./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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/bitvector/soft_float_4-2.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da84b0bfdfce2fad5f551c5bc14b33ff3764ad6f4b0c00bd09707e2922ecd646 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:50:12,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:50:12,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:50:13,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:50:13,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:50:13,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:50:13,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:50:13,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:50:13,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:50:13,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:50:13,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:50:13,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:50:13,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:50:13,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:50:13,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:50:13,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:50:13,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:50:13,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:50:13,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:50:13,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:50:13,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:50:13,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:50:13,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:50:13,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:50:13,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:50:13,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:50:13,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:50:13,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:50:13,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:50:13,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:50:13,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:50:13,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:50:13,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:50:13,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:50:13,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:50:13,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:50:13,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:50:13,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:50:13,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:50:13,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:50:13,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:50:13,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:50:13,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:50:13,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:50:13,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:50:13,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:50:13,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:50:13,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:50:13,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:50:13,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:50:13,097 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:50:13,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:50:13,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:50:13,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:50:13,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:50:13,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:50:13,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:50:13,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:50:13,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:50:13,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:50:13,099 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:50:13,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:50:13,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:50:13,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:50:13,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:50:13,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:50:13,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:50:13,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:50:13,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:50:13,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:50:13,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:50:13,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:50:13,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:50:13,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:50:13,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:50:13,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:50:13,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da84b0bfdfce2fad5f551c5bc14b33ff3764ad6f4b0c00bd09707e2922ecd646 [2021-12-21 20:50:13,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:50:13,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:50:13,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:50:13,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:50:13,342 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:50:13,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c [2021-12-21 20:50:13,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5fedeacd/f469a03027b84fb097bf34fe46b83c2f/FLAG558968794 [2021-12-21 20:50:13,830 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:50:13,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c [2021-12-21 20:50:13,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5fedeacd/f469a03027b84fb097bf34fe46b83c2f/FLAG558968794 [2021-12-21 20:50:13,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5fedeacd/f469a03027b84fb097bf34fe46b83c2f [2021-12-21 20:50:13,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:50:13,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:50:13,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:50:13,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:50:13,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:50:13,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:50:13" (1/1) ... [2021-12-21 20:50:13,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669c23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:13, skipping insertion in model container [2021-12-21 20:50:13,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:50:13" (1/1) ... [2021-12-21 20:50:13,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:50:13,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:50:14,055 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/bitvector/soft_float_4-2.c.cil.c[816,829] [2021-12-21 20:50:14,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:50:14,110 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:50:14,120 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/bitvector/soft_float_4-2.c.cil.c[816,829] [2021-12-21 20:50:14,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:50:14,162 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:50:14,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14 WrapperNode [2021-12-21 20:50:14,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:50:14,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:50:14,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:50:14,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:50:14,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,207 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2021-12-21 20:50:14,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:50:14,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:50:14,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:50:14,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:50:14,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:50:14,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:50:14,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:50:14,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:50:14,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (1/1) ... [2021-12-21 20:50:14,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:50:14,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:50:14,274 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) [2021-12-21 20:50:14,292 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 [2021-12-21 20:50:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:50:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:50:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-21 20:50:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-21 20:50:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:50:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:50:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-21 20:50:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-21 20:50:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 20:50:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 20:50:14,396 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:50:14,397 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:50:14,579 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:50:14,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:50:14,585 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 