./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 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_4-3.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 bd1e20a7a2bac41d4f53b8467ce4dcd444e356387bd290a75ef99d78cf8ebeb3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:47:29,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:47:29,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:47:29,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:47:29,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:47:29,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:47:29,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:47:29,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:47:29,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:47:29,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:47:29,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:47:29,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:47:29,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:47:29,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:47:29,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:47:29,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:47:29,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:47:29,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:47:29,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:47:29,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:47:29,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:47:29,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:47:29,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:47:29,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:47:29,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:47:29,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:47:29,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:47:29,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:47:29,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:47:29,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:47:29,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:47:29,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:47:29,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:47:29,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:47:29,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:47:29,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:47:29,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:47:29,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:47:29,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:47:29,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:47:29,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:47:29,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-28 08:47:29,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:47:29,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:47:29,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:47:29,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:47:29,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:47:29,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:47:29,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:47:29,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:47:29,465 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:47:29,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:47:29,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:47:29,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:47:29,467 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:47:29,467 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 08:47:29,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:47:29,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:47:29,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:47:29,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:47:29,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:47:29,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:47:29,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:47:29,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:47:29,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:47:29,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:47:29,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:47:29,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:47:29,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:47:29,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd1e20a7a2bac41d4f53b8467ce4dcd444e356387bd290a75ef99d78cf8ebeb3 [2021-12-28 08:47:29,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:47:29,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:47:29,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:47:29,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:47:29,745 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:47:29,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3.c.cil.c [2021-12-28 08:47:29,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3b5386d/44729da1071a438fb5452b4192af54f3/FLAG0c3c01257 [2021-12-28 08:47:30,106 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:47:30,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3.c.cil.c [2021-12-28 08:47:30,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3b5386d/44729da1071a438fb5452b4192af54f3/FLAG0c3c01257 [2021-12-28 08:47:30,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3b5386d/44729da1071a438fb5452b4192af54f3 [2021-12-28 08:47:30,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:47:30,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:47:30,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:47:30,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:47:30,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:47:30,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1690cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30, skipping insertion in model container [2021-12-28 08:47:30,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:47:30,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:47:30,677 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_4-3.c.cil.c[729,742] [2021-12-28 08:47:30,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:47:30,737 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:47:30,744 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_4-3.c.cil.c[729,742] [2021-12-28 08:47:30,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:47:30,781 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:47:30,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30 WrapperNode [2021-12-28 08:47:30,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:47:30,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:47:30,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:47:30,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:47:30,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,825 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-28 08:47:30,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:47:30,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:47:30,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:47:30,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:47:30,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:47:30,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:47:30,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:47:30,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:47:30,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (1/1) ... [2021-12-28 08:47:30,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:47:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:47:30,892 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) [2021-12-28 08:47:30,911 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 [2021-12-28 08:47:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 08:47:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 08:47:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 08:47:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 08:47:30,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:47:30,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:47:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-28 08:47:30,937 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-28 08:47:30,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 08:47:30,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 08:47:31,008 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:47:31,010 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:47:31,194 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:47:31,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:47:31,199 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 08:47:31,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:47:31 BoogieIcfgContainer [2021-12-28 08:47:31,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:47:31,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:47:31,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:47:31,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:47:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:47:30" (1/3) ... [2021-12-28 