./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark29_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 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/benchmark29_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 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:39:02,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:39:02,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:39:02,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:39:02,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:39:02,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:39:02,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:39:02,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:39:02,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:39:02,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:39:02,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:39:02,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:39:02,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:39:02,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:39:02,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:39:02,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:39:02,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:39:02,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:39:02,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:39:02,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:39:02,162 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:39:02,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:39:02,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:39:02,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:39:02,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:39:02,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:39:02,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:39:02,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:39:02,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:39:02,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:39:02,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:39:02,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:39:02,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:39:02,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:39:02,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:39:02,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:39:02,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:39:02,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:39:02,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:39:02,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:39:02,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:39:02,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:39:02,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-23 13:39:02,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:39:02,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:39:02,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:39:02,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:39:02,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:39:02,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:39:02,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:39:02,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:39:02,224 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:39:02,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:39:02,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:39:02,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:39:02,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:39:02,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:39:02,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:39:02,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:39:02,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:39:02,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:39:02,227 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:39:02,228 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:39:02,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:39:02,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:39:02,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:39:02,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:39:02,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:39:02,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:39:02,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:39:02,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:39:02,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:39:02,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:39:02,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:39:02,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:39:02,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:39:02,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 [2022-07-23 13:39:02,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:39:02,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:39:02,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:39:02,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:39:02,542 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:39:02,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2022-07-23 13:39:02,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482284ed7/92b16cdc8ee040e89031fbedf8f698e9/FLAG44533ee97 [2022-07-23 13:39:03,016 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:39:03,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2022-07-23 13:39:03,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482284ed7/92b16cdc8ee040e89031fbedf8f698e9/FLAG44533ee97 [2022-07-23 13:39:03,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482284ed7/92b16cdc8ee040e89031fbedf8f698e9 [2022-07-23 13:39:03,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:39:03,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:39:03,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:39:03,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:39:03,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:39:03,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134ca737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03, skipping insertion in model container [2022-07-23 13:39:03,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:39:03,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:39:03,599 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/benchmark29_linear.i[868,881] [2022-07-23 13:39:03,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:39:03,611 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:39:03,620 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/benchmark29_linear.i[868,881] [2022-07-23 13:39:03,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:39:03,632 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:39:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03 WrapperNode [2022-07-23 13:39:03,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:39:03,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:39:03,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:39:03,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:39:03,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,662 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-07-23 13:39:03,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:39:03,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:39:03,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:39:03,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:39:03,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:39:03,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:39:03,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:39:03,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:39:03,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (1/1) ... [2022-07-23 13:39:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:39:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:03,728 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) [2022-07-23 13:39:03,754 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 [2022-07-23 13:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 13:39:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:39:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:39:03,815 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:39:03,816 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:39:03,958 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:39:03,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:39:03,975 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 13:39:03,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:39:03 BoogieIcfgContainer [2022-07-23 13:39:03,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:39:03,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:39:03,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:39:03,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:39:03,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:39:03" (1/3) ... [2022-07-23 13:39:03,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf0cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:39:03, skipping insertion in model container [2022-07-23 13:39:03,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:03" (2/3) ... [2022-07-23 13:39:03,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf0cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:39:03, skipping insertion in model container [2022-07-23 13:39:03,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:39:03" (3/3) ... [2022-07-23 13:39:03,987 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark29_linear.i [2022-07-23 13:39:04,011 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:39:04,011 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-23 13:39:04,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:39:04,084 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@7575d7e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@277ed3d4 [2022-07-23 13:39:04,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-23 13:39:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-07-23 13:39:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:39:04,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:04,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:39:04,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2022-07-23 13:39:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:04,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317798423] [2022-07-23 13:39:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 13:39:04,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 13:39:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 13:39:04,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 13:39:04,230 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-23 13:39:04,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-07-23 13:39:04,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-07-23 13:39:04,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-07-23 13:39:04,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-07-23 13:39:04,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:39:04,239 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-23 13:39:04,243 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 13:39:04,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:39:04 BoogieIcfgContainer [2022-07-23 13:39:04,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 13:39:04,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 13:39:04,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 13:39:04,263 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 13:39:04,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:39:03" (3/4) ... [2022-07-23 13:39:04,265 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-23 13:39:04,299 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 13:39:04,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 13:39:04,301 INFO L158 Benchmark]: Toolchain (without parser) took 891.10ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.6MB in the beginning and 70.5MB in the end (delta: 1.1MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-07-23 13:39:04,303 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:39:04,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.87ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.4MB in the beginning and 97.7MB in the end (delta: -26.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 13:39:04,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.65ms. Allocated memory is still 121.6MB. Free memory was 97.7MB in the beginning and 96.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:39:04,306 INFO L158 Benchmark]: Boogie Preprocessor took 30.32ms. Allocated memory is still 121.6MB. Free memory was 96.3MB in the beginning and 95.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:39:04,306 INFO L158 Benchmark]: RCFGBuilder took 282.61ms. Allocated memory is still 121.6MB. Free memory was 95.2MB in the beginning and 85.5MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 13:39:04,307 INFO L158 Benchmark]: TraceAbstraction took 281.95ms. Allocated memory is still 121.6MB. Free memory was 85.1MB in the beginning and 72.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 13:39:04,307 INFO L158 Benchmark]: Witness Printer took 37.38ms. Allocated memory is still 121.6MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:39:04,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.87ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.4MB in the beginning and 97.7MB in the end (delta: -26.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.65ms. Allocated memory is still 121.6MB. Free memory was 97.7MB in the beginning and 96.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.32ms. Allocated memory is still 121.6MB. Free memory was 96.3MB in the beginning and 95.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 282.61ms. Allocated memory is still 121.6MB. Free memory was 95.2MB in the beginning and 85.5MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 281.95ms. Allocated memory is still 121.6MB. Free memory was 85.1MB in the beginning and 72.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 37.38ms. Allocated memory is still 121.6MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). 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: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x