./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark27_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark27_linear.i -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 917374027b639c45b575eeb17a4ba7670f94886b4db7d6a64e3f533dbd0231cc --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:51:17,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:51:17,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:51:17,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:51:17,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:51:17,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:51:17,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:51:17,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:51:17,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:51:17,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:51:17,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:51:17,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:51:17,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:51:17,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:51:17,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:51:17,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:51:17,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:51:17,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:51:17,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:51:17,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:51:17,253 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:51:17,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:51:17,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:51:17,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:51:17,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:51:17,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:51:17,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:51:17,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:51:17,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:51:17,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:51:17,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:51:17,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:51:17,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:51:17,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:51:17,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:51:17,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:51:17,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:51:17,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:51:17,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:51:17,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:51:17,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:51:17,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:51:17,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-22 00:51:17,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:51:17,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:51:17,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:51:17,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:51:17,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:51:17,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:51:17,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:51:17,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:51:17,305 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:51:17,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:51:17,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 00:51:17,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:51:17,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:51:17,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 00:51:17,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:51:17,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:51:17,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:51:17,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:51:17,308 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:51:17,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 00:51:17,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:51:17,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:51:17,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:51:17,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:51:17,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:51:17,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:51:17,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:51:17,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:51:17,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:51:17,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:51:17,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:51:17,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:51:17,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:51:17,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 917374027b639c45b575eeb17a4ba7670f94886b4db7d6a64e3f533dbd0231cc [2022-07-22 00:51:17,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:51:17,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:51:17,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:51:17,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:51:17,659 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:51:17,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2022-07-22 00:51:17,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc72371a/a3c6e22f4577416da8a33372efe10232/FLAG354a278ab [2022-07-22 00:51:18,149 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:51:18,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2022-07-22 00:51:18,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc72371a/a3c6e22f4577416da8a33372efe10232/FLAG354a278ab [2022-07-22 00:51:18,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc72371a/a3c6e22f4577416da8a33372efe10232 [2022-07-22 00:51:18,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:51:18,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:51:18,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:51:18,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:51:18,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:51:18,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e993f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18, skipping insertion in model container [2022-07-22 00:51:18,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:51:18,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:51:18,743 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/loop-zilu/benchmark27_linear.i[868,881] [2022-07-22 00:51:18,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:51:18,763 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:51:18,779 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/loop-zilu/benchmark27_linear.i[868,881] [2022-07-22 00:51:18,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:51:18,800 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:51:18,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18 WrapperNode [2022-07-22 00:51:18,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:51:18,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:51:18,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:51:18,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:51:18,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,836 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-07-22 00:51:18,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:51:18,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:51:18,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:51:18,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:51:18,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:51:18,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:51:18,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:51:18,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:51:18,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (1/1) ... [2022-07-22 00:51:18,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:51:18,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:18,892 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) [2022-07-22 00:51:18,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 00:51:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 00:51:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 00:51:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:51:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:51:18,984 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:51:18,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:51:19,139 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:51:19,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:51:19,148 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 00:51:19,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:19 BoogieIcfgContainer [2022-07-22 00:51:19,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:51:19,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:51:19,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:51:19,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:51:19,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:51:18" (1/3) ... [2022-07-22 00:51:19,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1af0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:51:19, skipping insertion in model container [2022-07-22 00:51:19,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:18" (2/3) ... [2022-07-22 00:51:19,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1af0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:51:19, skipping insertion in model container [2022-07-22 00:51:19,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:19" (3/3) ... [2022-07-22 00:51:19,156 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark27_linear.i [2022-07-22 00:51:19,168 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:51:19,169 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 00:51:19,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:51:19,211 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@366e8a6a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3842aa80 [2022-07-22 00:51:19,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 00:51:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-22 00:51:19,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:19,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-22 00:51:19,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:51:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-22 00:51:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:19,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609292265] [2022-07-22 00:51:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:19,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:19,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609292265] [2022-07-22 00:51:19,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609292265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:51:19,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:51:19,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:51:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770353046] [2022-07-22 00:51:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:51:19,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:51:19,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:51:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:51:19,485 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:19,527 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-07-22 00:51:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 00:51:19,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-22 00:51:19,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:19,535 INFO L225 Difference]: With dead ends: 34 [2022-07-22 00:51:19,536 INFO L226 Difference]: Without dead ends: 18 [2022-07-22 00:51:19,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:51:19,541 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:19,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-22 00:51:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-07-22 00:51:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-07-22 00:51:19,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-07-22 00:51:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:19,567 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-07-22 00:51:19,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-07-22 00:51:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 00:51:19,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:19,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 00:51:19,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:51:19,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-22 00:51:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 28693763, now seen corresponding path program 1 times [2022-07-22 00:51:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:19,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416862094] [2022-07-22 00:51:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:51:19,585 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 00:51:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:51:19,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 00:51:19,609 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 00:51:19,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-07-22 00:51:19,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-07-22 00:51:19,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-07-22 00:51:19,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-07-22 00:51:19,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-07-22 00:51:19,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-07-22 00:51:19,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 00:51:19,618 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 00:51:19,621 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 00:51:19,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:51:19 BoogieIcfgContainer [2022-07-22 00:51:19,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 00:51:19,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 00:51:19,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 00:51:19,638 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 00:51:19,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:19" (3/4) ... [2022-07-22 00:51:19,641 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 00:51:19,665 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 00:51:19,666 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 00:51:19,667 INFO L158 Benchmark]: Toolchain (without parser) took 1097.32ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.2MB in the beginning and 29.0MB in the end (delta: -4.7MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-07-22 00:51:19,667 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 48.2MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:51:19,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.93ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.0MB in the beginning and 42.6MB in the end (delta: -18.6MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2022-07-22 00:51:19,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.05ms. Allocated memory is still 58.7MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:51:19,669 INFO L158 Benchmark]: Boogie Preprocessor took 22.26ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 40.1MB in the end (delta: 937.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:51:19,669 INFO L158 Benchmark]: RCFGBuilder took 290.05ms. Allocated memory is still 58.7MB. Free memory was 40.1MB in the beginning and 42.2MB in the end (delta: -2.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-07-22 00:51:19,670 INFO L158 Benchmark]: TraceAbstraction took 486.23ms. Allocated memory is still 58.7MB. Free memory was 41.5MB in the beginning and 30.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-07-22 00:51:19,670 INFO L158 Benchmark]: Witness Printer took 27.89ms. Allocated memory is still 58.7MB. Free memory was 30.4MB in the beginning and 29.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:51:19,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 48.2MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.93ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.0MB in the beginning and 42.6MB in the end (delta: -18.6MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.05ms. Allocated memory is still 58.7MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.26ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 40.1MB in the end (delta: 937.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 290.05ms. Allocated memory is still 58.7MB. Free memory was 40.1MB in the beginning and 42.2MB in the end (delta: -2.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 486.23ms. Allocated memory is still 58.7MB. Free memory was 41.5MB in the beginning and 30.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 27.89ms. Allocated memory is still 58.7MB. Free memory was 30.4MB in the beginning and 29.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 23]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int j = __VERIFIER_nondet_int(); [L22] int k = __VERIFIER_nondet_int(); [L23] ii-j VAL [i=-2147483648, ii-j=1, j=1, k=0] [L23] i-j VAL [i=-2147483648, ii-j=1, j=1, k=0] - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: 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 1 procedures, 23 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 16 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 00:51:19,707 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)