08:47:31,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c636d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:47:31, skipping insertion in model container [2021-12-28 08:47:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:47:30" (2/3) ... [2021-12-28 08:47:31,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c636d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:47:31, skipping insertion in model container [2021-12-28 08:47:31,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:47:31" (3/3) ... [2021-12-28 08:47:31,204 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3.c.cil.c [2021-12-28 08:47:31,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:47:31,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-12-28 08:47:31,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:47:31,260 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 [2021-12-28 08:47:31,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-12-28 08:47:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 59 states have (on average 1.6440677966101696) internal successors, (97), 79 states have internal predecessors, (97), 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) [2021-12-28 08:47:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:47:31,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:31,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:31,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash -975092046, now seen corresponding path program 1 times [2021-12-28 08:47:31,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366287489] [2021-12-28 08:47:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:31,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:47:31,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:47:31,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366287489] [2021-12-28 08:47:31,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366287489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:47:31,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:47:31,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:47:31,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802968928] [2021-12-28 08:47:31,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:47:31,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 08:47:31,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:47:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 08:47:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 08:47:31,450 INFO L87 Difference]: Start difference. First operand has 92 states, 59 states have (on average 1.6440677966101696) internal successors, (97), 79 states have internal predecessors, (97), 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 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) [2021-12-28 08:47:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:47:31,488 INFO L93 Difference]: Finished difference Result 179 states and 235 transitions. [2021-12-28 08:47:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 08:47:31,490 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 [2021-12-28 08:47:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:47:31,496 INFO L225 Difference]: With dead ends: 179 [2021-12-28 08:47:31,497 INFO L226 Difference]: Without dead ends: 80 [2021-12-28 08:47:31,502 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 [2021-12-28 08:47:31,505 INFO L933 BasicCegarLoop]: 108 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, 108 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 [2021-12-28 08:47:31,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:47:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-28 08:47:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-28 08:47:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 69 states have internal predecessors, (80), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 08:47:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2021-12-28 08:47:31,559 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 9 [2021-12-28 08:47:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:47:31,559 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2021-12-28 08:47:31,559 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) [2021-12-28 08:47:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2021-12-28 08:47:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:47:31,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:31,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:31,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:47:31,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:31,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash -976033312, now seen corresponding path program 1 times [2021-12-28 08:47:31,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:31,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700747272] [2021-12-28 08:47:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:31,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:47:31,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:47:31,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700747272] [2021-12-28 08:47:31,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700747272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:47:31,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:47:31,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:47:31,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630375251] [2021-12-28 08:47:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:47:31,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:47:31,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:47:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:47:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:47:31,641 INFO L87 Difference]: Start difference. First operand 80 states and 95 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) [2021-12-28 08:47:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:47:31,723 INFO L93 Difference]: Finished difference Result 203 states and 247 transitions. [2021-12-28 08:47:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:47:31,723 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 [2021-12-28 08:47:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:47:31,727 INFO L225 Difference]: With dead ends: 203 [2021-12-28 08:47:31,728 INFO L226 Difference]: Without dead ends: 126 [2021-12-28 08:47:31,728 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 [2021-12-28 08:47:31,729 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 62 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:47:31,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 249 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:47:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-28 08:47:31,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2021-12-28 08:47:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 102 states have internal predecessors, (128), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 08:47:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2021-12-28 08:47:31,745 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 9 [2021-12-28 08:47:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:47:31,746 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2021-12-28 08:47:31,747 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) [2021-12-28 08:47:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2021-12-28 08:47:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-28 08:47:31,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:31,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:31,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:47:31,750 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1663432537, now seen corresponding path program 1 times [2021-12-28 08:47:31,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:31,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059918962] [2021-12-28 08:47:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:31,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:47:31,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:47:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059918962] [2021-12-28 08:47:31,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059918962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:47:31,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:47:31,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:47:31,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681449021] [2021-12-28 08:47:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:47:31,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:47:31,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:47:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:47:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:47:31,820 INFO L87 Difference]: Start difference. First operand 114 states and 143 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) [2021-12-28 08:47:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:47:31,851 INFO L93 Difference]: Finished difference Result 194 states and 237 