./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_4+soft_float_4-3a.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 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:15:38,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:15:38,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:15:38,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:15:38,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:15:38,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:15:38,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:15:38,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:15:38,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:15:38,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:15:38,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:15:38,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:15:38,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:15:38,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:15:38,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:15:38,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:15:38,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:15:38,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:15:38,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:15:38,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:15:38,892 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:15:38,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:15:38,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:15:38,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:15:38,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:15:38,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:15:38,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:15:38,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:15:38,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:15:38,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:15:38,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:15:38,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:15:38,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:15:38,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:15:38,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:15:38,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:15:38,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:15:38,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:15:38,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:15:38,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:15:38,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:15:38,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:15:38,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:15:38,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:15:38,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:15:38,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:15:38,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:15:38,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:15:38,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:15:38,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:15:38,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:15:38,941 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:15:38,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:15:38,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:15:38,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:15:38,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:15:38,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:15:38,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:15:38,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:15:38,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:15:38,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:15:38,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:15:38,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:15:38,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:15:38,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:15:38,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:15:38,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:15:38,945 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:15:38,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:15:38,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:15:38,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 [2022-07-21 08:15:39,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:15:39,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:15:39,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:15:39,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:15:39,222 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:15:39,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-21 08:15:39,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76253b61f/0e712069fd39480d9c347169e6a5ad29/FLAG759e7b1ce [2022-07-21 08:15:39,663 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:15:39,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-21 08:15:39,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76253b61f/0e712069fd39480d9c347169e6a5ad29/FLAG759e7b1ce [2022-07-21 08:15:39,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76253b61f/0e712069fd39480d9c347169e6a5ad29 [2022-07-21 08:15:39,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:15:39,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:15:39,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:15:39,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:15:39,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:15:39,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:15:39" (1/1) ... [2022-07-21 08:15:39,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37dccde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:39, skipping insertion in model container [2022-07-21 08:15:39,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:15:39" (1/1) ... [2022-07-21 08:15:39,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:15:39,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:15:39,907 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_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-21 08:15:39,912 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_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-21 08:15:39,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:15:39,959 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:15:39,968 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_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-21 08:15:39,971 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_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-21 08:15:40,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:15:40,025 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:15:40,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40 WrapperNode [2022-07-21 08:15:40,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:15:40,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:15:40,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:15:40,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:15:40,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,071 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-21 08:15:40,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:15:40,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:15:40,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:15:40,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:15:40,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:15:40,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:15:40,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:15:40,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:15:40,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (1/1) ... [2022-07-21 08:15:40,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:15:40,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:15:40,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:15:40,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:15:40,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:15:40,165 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-21 08:15:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-21 08:15:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-21 08:15:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-21 08:15:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:15:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:15:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:15:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 08:15:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 08:15:40,232 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:15:40,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:15:40,630 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:15:40,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:15:40,647 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:15:40,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:15:40 BoogieIcfgContainer [2022-07-21 08:15:40,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:15:40,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:15:40,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:15:40,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:15:40,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:15:39" (1/3) ... [2022-07-21 08:15:40,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f213aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:15:40, skipping insertion in model container [2022-07-21 08:15:40,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:40" (2/3) ... [2022-07-21 08:15:40,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f213aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:15:40, skipping insertion in model container [2022-07-21 08:15:40,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:15:40" (3/3) ... [2022-07-21 08:15:40,654 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-3a.c.cil.c [2022-07-21 08:15:40,664 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:15:40,664 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:15:40,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:15:40,725 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f143c2e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55f01abe [2022-07-21 08:15:40,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:15:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 82 states have (on average 1.670731707317073) internal successors, (137), 84 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 08:15:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:15:40,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:15:40,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:15:40,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:15:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:15:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-21 