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ce1d7fd/26129995bf214a758e38c658105a41bf/FLAG49987f704 [2021-12-16 02:37:29,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ce1d7fd/26129995bf214a758e38c658105a41bf [2021-12-16 02:37:29,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:37:29,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:37:29,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:37:29,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:37:29,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:37:29,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:29" (1/1) ... [2021-12-16 02:37:29,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a4e53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:29, skipping insertion in model container [2021-12-16 02:37:29,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:29" (1/1) ... [2021-12-16 02:37:29,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:37:30,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:37:30,189 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] [2021-12-16 02:37:30,193 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] [2021-12-16 02:37:30,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:37:30,223 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:37:30,232 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] [2021-12-16 02:37:30,234 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] [2021-12-16 02:37:30,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:37:30,282 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:37:30,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30 WrapperNode [2021-12-16 02:37:30,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:37:30,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:37:30,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:37:30,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:37:30,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,319 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2021-12-16 02:37:30,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:37:30,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:37:30,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:37:30,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:37:30,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:37:30,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:37:30,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:37:30,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:37:30,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (1/1) ... [2021-12-16 02:37:30,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:37:30,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:37:30,384 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) [2021-12-16 02:37:30,389 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 [2021-12-16 02:37:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:37:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:37:30,413 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:37:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:37:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:37:30,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:37:30,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:37:30,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:37:30,510 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:37:30,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:37:30,734 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:37:30,740 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:37:30,740 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:37:30,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:30 BoogieIcfgContainer [2021-12-16 02:37:30,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:37:30,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:37:30,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:37:30,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:37:30,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:37:29" (1/3) ... [2021-12-16 02:37:30,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19d092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:30, skipping insertion in model container [2021-12-16 02:37:30,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:30" (2/3) ... [2021-12-16 02:37:30,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19d092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:30, skipping insertion in model container [2021-12-16 02:37:30,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:30" (3/3) ... [2021-12-16 02:37:30,756 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2021-12-16 02:37:30,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:37:30,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:37:30,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:37:30,805 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 [2021-12-16 02:37:30,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:37:30,819 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) [2021-12-16 02:37:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:37:30,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:37:30,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:37:30,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:37:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:37:30,830 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:37:30,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:37:30,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283363492] [2021-12-16 02:37:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:37:30,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:37:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:37:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:37:30,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:37:30,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283363492] [2021-12-16 02:37:30,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283363492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:37:30,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:37:30,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:37:30,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441687725] [2021-12-16 02:37:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:37:30,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:37:30,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:37:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:37:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:37:30,955 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) [2021-12-16 02:37:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:37:30,987 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-16 02:37:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:37:30,989 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 [2021-12-16 02:37:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:37:30,996 INFO L225 Difference]: With dead ends: 157 [2021-12-16 02:37:30,996 INFO L226 Difference]: Without dead ends: 74 [2021-12-16 02:37:30,999 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 [2021-12-16 02:37:31,002 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 [2021-12-16 02:37:31,003 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] [2021-12-16 02:37:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-16 02:37:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-16 02:37:31,035 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) [2021-12-16 02:37:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-16 02:37:31,040 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-16 02:37:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:37:31,041 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-16 02:37:31,041 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) [2021-12-16 02:37:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-16 02:37:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:37:31,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:37:31,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:37:31,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:37:31,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:37:31,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:37:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:37:31,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:37:31,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871824152] [2021-12-16 02:37:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:37:31,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:37:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:37:31,072 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:37:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:37:31,106 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 02:37:31,106 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:37:31,111 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:37:31,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:37:31,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:37:31,117 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:37:31,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:37:31,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:37:31 BoogieIcfgContainer [2021-12-16 02:37:31,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:37:31,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:37:31,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:37:31,139 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:37:31,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:30" (3/4) ... [2021-12-16 02:37:31,141 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 02:37:31,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:37:31,143 INFO L158 Benchmark]: Toolchain (without parser) took 1167.30ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.6MB in the beginning and 51.5MB in the end (delta: -6.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-16 02:37:31,144 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 51.0MB in the beginning and 51.0MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:37:31,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.11ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 68.3MB in the end (delta: -23.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-16 02:37:31,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.21ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:37:31,148 INFO L158 Benchmark]: Boogie Preprocessor took 40.31ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 64.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:37:31,148 INFO L158 Benchmark]: RCFGBuilder took 381.87ms. Allocated memory is still 96.5MB. Free memory was 64.4MB in the beginning and 49.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 02:37:31,148 INFO L158 Benchmark]: TraceAbstraction took 394.61ms. Allocated memory is still 96.5MB. Free memory was 49.0MB in the beginning and 51.9MB in the end (delta: -2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:37:31,149 INFO L158 Benchmark]: Witness Printer took 3.15ms. Allocated memory is still 96.5MB. Free memory was 51.9MB in the beginning and 51.5MB in the end (delta: 426.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:37:31,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 51.0MB in the beginning and 51.0MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.11ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 68.3MB in the end (delta: -23.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.21ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.31ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 64.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.87ms. Allocated memory is still 96.5MB. Free memory was 64.4MB in the beginning and 49.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 394.61ms. Allocated memory is still 96.5MB. Free memory was 49.0MB in the beginning and 51.9MB in the end (delta: -2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.15ms. Allocated memory is still 96.5MB. Free memory was 51.9MB in the beginning and 51.5MB in the end (delta: 426.9kB). 