./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Et1_true.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/Et1_true.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 12a23acd81bac6be96fab6b12e781f8cdea13b9704294dc24053fce5ee3c8327 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:24:26,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:24:26,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:24:26,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:24:26,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:24:26,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:24:26,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:24:26,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:24:26,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:24:26,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:24:26,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:24:26,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:24:26,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:24:26,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:24:26,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:24:26,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:24:26,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:24:26,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:24:26,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:24:26,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:24:26,568 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:24:26,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:24:26,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:24:26,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:24:26,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:24:26,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:24:26,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:24:26,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:24:26,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:24:26,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:24:26,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:24:26,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:24:26,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:24:26,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:24:26,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:24:26,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:24:26,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:24:26,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:24:26,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:24:26,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:24:26,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:24:26,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:24:26,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:24:26,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:24:26,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:24:26,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:24:26,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:24:26,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:24:26,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:24:26,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:24:26,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:24:26,622 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:24:26,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:24:26,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:24:26,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:24:26,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:24:26,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:24:26,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:24:26,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:24:26,624 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:24:26,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:24:26,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:24:26,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:24:26,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:24:26,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:24:26,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:24:26,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:24:26,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:24:26,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:24:26,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:24:26,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:24:26,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:24:26,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:24:26,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12a23acd81bac6be96fab6b12e781f8cdea13b9704294dc24053fce5ee3c8327 [2022-07-23 13:24:26,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:24:26,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:24:26,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:24:26,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:24:26,873 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:24:26,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Et1_true.c [2022-07-23 13:24:26,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd88a688/0dfd030b1c17412dbb275682e6fd0d2e/FLAG083dc5cbb [2022-07-23 13:24:27,289 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:24:27,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Et1_true.c [2022-07-23 13:24:27,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd88a688/0dfd030b1c17412dbb275682e6fd0d2e/FLAG083dc5cbb [2022-07-23 13:24:27,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd88a688/0dfd030b1c17412dbb275682e6fd0d2e [2022-07-23 13:24:27,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:24:27,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:24:27,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:24:27,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:24:27,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:24:27,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d43a7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27, skipping insertion in model container [2022-07-23 13:24:27,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:24:27,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:24:27,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:24:27,894 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:24:27,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:24:27,917 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:24:27,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27 WrapperNode [2022-07-23 13:24:27,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:24:27,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:24:27,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:24:27,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:24:27,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,945 INFO L137 Inliner]: procedures = 6, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-07-23 13:24:27,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:24:27,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:24:27,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:24:27,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:24:27,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:24:27,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:24:27,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:24:27,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:24:27,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (1/1) ... [2022-07-23 13:24:27,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:24:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:24:27,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:24:28,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:24:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure random [2022-07-23 13:24:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure random [2022-07-23 13:24:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure loop [2022-07-23 13:24:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure loop [2022-07-23 13:24:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:24:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:24:28,091 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:24:28,093 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:24:28,205 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:24:28,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:24:28,212 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 13:24:28,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:28 BoogieIcfgContainer [2022-07-23 13:24:28,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:24:28,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:24:28,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:24:28,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:24:28,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:24:27" (1/3) ... [2022-07-23 13:24:28,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469a717e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:24:28, skipping insertion in model container [2022-07-23 13:24:28,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:27" (2/3) ... [2022-07-23 13:24:28,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469a717e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:24:28, skipping insertion in model container [2022-07-23 13:24:28,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:28" (3/3) ... [2022-07-23 13:24:28,222 INFO L111 eAbstractionObserver]: Analyzing ICFG Et1_true.c [2022-07-23 13:24:28,236 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:24:28,236 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-23 13:24:28,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:24:28,285 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42adcddf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f8a9ce [2022-07-23 13:24:28,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-07-23 13:24:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:24:28,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 13:24:28,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:28,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 13:24:28,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting randomErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [randomErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, randomErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-07-23 13:24:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1688732723, now seen corresponding path program 1 times [2022-07-23 13:24:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:28,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577642604] [2022-07-23 13:24:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 13:24:28,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 13:24:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 13:24:28,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 13:24:28,446 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-23 13:24:28,448 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location randomErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-07-23 13:24:28,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location randomErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-07-23 13:24:28,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-07-23 13:24:28,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-07-23 13:24:28,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-07-23 13:24:28,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-07-23 13:24:28,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-07-23 13:24:28,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-07-23 13:24:28,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-07-23 13:24:28,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-07-23 13:24:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:24:28,459 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-23 13:24:28,463 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 13:24:28,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:24:28 BoogieIcfgContainer [2022-07-23 13:24:28,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 13:24:28,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 13:24:28,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 13:24:28,483 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 13:24:28,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:28" (3/4) ... [2022-07-23 13:24:28,485 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-23 13:24:28,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 13:24:28,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 13:24:28,523 INFO L158 Benchmark]: Toolchain (without parser) took 803.13ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.9MB in the beginning and 68.9MB in the end (delta: -15.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:28,524 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:28,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.24ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.6MB in the beginning and 96.4MB in the end (delta: -42.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-23 13:24:28,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.30ms. Allocated memory is still 119.5MB. Free memory was 96.4MB in the beginning and 95.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:28,525 INFO L158 Benchmark]: Boogie Preprocessor took 13.82ms. Allocated memory is still 119.5MB. Free memory was 95.1MB in the beginning and 94.3MB in the end (delta: 872.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:28,525 INFO L158 Benchmark]: RCFGBuilder took 252.39ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 84.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 13:24:28,526 INFO L158 Benchmark]: TraceAbstraction took 263.77ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 70.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 13:24:28,526 INFO L158 Benchmark]: Witness Printer took 39.93ms. Allocated memory is still 119.5MB. Free memory was 70.3MB in the beginning and 68.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:28,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.24ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.6MB in the beginning and 96.4MB in the end (delta: -42.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.30ms. Allocated memory is still 119.5MB. Free memory was 96.4MB in the beginning and 95.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.82ms. Allocated memory is still 119.5MB. Free memory was 95.1MB in the beginning and 94.3MB in the end (delta: 872.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.39ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 84.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 263.77ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 70.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 39.93ms. Allocated memory is still 119.5MB. Free memory was 70.3MB in the beginning and 68.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 31]: integer overflow possible integer overflow possible We found a FailurePath: [L21] int x = __VERIFIER_nondet_int(); [L22] int y = __VERIFIER_nondet_int(); [L23] int z = __VERIFIER_nondet_int(); [L24] CALL random() [L29] int x = __VERIFIER_nondet_int(); [L30] COND TRUE x < 0 VAL [x=-2147483648] [L31] -x VAL [x=-2147483648] - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - 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 3 procedures, 40 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-23 13:24:28,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)