transitions. [2021-12-28 08:47:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:47:31,851 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 [2021-12-28 08:47:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:47:31,852 INFO L225 Difference]: With dead ends: 194 [2021-12-28 08:47:31,852 INFO L226 Difference]: Without dead ends: 85 [2021-12-28 08:47:31,853 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 [2021-12-28 08:47:31,853 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 7 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 264 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 [2021-12-28 08:47:31,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 264 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:47:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-28 08:47:31,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-28 08:47:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 73 states have internal predecessors, (84), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 08:47:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2021-12-28 08:47:31,859 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 12 [2021-12-28 08:47:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:47:31,859 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2021-12-28 08:47:31,859 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) [2021-12-28 08:47:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2021-12-28 08:47:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 08:47:31,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:31,860 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:31,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:47:31,860 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1750636750, now seen corresponding path program 1 times [2021-12-28 08:47:31,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:31,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455456818] [2021-12-28 08:47:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:31,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 08:47:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:47:31,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:47:31,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455456818] [2021-12-28 08:47:31,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455456818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:47:31,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:47:31,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:47:31,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739720592] [2021-12-28 08:47:31,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:47:31,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:47:31,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:47:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:47:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:47:31,916 INFO L87 Difference]: Start difference. First operand 85 states and 99 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) [2021-12-28 08:47:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:47:31,983 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2021-12-28 08:47:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:47:31,984 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 [2021-12-28 08:47:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:47:31,985 INFO L225 Difference]: With dead ends: 128 [2021-12-28 08:47:31,985 INFO L226 Difference]: Without dead ends: 125 [2021-12-28 08:47:31,985 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 [2021-12-28 08:47:31,986 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 303 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 [2021-12-28 08:47:31,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 303 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:47:31,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-28 08:47:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2021-12-28 08:47:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.518987341772152) internal successors, (120), 96 states have internal predecessors, (120), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 08:47:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2021-12-28 08:47:31,994 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 16 [2021-12-28 08:47:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:47:31,994 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2021-12-28 08:47:31,994 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) [2021-12-28 08:47:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2021-12-28 08:47:31,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 08:47:31,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:31,995 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:31,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:47:31,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1564835655, now seen corresponding path program 1 times [2021-12-28 08:47:31,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:31,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356510080] [2021-12-28 08:47:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:31,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 08:47:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 08:47:32,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:47:32,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356510080] [2021-12-28 08:47:32,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356510080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:47:32,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:47:32,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:47:32,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375652305] [2021-12-28 08:47:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:47:32,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:47:32,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:47:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:47:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:47:32,023 INFO L87 Difference]: Start difference. First operand 109 states and 135 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) [2021-12-28 08:47:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:47:32,039 INFO L93 Difference]: Finished difference Result 115 states and 141 transitions. [2021-12-28 08:47:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:47:32,040 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 [2021-12-28 08:47:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:47:32,041 INFO L225 Difference]: With dead ends: 115 [2021-12-28 08:47:32,041 INFO L226 Difference]: Without dead ends: 114 [2021-12-28 08:47:32,041 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 [2021-12-28 08:47:32,042 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 170 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 [2021-12-28 08:47:32,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 170 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:47:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-28 08:47:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-12-28 08:47:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 95 states have internal predecessors, (118), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 08:47:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2021-12-28 08:47:32,048 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 17 [2021-12-28 08:47:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:47:32,048 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2021-12-28 08:47:32,048 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) [2021-12-28 08:47:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2021-12-28 08:47:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 08:47:32,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:32,049 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:32,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 08:47:32,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2142254118, now seen corresponding path program 1 times [2021-12-28 08:47:32,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:32,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693861481] [2021-12-28 08:47:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:32,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 08:47:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:47:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:47:32,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:47:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693861481] [2021-12-28 08:47:32,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693861481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:47:32,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:47:32,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:47:32,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752371018] [2021-12-28 