08:15:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:15:40,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557325392] [2022-07-21 08:15:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:15:40,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:15:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:15:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:15:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:15:40,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557325392] [2022-07-21 08:15:40,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557325392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:15:40,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:15:40,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:15:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205101256] [2022-07-21 08:15:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:15:40,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:15:40,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:15:40,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:15:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:15:40,883 INFO L87 Difference]: Start difference. First operand has 97 states, 82 states have (on average 1.670731707317073) internal successors, (137), 84 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:15:40,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:15:40,943 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-21 08:15:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:15:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 08:15:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:15:40,954 INFO L225 Difference]: With dead ends: 189 [2022-07-21 08:15:40,954 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 08:15:40,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:15:40,964 INFO L413 NwaCegarLoop]: 135 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, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:15:40,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:15:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 08:15:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-21 08:15:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 78 states have internal predecessors, (110), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 08:15:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2022-07-21 08:15:41,007 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 7 [2022-07-21 08:15:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:15:41,007 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2022-07-21 08:15:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:15:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2022-07-21 08:15:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:15:41,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:15:41,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:15:41,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:15:41,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:15:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:15:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-21 08:15:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:15:41,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628457155] [2022-07-21 08:15:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:15:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:15:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:15:41,041 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:15:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:15:41,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:15:41,074 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:15:41,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:15:41,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 08:15:41,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:15:41,079 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:15:41,081 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:15:41,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:15:41 BoogieIcfgContainer [2022-07-21 08:15:41,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:15:41,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:15:41,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:15:41,103 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:15:41,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:15:40" (3/4) ... [2022-07-21 08:15:41,105 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 08:15:41,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:15:41,107 INFO L158 Benchmark]: Toolchain (without parser) took 1422.18ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.6MB in the beginning and 34.1MB in the end (delta: 2.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-21 08:15:41,107 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 39.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:15:41,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.56ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.9MB in the end (delta: -621.4kB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-07-21 08:15:41,110 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.32ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 34.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:15:41,113 INFO L158 Benchmark]: Boogie Preprocessor took 29.17ms. Allocated memory is still 58.7MB. Free memory was 34.9MB in the beginning and 33.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:15:41,114 INFO L158 Benchmark]: RCFGBuilder took 546.30ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.2MB in the beginning and 41.0MB in the end (delta: -7.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-07-21 08:15:41,114 INFO L158 Benchmark]: TraceAbstraction took 452.10ms. Allocated memory is still 71.3MB. Free memory was 40.4MB in the beginning and 34.5MB in the end (delta: 5.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-21 08:15:41,114 INFO L158 Benchmark]: Witness Printer took 3.06ms. Allocated memory is still 71.3MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:15:41,121 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 58.7MB. Free memory is still 39.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.56ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.9MB in the end (delta: -621.4kB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.32ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 34.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.17ms. Allocated memory is still 58.7MB. Free memory was 34.9MB in the beginning and 33.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 546.30ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.2MB in the beginning and 41.0MB in the end (delta: -7.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * TraceAbstraction took 452.10ms. Allocated memory is still 71.3MB. Free memory was 40.4MB in the beginning and 34.5MB in the end (delta: 5.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 3.06ms. Allocated memory is still 71.3MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] 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 < 1.39844f) 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 4 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 135 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, 135 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=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 08:15:41,153 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_4+soft_float_4-3a.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 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:15:42,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:15:42,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:15:42,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:15:42,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:15:42,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:15:42,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:15:42,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:15:42,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:15:42,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:15:42,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:15:42,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:15:42,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:15:42,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:15:42,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:15:42,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:15:42,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:15:42,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:15:42,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:15:42,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:15:42,778 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:15:42,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:15:42,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:15:42,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:15:42,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:15:42,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:15:42,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:15:42,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:15:42,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:15:42,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:15:42,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:15:42,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:15:42,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:15:42,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:15:42,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:15:42,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:15:42,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:15:42,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:15:42,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:15:42,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:15:42,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:15:42,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:15:42,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 08:15:42,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:15:42,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:15:42,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:15:42,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:15:42,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:15:42,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:15:42,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:15:42,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:15:42,819 