./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e 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/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:24:31,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:24:31,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:24:31,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:24:31,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:24:31,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:24:31,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:24:31,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:24:31,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:24:31,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:24:31,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:24:31,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:24:31,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:24:31,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:24:31,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:24:31,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:24:31,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:24:31,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:24:31,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:24:31,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:24:31,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:24:31,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:24:31,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:24:31,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:24:31,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:24:31,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:24:31,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:24:31,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:24:31,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:24:31,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:24:31,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:24:31,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:24:31,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:24:31,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:24:31,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:24:31,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:24:31,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:24:31,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:24:31,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:24:31,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:24:31,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:24:31,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:24:31,323 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:24:31,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:24:31,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:24:31,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:24:31,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:24:31,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:24:31,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:24:31,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:24:31,328 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:24:31,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:24:31,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:24:31,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:24:31,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:24:31,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:24:31,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:24:31,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:24:31,330 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:24:31,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:24:31,330 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:24:31,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:24:31,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:24:31,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:24:31,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:24:31,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:31,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:24:31,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:24:31,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:24:31,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:24:31,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:24:31,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:24:31,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:24:31,339 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:24:31,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:24:31,340 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:24:31,340 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 [2023-02-17 09:24:31,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:24:31,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:24:31,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:24:31,596 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:24:31,596 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:24:31,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2023-02-17 09:24:32,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:24:33,020 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:24:33,021 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2023-02-17 09:24:33,025 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503b4d736/dc084354fa0d491f9ba03b58f445ecaf/FLAG339de0fad [2023-02-17 09:24:33,037 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503b4d736/dc084354fa0d491f9ba03b58f445ecaf [2023-02-17 09:24:33,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:24:33,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:24:33,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:33,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:24:33,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:24:33,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9112d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33, skipping insertion in model container [2023-02-17 09:24:33,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:24:33,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:24:33,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:33,187 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:24:33,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:33,212 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:24:33,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33 WrapperNode [2023-02-17 09:24:33,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:33,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:33,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:24:33,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:24:33,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,238 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-02-17 09:24:33,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:33,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:24:33,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:24:33,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:24:33,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:24:33,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:24:33,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:24:33,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:24:33,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (1/1) ... [2023-02-17 09:24:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:33,294 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) [2023-02-17 09:24:33,312 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 [2023-02-17 09:24:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure p [2023-02-17 09:24:33,335 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2023-02-17 09:24:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:24:33,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:24:33,386 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:24:33,388 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:24:33,506 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:24:33,513 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:24:33,513 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 09:24:33,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:33 BoogieIcfgContainer [2023-02-17 09:24:33,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:24:33,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:24:33,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:24:33,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:24:33,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:24:33" (1/3) ... [2023-02-17 09:24:33,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316a4395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:33, skipping insertion in model container [2023-02-17 09:24:33,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:33" (2/3) ... [2023-02-17 09:24:33,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316a4395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:33, skipping insertion in model container [2023-02-17 09:24:33,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:33" (3/3) ... [2023-02-17 09:24:33,556 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2023-02-17 09:24:33,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:24:33,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-17 09:24:33,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:24:33,685 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6cbdebe9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:24:33,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-17 09:24:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 09:24:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:24:33,698 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:33,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:33,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 09:24:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 506311056, now seen corresponding path program 1 times [2023-02-17 09:24:33,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:33,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801013336] [2023-02-17 09:24:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:33,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:33,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801013336] [2023-02-17 09:24:33,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801013336] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:33,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:33,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538996134] [2023-02-17 09:24:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:33,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:33,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:33,927 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 09:24:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:33,987 