08:47:32,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:47:32,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:47:32,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:47:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:47:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:47:32,102 INFO L87 Difference]: Start difference. First operand 108 states and 133 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) [2021-12-28 08:47:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:47:32,176 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2021-12-28 08:47:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:47:32,176 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 [2021-12-28 08:47:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:47:32,178 INFO L225 Difference]: With dead ends: 128 [2021-12-28 08:47:32,178 INFO L226 Difference]: Without dead ends: 125 [2021-12-28 08:47:32,179 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 [2021-12-28 08:47:32,182 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 63 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:47:32,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 306 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:47:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-28 08:47:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2021-12-28 08:47:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 100 states have internal predecessors, (123), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 08:47:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 138 transitions. [2021-12-28 08:47:32,191 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 138 transitions. Word has length 18 [2021-12-28 08:47:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:47:32,191 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 138 transitions. [2021-12-28 08:47:32,191 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) [2021-12-28 08:47:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 138 transitions. [2021-12-28 08:47:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 08:47:32,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:47:32,192 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:32,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 08:47:32,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-12-28 08:47:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:47:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1983274809, now seen corresponding path program 1 times [2021-12-28 08:47:32,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:47:32,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037031690] [2021-12-28 08:47:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:47:32,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:47:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:47:32,201 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 08:47:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:47:32,218 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 08:47:32,218 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 08:47:32,219 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2021-12-28 08:47:32,220 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2021-12-28 08:47:32,220 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2021-12-28 08:47:32,220 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2021-12-28 08:47:32,220 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2021-12-28 08:47:32,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2021-12-28 08:47:32,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2021-12-28 08:47:32,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2021-12-28 08:47:32,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2021-12-28 08:47:32,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2021-12-28 08:47:32,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2021-12-28 08:47:32,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2021-12-28 08:47:32,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2021-12-28 08:47:32,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2021-12-28 08:47:32,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2021-12-28 08:47:32,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2021-12-28 08:47:32,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2021-12-28 08:47:32,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2021-12-28 08:47:32,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2021-12-28 08:47:32,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2021-12-28 08:47:32,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 08:47:32,226 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:47:32,227 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 08:47:32,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 08:47:32 BoogieIcfgContainer [2021-12-28 08:47:32,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 08:47:32,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 08:47:32,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 08:47:32,243 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 08:47:32,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:47:31" (3/4) ... [2021-12-28 08:47:32,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 08:47:32,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 08:47:32,246 INFO L158 Benchmark]: Toolchain (without parser) took 1707.41ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 38.2MB in the beginning and 55.7MB in the end (delta: -17.5MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-28 08:47:32,246 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:47:32,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.41ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.1MB in the beginning and 55.2MB in the end (delta: -17.1MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2021-12-28 08:47:32,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.20ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 53.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:47:32,247 INFO L158 Benchmark]: Boogie Preprocessor took 40.12ms. Allocated memory is still 71.3MB. Free memory was 53.6MB in the beginning and 52.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:47:32,248 INFO L158 Benchmark]: RCFGBuilder took 332.40ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 37.9MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 08:47:32,248 INFO L158 Benchmark]: TraceAbstraction took 1041.84ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 37.4MB in the beginning and 56.2MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:47:32,248 INFO L158 Benchmark]: Witness Printer took 2.61ms. Allocated memory is still 86.0MB. Free memory was 56.2MB in the beginning and 55.7MB in the end (delta: 471.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:47:32,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.41ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.1MB in the beginning and 55.2MB in the end (delta: -17.1MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.20ms. Allocated memory is still 71.3MB. Free memory was 55.2MB in the beginning and 53.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.12ms. Allocated memory is still 71.3MB. Free memory was 53.6MB in the beginning and 52.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 332.40ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 37.9MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1041.84ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 37.4MB in the beginning and 56.2MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.61ms. Allocated memory is still 86.0MB. Free memory was 56.2MB in the beginning and 55.7MB in the end (delta: 471.3kB). 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: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 76. Possible FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; VAL [ea=0, eb=0] [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L241] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L241] zero = base2flt(0, 0) [L242] CALL base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=16777216, e=0] [L77] (e + 128) << 24U VAL [\old(e)=0, \old(m)=16777216, e=0] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 109]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 109]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 112]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 112]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 133]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 133]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 141]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 141]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 141]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 141]: 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: 1.0s, 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, 1400 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 871 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 529 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, 0.2s 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 [2021-12-28 08:47:32,276 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