20:50:14,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:50:14 BoogieIcfgContainer [2021-12-21 20:50:14,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:50:14,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:50:14,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:50:14,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:50:14,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:50:13" (1/3) ... [2021-12-21 20:50:14,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113a948a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:50:14, skipping insertion in model container [2021-12-21 20:50:14,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:50:14" (2/3) ... [2021-12-21 20:50:14,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113a948a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:50:14, skipping insertion in model container [2021-12-21 20:50:14,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:50:14" (3/3) ... [2021-12-21 20:50:14,593 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2.c.cil.c [2021-12-21 20:50:14,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:50:14,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-12-21 20:50:14,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:50:14,655 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=FINITE_AUTOMATA, 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 [2021-12-21 20:50:14,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-12-21 20:50:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 60 states have (on average 1.65) internal successors, (99), 80 states have internal predecessors, (99), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 20:50:14,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 20:50:14,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:14,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:14,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -832540937, now seen corresponding path program 1 times [2021-12-21 20:50:14,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:14,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432024240] [2021-12-21 20:50:14,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:14,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:50:14,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:50:14,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432024240] [2021-12-21 20:50:14,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432024240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:50:14,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:50:14,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:50:14,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819364345] [2021-12-21 20:50:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:50:14,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 20:50:14,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:50:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 20:50:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 20:50:14,996 INFO L87 Difference]: Start difference. First operand has 92 states, 60 states have (on average 1.65) internal successors, (99), 80 states have internal predecessors, (99), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:50:15,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:50:15,042 INFO L93 Difference]: Finished difference Result 179 states and 234 transitions. [2021-12-21 20:50:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 20:50:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 20:50:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:50:15,053 INFO L225 Difference]: With dead ends: 179 [2021-12-21 20:50:15,053 INFO L226 Difference]: Without dead ends: 80 [2021-12-21 20:50:15,060 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 [2021-12-21 20:50:15,064 INFO L933 BasicCegarLoop]: 107 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, 107 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 [2021-12-21 20:50:15,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:50:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-21 20:50:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-21 20:50:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 70 states have internal predecessors, (81), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 20:50:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2021-12-21 20:50:15,108 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 9 [2021-12-21 20:50:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:50:15,109 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2021-12-21 20:50:15,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:50:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2021-12-21 20:50:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 20:50:15,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:15,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:50:15,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:15,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash -833482203, now seen corresponding path program 1 times [2021-12-21 20:50:15,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:15,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817400025] [2021-12-21 20:50:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:15,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:50:15,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:50:15,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817400025] [2021-12-21 20:50:15,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817400025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:50:15,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:50:15,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:50:15,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627144258] [2021-12-21 20:50:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:50:15,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:50:15,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:50:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:50:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:50:15,209 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:50:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:50:15,288 INFO L93 Difference]: Finished difference Result 203 states and 245 transitions. [2021-12-21 20:50:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:50:15,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 20:50:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:50:15,290 INFO L225 Difference]: With dead ends: 203 [2021-12-21 20:50:15,291 INFO L226 Difference]: Without dead ends: 126 [2021-12-21 20:50:15,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:50:15,292 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:50:15,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 246 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:50:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-21 20:50:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2021-12-21 20:50:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 103 states have internal predecessors, (129), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 20:50:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2021-12-21 20:50:15,323 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 9 [2021-12-21 20:50:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:50:15,323 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2021-12-21 20:50:15,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:50:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2021-12-21 20:50:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 20:50:15,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:15,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:50:15,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:15,325 INFO L85 PathProgramCache]: Analyzing trace with hash 680865012, now seen corresponding path program 1 times [2021-12-21 20:50:15,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:15,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921174026] [2021-12-21 20:50:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:15,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:50:15,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:50:15,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921174026] [2021-12-21 20:50:15,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921174026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:50:15,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:50:15,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:50:15,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054859417] [2021-12-21 20:50:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:50:15,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:50:15,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:50:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:50:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:50:15,413 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:50:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:50:15,456 INFO L93 Difference]: Finished difference Result 194 states and 235 transitions. [2021-12-21 20:50:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:50:15,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-21 