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2023-02-17 09:24:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:33,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2023-02-17 09:24:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:33,996 INFO L225 Difference]: With dead ends: 28 [2023-02-17 09:24:33,996 INFO L226 Difference]: Without dead ends: 16 [2023-02-17 09:24:33,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:34,002 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-17 09:24:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-17 09:24:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-02-17 09:24:34,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2023-02-17 09:24:34,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:34,034 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-17 09:24:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 09:24:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-02-17 09:24:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:24:34,036 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:34,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:34,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:24:34,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 09:24:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1484226411, now seen corresponding path program 1 times [2023-02-17 09:24:34,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:34,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608680244] [2023-02-17 09:24:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:34,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608680244] [2023-02-17 09:24:34,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608680244] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:34,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:34,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541943097] [2023-02-17 09:24:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:34,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:34,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:34,133 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-17 09:24:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:34,198 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-02-17 09:24:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:34,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-02-17 09:24:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:34,200 INFO L225 Difference]: With dead ends: 28 [2023-02-17 09:24:34,200 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 09:24:34,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:24:34,202 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 09:24:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-02-17 09:24:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-02-17 09:24:34,209 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2023-02-17 09:24:34,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:34,209 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-02-17 09:24:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-17 09:24:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-02-17 09:24:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:24:34,210 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:34,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:24:34,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 09:24:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1484219428, now seen corresponding path program 1 times [2023-02-17 09:24:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125182665] [2023-02-17 09:24:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:34,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125182665] [2023-02-17 09:24:34,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125182665] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:34,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:34,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381621479] [2023-02-17 09:24:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:34,238 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-17 09:24:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:34,250 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-02-17 09:24:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:34,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2023-02-17 09:24:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:34,251 INFO L225 Difference]: With dead ends: 20 [2023-02-17 09:24:34,251 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 09:24:34,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:34,253 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 09:24:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 09:24:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-17 09:24:34,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2023-02-17 09:24:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:34,259 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-17 09:24:34,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-17 09:24:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-17 09:24:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 09:24:34,260 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:34,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:34,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:24:34,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 09:24:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1233838035, now seen corresponding path program 1 times [2023-02-17 09:24:34,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:34,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704901514] [2023-02-17 09:24:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:34,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704901514] [2023-02-17 09:24:34,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704901514] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:34,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:34,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:34,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987940573] [2023-02-17 09:24:34,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:34,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:34,328 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-02-17 09:24:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:34,383 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-02-17 09:24:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:24:34,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2023-02-17 09:24:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:34,387 INFO L225 Difference]: With dead ends: 30 [2023-02-17 09:24:34,388 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 09:24:34,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:24:34,390 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 09:24:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2023-02-17 09:24:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-02-17 09:24:34,399 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2023-02-17 09:24:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:34,399 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-02-17 09:24:34,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-02-17 09:24:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-02-17 09:24:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 09:24:34,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:34,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:34,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:24:34,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 09:24:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1002954419, now seen corresponding path program 1 times [2023-02-17 09:24:34,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:34,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814301387] [2023-02-17 09:24:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:34,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814301387] [2023-02-17 09:24:34,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814301387] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:34,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691509385] [2023-02-17 09:24:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:34,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:34,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:24:34,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:24:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:34,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:24:34,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691509385] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:34,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:34,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 09:24:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336362998] [2023-02-17 09:24:34,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:34,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 09:24:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 09:24:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-17 09:24:34,641 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:34,725 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-02-17 09:24:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 09:24:34,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-17 09:24:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:34,726 INFO L225 Difference]: With dead ends: 35 [2023-02-17 09:24:34,727 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 09:24:34,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-02-17 09:24:34,728 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 37 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:34,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 09:24:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 18. [2023-02-17 09:24:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-02-17 09:24:34,732 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2023-02-17 09:24:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:34,733 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-02-17 09:24:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-02-17 09:24:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 09:24:34,734 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:34,734 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:34,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:34,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:34,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 09:24:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:34,941 INFO L85 PathProgramCache]: Analyzing trace with hash 290555191, now seen corresponding path program 1 times [2023-02-17 