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, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 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 [2021-12-16 02:37:31,200 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-tmp.no-commuhash-c3fed41 [2021-12-16 02:37:32,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:37:33,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:37:33,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:37:33,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:37:33,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:37:33,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:37:33,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:37:33,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:37:33,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:37:33,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:37:33,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:37:33,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:37:33,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:37:33,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:37:33,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:37:33,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:37:33,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:37:33,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:37:33,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:37:33,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:37:33,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:37:33,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:37:33,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:37:33,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:37:33,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:37:33,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:37:33,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:37:33,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:37:33,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:37:33,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:37:33,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:37:33,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:37:33,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:37:33,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:37:33,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:37:33,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:37:33,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:37:33,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:37:33,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:37:33,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:37:33,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 02:37:33,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:37:33,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:37:33,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:37:33,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:37:33,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:37:33,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:37:33,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:37:33,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:37:33,125 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:37:33,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 02:37:33,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 02:37:33,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 02:37:33,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:37:33,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:37:33,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:37:33,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:37:33,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:37:33,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:37:33,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:37:33,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:37:33,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:37:33,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:37:33,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:37:33,128 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 02:37:33,128 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 02:37:33,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:37:33,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:37:33,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:37:33,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:37:33,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 02:37:33,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2021-12-16 02:37:33,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:37:33,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:37:33,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:37:33,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:37:33,426 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:37:33,427 INFO L432 ainManager$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 [2021-12-16 02:37:33,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d760adc76/fae017b2a0a6450488268e3a58a10473/FLAGe28387437 [2021-12-16 02:37:33,901 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:37:33,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2021-12-16 02:37:33,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d760adc76/fae017b2a0a6450488268e3a58a10473/FLAGe28387437 [2021-12-16 02:37:33,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d760adc76/fae017b2a0a6450488268e3a58a10473 [2021-12-16 02:37:33,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:37:33,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:37:33,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:37:33,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:37:33,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:37:33,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:33" (1/1) ... [2021-12-16 02:37:33,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d407d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:33, skipping insertion in model container [2021-12-16 02:37:33,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:33" (1/1) ... [2021-12-16 02:37:33,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:37:33,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:37:34,080 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] [2021-12-16 02:37:34,084 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] [2021-12-16 02:37:34,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:37:34,124 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:37:34,149 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] [2021-12-16 02:37:34,150 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] [2021-12-16 02:37:34,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:37:34,191 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:37:34,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34 WrapperNode [2021-12-16 02:37:34,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:37:34,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:37:34,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:37:34,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:37:34,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,228 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2021-12-16 02:37:34,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:37:34,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:37:34,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:37:34,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:37:34,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:37:34,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:37:34,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:37:34,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:37:34,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (1/1) ... [2021-12-16 02:37:34,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:37:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:37:34,303 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) [2021-12-16 02:37:34,319 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 [2021-12-16 02:37:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:37:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 02:37:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:37:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:37:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:37:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:37:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:37:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:37:34,402 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:37:34,403 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:37:36,912 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:37:36,921 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:37:36,928 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:37:36,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:36 BoogieIcfgContainer [2021-12-16 02:37:36,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:37:36,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:37:36,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:37:36,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:37:36,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:37:33" (1/3) ... [2021-12-16 02:37:36,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed8dd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:36, skipping insertion in model container [2021-12-16 02:37:36,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:34" (2/3) ... [2021-12-16 02:37:36,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed8dd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:36, skipping insertion in model container [2021-12-16 02:37:36,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:36" (3/3) ... [2021-12-16 02:37:36,938 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2021-12-16 02:37:36,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:37:36,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:37:36,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:37:36,984 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 [2021-12-16 02:37:36,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:37:36,995 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) [2021-12-16 02:37:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:37:36,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:37:36,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:37:36,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:37:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:37:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:37:37,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:37:37,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431737590] [2021-12-16 02:37:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:37:37,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:37:37,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:37:37,025 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) [2021-12-16 02:37:37,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 02:37:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:37:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 02:37:37,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:37:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:37:37,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:37:37,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 02:37:37,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431737590] [2021-12-16 02:37:37,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431737590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:37:37,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:37:37,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:37:37,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281034212] [2021-12-16 02:37:37,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:37:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:37:37,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 02:37:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:37:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:37:37,468 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) [2021-12-16 02:37:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:37:37,487 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-16 02:37:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:37:37,488 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 [2021-12-16 02:37:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:37:37,494 INFO L225 Difference]: With dead ends: 157 [2021-12-16 02:37:37,494 INFO L226 Difference]: Without dead ends: 74 [2021-12-16 02:37:37,497 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 [2021-12-16 02:37:37,499 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 [2021-12-16 02:37:37,500 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] [2021-12-16 02:37:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-16 02:37:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-16 02:37:37,534 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) [2021-12-16 02:37:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-16 02:37:37,543 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-16 02:37:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:37:37,544 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-16 02:37:37,544 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) [2021-12-16 02:37:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-16 02:37:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:37:37,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:37:37,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:37:37,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 02:37:37,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:37:37,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:37:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:37:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:37:37,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:37:37,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77825995] [2021-12-16 02:37:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:37:37,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:37:37,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:37:37,754 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) [2021-12-16 02:37:37,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process