20:50:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:50:15,458 INFO L225 Difference]: With dead ends: 194 [2021-12-21 20:50:15,458 INFO L226 Difference]: Without dead ends: 85 [2021-12-21 20:50:15,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:50:15,459 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 7 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:50:15,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 261 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:50:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-21 20:50:15,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-21 20:50:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 74 states have internal predecessors, (85), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 20:50:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2021-12-21 20:50:15,481 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 12 [2021-12-21 20:50:15,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:50:15,481 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2021-12-21 20:50:15,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:50:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2021-12-21 20:50:15,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 20:50:15,481 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:15,482 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 20:50:15,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash -288249193, now seen corresponding path program 1 times [2021-12-21 20:50:15,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:15,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206599138] [2021-12-21 20:50:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:15,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 20:50:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:50:15,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:50:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206599138] [2021-12-21 20:50:15,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206599138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:50:15,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:50:15,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:50:15,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722403512] [2021-12-21 20:50:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:50:15,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:50:15,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:50:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:50:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:50:15,561 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:50:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:50:15,660 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2021-12-21 20:50:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 20:50:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-21 20:50:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:50:15,661 INFO L225 Difference]: With dead ends: 128 [2021-12-21 20:50:15,662 INFO L226 Difference]: Without dead ends: 125 [2021-12-21 20:50:15,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:50:15,663 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 76 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:50:15,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 299 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:50:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-21 20:50:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2021-12-21 20:50:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 80 states have (on average 1.5125) internal successors, (121), 97 states have internal predecessors, (121), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 20:50:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-12-21 20:50:15,671 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 16 [2021-12-21 20:50:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:50:15,672 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-12-21 20:50:15,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:50:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-12-21 20:50:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 20:50:15,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:15,673 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 20:50:15,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -345790334, now seen corresponding path program 1 times [2021-12-21 20:50:15,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:15,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496930145] [2021-12-21 20:50:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:15,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 20:50:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 20:50:15,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:50:15,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496930145] [2021-12-21 20:50:15,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496930145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:50:15,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:50:15,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:50:15,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918084860] [2021-12-21 20:50:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:50:15,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:50:15,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:50:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:50:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:50:15,701 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:50:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:50:15,718 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2021-12-21 20:50:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:50:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-21 20:50:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:50:15,719 INFO L225 Difference]: With dead ends: 115 [2021-12-21 20:50:15,719 INFO L226 Difference]: Without dead ends: 114 [2021-12-21 20:50:15,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:50:15,720 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 3 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:50:15,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 168 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:50:15,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-21 20:50:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-12-21 20:50:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 80 states have (on average 1.4875) internal successors, (119), 96 states have internal predecessors, (119), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 20:50:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2021-12-21 20:50:15,727 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 17 [2021-12-21 20:50:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:50:15,727 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2021-12-21 20:50:15,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:50:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2021-12-21 20:50:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 20:50:15,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:15,728 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 20:50:15,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:15,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1242117633, now seen corresponding path program 1 times [2021-12-21 20:50:15,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:15,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090052118] [2021-12-21 20:50:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:15,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 20:50:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:50:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:50:15,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:50:15,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090052118] [2021-12-21 20:50:15,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090052118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:50:15,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:50:15,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:50:15,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124850693] [2021-12-21 20:50:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:50:15,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:50:15,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:50:15,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:50:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:50:15,767 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:50:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:50:15,819 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2021-12-21 20:50:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 20:50:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-21 20:50:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:50:15,820 INFO L225 Difference]: With dead ends: 128 [2021-12-21 20:50:15,820 INFO L226 Difference]: Without dead ends: 125 [2021-12-21 20:50:15,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:50:15,821 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 63 