09:24:34,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:34,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052386431] [2023-02-17 09:24:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:35,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052386431] [2023-02-17 09:24:35,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052386431] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944038991] [2023-02-17 09:24:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:35,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:35,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:35,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:24:35,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:24:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:35,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:24:35,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:35,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:35,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944038991] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:35,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:35,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 09:24:35,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201211973] [2023-02-17 09:24:35,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:35,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 09:24:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 09:24:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-17 09:24:35,117 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:35,184 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-02-17 09:24:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 09:24:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-17 09:24:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:35,185 INFO L225 Difference]: With dead ends: 23 [2023-02-17 09:24:35,185 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 09:24:35,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-02-17 09:24:35,187 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:35,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 54 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 09:24:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 09:24:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-02-17 09:24:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 09:24:35,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2023-02-17 09:24:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:35,189 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 09:24:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 09:24:35,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 09:24:35,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-17 09:24:35,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-17 09:24:35,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-17 09:24:35,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-17 09:24:35,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:35,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-17 09:24:35,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 09:24:35,407 INFO L899 garLoopResultBuilder]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2023-02-17 09:24:35,408 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-02-17 09:24:35,408 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 20) no Hoare annotation was computed. [2023-02-17 09:24:35,408 INFO L899 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2023-02-17 09:24:35,409 INFO L895 garLoopResultBuilder]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse3 (<= |p_#in~m| 2147483647)) (.cse8 (<= |p_#in~n| 2147483647)) (.cse2 (<= p_~r 2147483647)) (.cse7 (<= |p_#in~r| 2147483647))) (let ((.cse0 (not .cse7)) (.cse1 (<= p_~m 2147483647)) (.cse4 (let ((.cse9 (or .cse2 (and .cse7 .cse2))) (.cse10 (<= p_~n 2147483647)) (.cse11 (<= 0 (+ p_~n (- 1))))) (or (and .cse7 .cse2 .cse9 .cse10 .cse11 .cse8) (and .cse2 .cse9 .cse10 .cse11 .cse8)))) (.cse5 (not .cse8)) (.cse6 (not .cse3))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4) .cse5 .cse6) (or .cse0 (and .cse1 .cse7 .cse2 .cse3 .cse4) .cse5 .cse6)))) [2023-02-17 09:24:35,409 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-02-17 09:24:35,409 INFO L899 garLoopResultBuilder]: For program point L17-3(line 17) no Hoare annotation was computed. [2023-02-17 09:24:35,410 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 21) no Hoare annotation was computed. [2023-02-17 09:24:35,410 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-02-17 09:24:35,410 INFO L899 garLoopResultBuilder]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2023-02-17 09:24:35,410 INFO L895 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse14 (+ p_~r (- 1)))) (let ((.cse6 (<= |p_#in~m| 2147483647)) (.cse8 (<= .cse14 2147483647)) (.cse9 (<= |p_#in~n| 2147483647)) (.cse4 (<= p_~r 2147483647)) (.cse3 (<= |p_#in~r| 2147483647))) (let ((.cse0 (not .cse3)) (.cse2 (<= p_~m 2147483647)) (.cse5 (let ((.cse11 (<= p_~n 2147483647))) (let ((.cse10 (let ((.cse12 (<= 0 .cse14))) (let ((.cse13 (and .cse12 .cse3 .cse4))) (or .cse12 .cse13 (and (or .cse12 .cse13) .cse11 .cse9)))))) (or (and .cse10 .cse8 .cse11 .cse9) (and .cse10 .cse3 .cse4 .cse11 .cse9))))) (.cse1 (not .cse9)) (.cse7 (not .cse6))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6) .cse7) (or .cse0 (and .cse2 .cse8 .cse5 .cse6) .cse1 .cse7))))) [2023-02-17 09:24:35,411 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-02-17 09:24:35,411 INFO L899 garLoopResultBuilder]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2023-02-17 09:24:35,411 INFO L899 garLoopResultBuilder]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-17 09:24:35,411 INFO L899 garLoopResultBuilder]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-17 09:24:35,411 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 22) the Hoare annotation is: true [2023-02-17 09:24:35,411 INFO L899 garLoopResultBuilder]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2023-02-17 09:24:35,412 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 09:24:35,412 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 09:24:35,412 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~m~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647)) [2023-02-17 09:24:35,412 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 09:24:35,412 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2023-02-17 09:24:35,412 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-02-17 09:24:35,413 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2023-02-17 09:24:35,413 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 09:24:35,413 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 24 32) the Hoare annotation is: true [2023-02-17 09:24:35,416 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-02-17 09:24:35,418 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 09:24:35,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 09:24:35 BoogieIcfgContainer [2023-02-17 09:24:35,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 09:24:35,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:24:35,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:24:35,426 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:24:35,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:33" (3/4) ... [2023-02-17 09:24:35,429 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 09:24:35,435 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2023-02-17 09:24:35,443 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-02-17 09:24:35,444 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-17 09:24:35,444 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 09:24:35,471 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:24:35,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:24:35,472 INFO L158 Benchmark]: Toolchain (without parser) took 2432.51ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 59.9MB in the beginning and 81.9MB in the end (delta: -22.0MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-02-17 09:24:35,472 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 76.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:35,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.31ms. Allocated memory is still 107.0MB. Free memory was 59.9MB in the beginning and 50.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:24:35,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.27ms. Allocated memory is still 107.0MB. Free memory was 50.5MB in the beginning and 49.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:35,473 INFO L158 Benchmark]: Boogie Preprocessor took 22.69ms. Allocated memory is still 107.0MB. Free memory was 49.3MB in the beginning and 48.4MB in the end (delta: 924.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:24:35,474 INFO L158 Benchmark]: RCFGBuilder took 250.79ms. Allocated memory is still 107.0MB. Free memory was 48.0MB in the beginning and 38.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:24:35,474 INFO L158 Benchmark]: TraceAbstraction took 1893.34ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 38.3MB in the beginning and 84.0MB in the end (delta: -45.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:35,474 INFO L158 Benchmark]: Witness Printer took 46.09ms. Allocated memory is still 136.3MB. Free memory was 84.0MB in the beginning and 81.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:24:35,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 76.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.31ms. Allocated memory is still 107.0MB. Free memory was 59.9MB in the beginning and 50.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.27ms. Allocated memory is still 107.0MB. Free memory was 50.5MB in the beginning and 49.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.69ms. Allocated memory is still 107.0MB. Free memory was 49.3MB in the beginning and 48.4MB in the end (delta: 924.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.79ms. Allocated memory is still 107.0MB. Free memory was 48.0MB in the beginning and 38.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1893.34ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 38.3MB in the beginning and 84.0MB in the end (delta: -45.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.09ms. Allocated memory is still 136.3MB. Free memory was 84.0MB in the beginning and 81.9MB in the end (delta: 2.2MB). 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 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 93 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 35, 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, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 450 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 4 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/18 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 09:24:35,500 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 Result: TRUE