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:15:42,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:15:42,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:15:42,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:15:42,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:15:42,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:15:42,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:15:42,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:15:42,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:15:42,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:15:42,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:15:42,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:15:42,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:15:42,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:15:42,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:15:42,823 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 08:15:42,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 08:15:42,823 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:15:42,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:15:42,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:15:42,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 08:15:42,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 [2022-07-21 08:15:43,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:15:43,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:15:43,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:15:43,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:15:43,098 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:15:43,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-21 08:15:43,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cccff20ed/fc9e89828f0c4e9cb3bcca62f2173f09/FLAG0f26f167d [2022-07-21 08:15:43,547 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:15:43,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-21 08:15:43,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cccff20ed/fc9e89828f0c4e9cb3bcca62f2173f09/FLAG0f26f167d [2022-07-21 08:15:43,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cccff20ed/fc9e89828f0c4e9cb3bcca62f2173f09 [2022-07-21 08:15:43,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:15:43,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:15:43,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:15:43,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:15:43,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:15:43,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1821041c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43, skipping insertion in model container [2022-07-21 08:15:43,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:15:43,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:15:43,702 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_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-21 08:15:43,717 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_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-21 08:15:43,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:15:43,753 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:15:43,763 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_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-21 08:15:43,764 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_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-21 08:15:43,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:15:43,789 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:15:43,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43 WrapperNode [2022-07-21 08:15:43,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:15:43,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:15:43,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:15:43,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:15:43,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,835 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-21 08:15:43,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:15:43,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:15:43,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:15:43,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:15:43,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:15:43,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:15:43,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:15:43,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:15:43,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (1/1) ... [2022-07-21 08:15:43,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:15:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:15:43,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:15:43,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:15:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:15:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 08:15:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-21 08:15:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-21 08:15:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-21 08:15:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-21 08:15:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:15:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:15:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 08:15:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 08:15:44,011 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:15:44,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:15:46,537 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:15:46,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:15:46,542 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:15:46,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:15:46 BoogieIcfgContainer [2022-07-21 08:15:46,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:15:46,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:15:46,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:15:46,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:15:46,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:15:43" (1/3) ... [2022-07-21 08:15:46,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afa039c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:15:46, skipping insertion in model container [2022-07-21 08:15:46,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:15:43" (2/3) ... [2022-07-21 08:15:46,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afa039c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:15:46, skipping insertion in model container [2022-07-21 08:15:46,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:15:46" (3/3) ... [2022-07-21 08:15:46,549 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-3a.c.cil.c [2022-07-21 08:15:46,559 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:15:46,559 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:15:46,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:15:46,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58a539b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e33cefb [2022-07-21 08:15:46,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:15:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 08:15:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:15:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:15:46,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:15:46,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:15:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:15:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-21 08:15:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 08:15:46,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995205611] [2022-07-21 08:15:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:15:46,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 08:15:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 08:15:46,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 08:15:46,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 08:15:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:15:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 08:15:46,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:15:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:15:47,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:15:47,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 08:15:47,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995205611] [2022-07-21 08:15:47,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995205611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:15:47,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:15:47,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:15:47,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297102730] [2022-07-21 08:15:47,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:15:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:15:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 08:15:47,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:15:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:15:47,040 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:15:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:15:47,070 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2022-07-21 08:15:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:15:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 08:15:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:15:47,084 INFO L225 Difference]: With dead ends: 121 [2022-07-21 08:15:47,084 INFO L226 Difference]: Without dead ends: 56 [2022-07-21 08:15:47,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:15:47,092 INFO L413 NwaCegarLoop]: 82 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, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:15:47,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:15:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-21 08:15:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-21 08:15:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 08:15:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2022-07-21 08:15:47,126 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2022-07-21 08:15:47,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:15:47,126 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2022-07-21 08:15:47,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:15:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2022-07-21 08:15:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:15:47,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:15:47,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:15:47,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 08:15:47,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 08:15:47,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:15:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:15:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-21 08:15:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 08:15:47,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615755125] [2022-07-21 08:15:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:15:47,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 08:15:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 08:15:47,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 08:15:47,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process