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:50:15,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 302 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:50:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-21 20:50:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2021-12-21 20:50:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 101 states have internal predecessors, (124), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 20:50:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2021-12-21 20:50:15,827 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 18 [2021-12-21 20:50:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:50:15,828 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2021-12-21 20:50:15,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:50:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2021-12-21 20:50:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 20:50:15,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:50:15,829 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 20:50:15,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-21 20:50:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:50:15,829 INFO L85 PathProgramCache]: Analyzing trace with hash 151152450, now seen corresponding path program 1 times [2021-12-21 20:50:15,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:50:15,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562622971] [2021-12-21 20:50:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:50:15,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:50:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:50:15,837 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 20:50:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:50:15,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 20:50:15,854 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 20:50:15,855 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2021-12-21 20:50:15,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2021-12-21 20:50:15,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2021-12-21 20:50:15,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2021-12-21 20:50:15,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2021-12-21 20:50:15,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2021-12-21 20:50:15,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2021-12-21 20:50:15,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2021-12-21 20:50:15,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2021-12-21 20:50:15,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2021-12-21 20:50:15,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2021-12-21 20:50:15,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2021-12-21 20:50:15,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2021-12-21 20:50:15,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2021-12-21 20:50:15,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2021-12-21 20:50:15,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2021-12-21 20:50:15,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2021-12-21 20:50:15,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2021-12-21 20:50:15,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2021-12-21 20:50:15,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2021-12-21 20:50:15,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 20:50:15,861 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:50:15,863 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 20:50:15,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:50:15 BoogieIcfgContainer [2021-12-21 20:50:15,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 20:50:15,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 20:50:15,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 20:50:15,880 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 20:50:15,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:50:14" (3/4) ... [2021-12-21 20:50:15,883 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 20:50:15,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 20:50:15,883 INFO L158 Benchmark]: Toolchain (without parser) took 2017.05ms. Allocated memory was 115.3MB in the beginning and 182.5MB in the end (delta: 67.1MB). Free memory was 91.1MB in the beginning and 59.6MB in the end (delta: 31.5MB). Peak memory consumption was 94.8MB. Max. memory is 16.1GB. [2021-12-21 20:50:15,883 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:50:15,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.15ms. Allocated memory was 115.3MB in the beginning and 182.5MB in the end (delta: 67.1MB). Free memory was 90.7MB in the beginning and 155.2MB in the end (delta: -64.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 20:50:15,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.95ms. Allocated memory is still 182.5MB. Free memory was 155.2MB in the beginning and 154.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:50:15,884 INFO L158 Benchmark]: Boogie Preprocessor took 39.00ms. Allocated memory is still 182.5MB. Free memory was 153.2MB in the beginning and 152.3MB in the end (delta: 866.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:50:15,885 INFO L158 Benchmark]: RCFGBuilder took 338.92ms. Allocated memory is still 182.5MB. Free memory was 152.3MB in the beginning and 136.4MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 20:50:15,885 INFO L158 Benchmark]: TraceAbstraction took 1291.43ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 60.0MB in the end (delta: 76.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2021-12-21 20:50:15,885 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 182.5MB. Free memory was 60.0MB in the beginning and 59.6MB in the end (delta: 367.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:50:15,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.15ms. Allocated memory was 115.3MB in the beginning and 182.5MB in the end (delta: 67.1MB). Free memory was 90.7MB in the beginning and 155.2MB in the end (delta: -64.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.95ms. Allocated memory is still 182.5MB. Free memory was 155.2MB in the beginning and 154.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.00ms. Allocated memory is still 182.5MB. Free memory was 153.2MB in the beginning and 152.3MB in the end (delta: 866.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 338.92ms. Allocated memory is still 182.5MB. Free memory was 152.3MB in the beginning and 136.4MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1291.43ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 60.0MB in the end (delta: 76.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 182.5MB. Free memory was 60.0MB in the beginning and 59.6MB in the end (delta: 367.8kB). 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: 81]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 80. Possible FailurePath: [L230] unsigned int a ; [L231] unsigned int ma = __VERIFIER_nondet_uint(); [L232] signed char ea = __VERIFIER_nondet_char(); [L233] unsigned int b ; [L234] unsigned int mb = __VERIFIER_nondet_uint(); [L235] signed char eb = __VERIFIER_nondet_char(); [L236] unsigned int r_add1 ; [L237] unsigned int r_add2 ; [L238] unsigned int zero ; [L239] int tmp ; [L240] int tmp___0 ; [L241] int __retres14 ; VAL [ea=0, eb=0] [L245] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L29] unsigned int res ; [L30] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L33] COND TRUE ! m [L34] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L84] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L245] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L245] zero = base2flt(0, 0) [L246] CALL base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L29] unsigned int res ; [L30] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L33] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L39] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L61] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L63] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L80] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L81] EXPR e + 128 VAL [\old(e)=0, \old(m)=16777216, e=0] [L81] (e + 128) << 24U VAL [\old(e)=0, \old(m)=16777216, e=0] - UnprovableResult [Line: 49]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 49]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 137]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 137]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 145]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 145]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 145]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 145]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 92 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 211 mSDsluCounter, 1383 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 860 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 523 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 46 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 163 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 6/6 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 [2021-12-21 20:50:15,912 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 No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample