./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf 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/benchmark01_conjunctive.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 943a72d31eebdcd925e39756b65615d2a6fd2676 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:47:52,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:47:52,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:47:52,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:47:52,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:47:52,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:47:52,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:47:52,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:47:52,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:47:52,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:47:52,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:47:52,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:47:52,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:47:52,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:47:52,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:47:52,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:47:52,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:47:52,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:47:52,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:47:52,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:47:52,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:47:52,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:47:52,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:47:52,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:47:52,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:47:52,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:47:52,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:47:52,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:47:52,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:47:52,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:47:52,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:47:52,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:47:52,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:47:52,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:47:52,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:47:52,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:47:52,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:47:52,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:47:52,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:47:52,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:47:52,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:47:52,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-30 22:47:52,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:47:52,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:47:52,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:47:52,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:47:52,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:47:52,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:47:52,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:47:52,494 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:47:52,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:47:52,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:47:52,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:47:52,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:47:52,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:47:52,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:47:52,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 943a72d31eebdcd925e39756b65615d2a6fd2676 [2021-08-30 22:47:52,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:47:52,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:47:52,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:47:52,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:47:52,727 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:47:52,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2021-08-30 22:47:52,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcf461be/698bb21c4a364541a55700cd6eb8baa8/FLAG706b90bd5 [2021-08-30 22:47:53,105 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:47:53,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2021-08-30 22:47:53,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcf461be/698bb21c4a364541a55700cd6eb8baa8/FLAG706b90bd5 [2021-08-30 22:47:53,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcf461be/698bb21c4a364541a55700cd6eb8baa8 [2021-08-30 22:47:53,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:47:53,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:47:53,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:47:53,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:47:53,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:47:53,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a33fb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53, skipping insertion in model container [2021-08-30 22:47:53,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:47:53,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:47:53,677 WARN L228 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/benchmark01_conjunctive.i[873,886] [2021-08-30 22:47:53,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:47:53,692 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:47:53,700 WARN L228 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/benchmark01_conjunctive.i[873,886] [2021-08-30 22:47:53,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:47:53,712 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:47:53,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53 WrapperNode [2021-08-30 22:47:53,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:47:53,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:47:53,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:47:53,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:47:53,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:47:53,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:47:53,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:47:53,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:47:53,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:47:53,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:47:53,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:47:53,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:47:53,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (1/1) ... [2021-08-30 22:47:53,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:47:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:47:53,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 22:47:53,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 22:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 22:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 22:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:47:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:47:53,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:47:53,950 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-30 22:47:53,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:47:53 BoogieIcfgContainer [2021-08-30 22:47:53,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:47:53,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:47:53,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:47:53,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:47:53,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:47:53" (1/3) ... [2021-08-30 22:47:53,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d42307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:47:53, skipping insertion in model container [2021-08-30 22:47:53,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:47:53" (2/3) ... [2021-08-30 22:47:53,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d42307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:47:53, skipping insertion in model container [2021-08-30 22:47:53,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:47:53" (3/3) ... [2021-08-30 22:47:53,960 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2021-08-30 22:47:53,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:47:53,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 22:47:53,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:47:53,996 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 22:47:53,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 22:47:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:47:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-30 22:47:54,007 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:54,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-30 22:47:54,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-08-30 22:47:54,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:54,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913946258] [2021-08-30 22:47:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:54,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:54,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:47:54,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913946258] [2021-08-30 22:47:54,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913946258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:47:54,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:47:54,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:47:54,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244666978] [2021-08-30 22:47:54,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:47:54,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:47:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:47:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:47:54,218 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-30 22:47:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:47:54,302 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-08-30 22:47:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:47:54,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-30 22:47:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:47:54,315 INFO L225 Difference]: With dead ends: 30 [2021-08-30 22:47:54,315 INFO L226 Difference]: Without dead ends: 11 [2021-08-30 22:47:54,317 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:47:54,320 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.30ms IncrementalHoareTripleChecker+Time [2021-08-30 22:47:54,321 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 72.30ms Time] [2021-08-30 22:47:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-30 22:47:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-08-30 22:47:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-08-30 22:47:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-08-30 22:47:54,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-08-30 22:47:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:47:54,341 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-08-30 22:47:54,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-30 22:47:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-08-30 22:47:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-30 22:47:54,343 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:54,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-30 22:47:54,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:47:54,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-08-30 22:47:54,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:54,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537265206] [2021-08-30 22:47:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:54,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:54,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:47:54,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537265206] [2021-08-30 22:47:54,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537265206] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:47:54,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:47:54,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:47:54,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460364137] [2021-08-30 22:47:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:47:54,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:47:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:47:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:47:54,404 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-30 22:47:54,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:47:54,419 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-08-30 22:47:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:47:54,419 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-30 22:47:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:47:54,420 INFO L225 Difference]: With dead ends: 10 [2021-08-30 22:47:54,420 INFO L226 Difference]: Without dead ends: 9 [2021-08-30 22:47:54,420 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:47:54,421 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.09ms IncrementalHoareTripleChecker+Time [2021-08-30 22:47:54,421 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.10ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 11.09ms Time] [2021-08-30 22:47:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-30 22:47:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-30 22:47:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-08-30 22:47:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-30 22:47:54,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-08-30 22:47:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:47:54,424 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-30 22:47:54,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-30 22:47:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-30 22:47:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-30 22:47:54,425 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:54,425 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-30 22:47:54,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:47:54,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:54,426 INFO L82 PathProgramCache]: Analyzing trace with hash 183289263, now seen corresponding path program 1 times [2021-08-30 22:47:54,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:54,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853009967] [2021-08-30 22:47:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:54,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:54,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:47:54,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853009967] [2021-08-30 22:47:54,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853009967] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:47:54,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505604156] [2021-08-30 22:47:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:54,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:54,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:47:54,484 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) [2021-08-30 22:47:54,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:47:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:54,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 22:47:54,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:47:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:54,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:47:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:54,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505604156] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:47:54,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:47:54,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-08-30 22:47:54,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241510616] [2021-08-30 22:47:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 22:47:54,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:47:54,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 22:47:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-08-30 22:47:54,657 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-08-30 22:47:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:47:54,691 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-30 22:47:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:47:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-30 22:47:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:47:54,692 INFO L225 Difference]: With dead ends: 19 [2021-08-30 22:47:54,692 INFO L226 Difference]: Without dead ends: 18 [2021-08-30 22:47:54,692 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 34.53ms TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2021-08-30 22:47:54,693 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.55ms IncrementalHoareTripleChecker+Time [2021-08-30 22:47:54,693 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 20.55ms Time] [2021-08-30 22:47:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-30 22:47:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-30 22:47:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-08-30 22:47:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-08-30 22:47:54,696 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2021-08-30 22:47:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:47:54,697 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-08-30 22:47:54,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-08-30 22:47:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-08-30 22:47:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 22:47:54,697 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:54,698 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2021-08-30 22:47:54,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:47:54,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:54,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:54,915 INFO L82 PathProgramCache]: Analyzing trace with hash -473619163, now seen corresponding path program 2 times [2021-08-30 22:47:54,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:54,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421771716] [2021-08-30 22:47:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:54,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:55,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:47:55,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421771716] [2021-08-30 22:47:55,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421771716] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:47:55,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378209717] [2021-08-30 22:47:55,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:47:55,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:55,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:47:55,013 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) [2021-08-30 22:47:55,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 22:47:55,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 22:47:55,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:47:55,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 22:47:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:47:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:55,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:47:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:55,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378209717] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:47:55,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:47:55,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-08-30 22:47:55,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132844539] [2021-08-30 22:47:55,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 22:47:55,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:47:55,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 22:47:55,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-08-30 22:47:55,258 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 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) [2021-08-30 22:47:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:47:55,325 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-08-30 22:47:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 22:47:55,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-30 22:47:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:47:55,327 INFO L225 Difference]: With dead ends: 37 [2021-08-30 22:47:55,327 INFO L226 Difference]: Without dead ends: 36 [2021-08-30 22:47:55,329 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 104.55ms TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2021-08-30 22:47:55,333 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.03ms IncrementalHoareTripleChecker+Time [2021-08-30 22:47:55,334 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 42.03ms Time] [2021-08-30 22:47:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-30 22:47:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-30 22:47:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 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) [2021-08-30 22:47:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-08-30 22:47:55,343 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2021-08-30 22:47:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:47:55,343 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-08-30 22:47:55,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 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) [2021-08-30 22:47:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-08-30 22:47:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-30 22:47:55,345 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:55,346 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2021-08-30 22:47:55,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 22:47:55,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-30 22:47:55,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1301710747, now seen corresponding path program 3 times [2021-08-30 22:47:55,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:55,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872479656] [2021-08-30 22:47:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:55,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:55,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:47:55,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872479656] [2021-08-30 22:47:55,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872479656] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:47:55,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331965804] [2021-08-30 22:47:55,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 22:47:55,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:47:55,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:47:55,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 22:47:55,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-30 22:47:55,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:47:55,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-30 22:47:55,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:47:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:55,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:47:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:56,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331965804] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:47:56,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:47:56,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-08-30 22:47:56,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308703915] [2021-08-30 22:47:56,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-30 22:47:56,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:47:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-30 22:47:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=660, Unknown=0, NotChecked=0, Total=1190 [2021-08-30 22:47:56,207 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 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) [2021-08-30 22:47:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:47:56,303 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2021-08-30 22:47:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-30 22:47:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-30 22:47:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:47:56,304 INFO L225 Difference]: With dead ends: 73 [2021-08-30 22:47:56,304 INFO L226 Difference]: Without dead ends: 72 [2021-08-30 22:47:56,305 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 247.41ms TimeCoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2021-08-30 22:47:56,305 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.65ms IncrementalHoareTripleChecker+Time [2021-08-30 22:47:56,305 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [18 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 71.65ms Time] [2021-08-30 22:47:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-30 22:47:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-08-30 22:47:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 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) [2021-08-30 22:47:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-08-30 22:47:56,310 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 35 [2021-08-30 22:47:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:47:56,311 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-08-30 22:47:56,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 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) [2021-08-30 22:47:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-08-30 22:47:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-30 22:47:56,312 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:56,312 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1] [2021-08-30 22:47:56,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 22:47:56,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:56,521 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash -394055963, now seen corresponding path program 4 times [2021-08-30 22:47:56,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:56,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983803588] [2021-08-30 22:47:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:56,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:47:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:56,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:47:56,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983803588] [2021-08-30 22:47:56,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983803588] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:47:56,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779767038] [2021-08-30 22:47:56,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-30 22:47:56,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:56,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:47:56,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:47:56,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 22:47:56,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-30 22:47:56,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:47:56,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-30 22:47:56,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:47:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:57,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:47:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:47:57,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779767038] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:47:57,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:47:57,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-08-30 22:47:57,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128284100] [2021-08-30 22:47:57,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-08-30 22:47:57,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:47:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-08-30 22:47:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2090, Invalid=2880, Unknown=0, NotChecked=0, Total=4970 [2021-08-30 22:47:57,996 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 71 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 71 states have internal predecessors, (209), 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) [2021-08-30 22:47:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:47:58,147 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2021-08-30 22:47:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-30 22:47:58,149 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 71 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-08-30 22:47:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:47:58,152 INFO L225 Difference]: With dead ends: 97 [2021-08-30 22:47:58,152 INFO L226 Difference]: Without dead ends: 96 [2021-08-30 22:47:58,154 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2616 ImplicationChecksByTransitivity, 793.11ms TimeCoverageRelationStatistics Valid=2161, Invalid=2951, Unknown=0, NotChecked=0, Total=5112 [2021-08-30 22:47:58,155 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.06ms IncrementalHoareTripleChecker+Time [2021-08-30 22:47:58,155 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 166 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [13 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 117.06ms Time] [2021-08-30 22:47:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-30 22:47:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-08-30 22:47:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 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) [2021-08-30 22:47:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-08-30 22:47:58,166 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 71 [2021-08-30 22:47:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:47:58,168 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-08-30 22:47:58,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 71 states have internal predecessors, (209), 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) [2021-08-30 22:47:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-08-30 22:47:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-08-30 22:47:58,169 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:47:58,169 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1] [2021-08-30 22:47:58,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 22:47:58,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:47:58,390 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:47:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:47:58,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1545421339, now seen corresponding path program 5 times [2021-08-30 22:47:58,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:47:58,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397745418] [2021-08-30 22:47:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:47:58,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:47:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 22:47:58,441 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 22:47:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 22:47:58,516 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 22:47:58,516 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 22:47:58,517 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-08-30 22:47:58,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-08-30 22:47:58,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 22:47:58,523 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:47:58,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:47:58 BoogieIcfgContainer [2021-08-30 22:47:58,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:47:58,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:47:58,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:47:58,582 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:47:58,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:47:53" (3/4) ... [2021-08-30 22:47:58,584 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 22:47:58,620 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:47:58,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:47:58,621 INFO L158 Benchmark]: Toolchain (without parser) took 5069.19ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 37.5MB in the beginning and 65.5MB in the end (delta: -28.0MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,621 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:47:58,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.04ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 28.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.64ms. Allocated memory is still 58.7MB. Free memory was 28.2MB in the beginning and 26.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,621 INFO L158 Benchmark]: Boogie Preprocessor took 38.75ms. Allocated memory is still 58.7MB. Free memory was 26.7MB in the beginning and 42.4MB in the end (delta: -15.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,622 INFO L158 Benchmark]: RCFGBuilder took 177.50ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 34.3MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,622 INFO L158 Benchmark]: TraceAbstraction took 4629.26ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 33.8MB in the beginning and 32.8MB in the end (delta: 968.5kB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,622 INFO L158 Benchmark]: Witness Printer took 38.29ms. Allocated memory is still 88.1MB. Free memory was 32.8MB in the beginning and 65.5MB in the end (delta: -32.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:47:58,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.04ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 28.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.64ms. Allocated memory is still 58.7MB. Free memory was 28.2MB in the beginning and 26.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.75ms. Allocated memory is still 58.7MB. Free memory was 26.7MB in the beginning and 42.4MB in the end (delta: -15.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 177.50ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 34.3MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4629.26ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 33.8MB in the beginning and 32.8MB in the end (delta: 968.5kB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Witness Printer took 38.29ms. Allocated memory is still 88.1MB. Free memory was 32.8MB in the beginning and 65.5MB in the end (delta: -32.7MB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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==1 && y==1)) [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] x+y - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4530.33ms, OverallIterations: 7, TraceHistogramMax: 31, EmptinessCheckTime: 10.99ms, AutomataDifference: 521.14ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.23ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 334.68ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 252.02ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 384 IncrementalHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 0 mSDtfsCounter, 384 mSolverCounterSat, 6.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3192 ImplicationChecksByTransitivity, 1201.53ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=6, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 38.34ms AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.33ms SsaConstructionTime, 245.79ms SatisfiabilityAnalysisTime, 2514.67ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 8 NumberOfNonLiveVariables, 415 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2760 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-30 22:47:58,652 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...