./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 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/bitvector/gcd_2.c -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 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:43:40,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:43:40,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:43:40,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:43:40,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:43:40,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:43:40,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:43:40,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:43:40,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:43:40,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:43:40,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:43:40,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:43:40,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:43:40,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:43:40,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:43:40,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:43:40,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:43:40,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:43:40,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:43:40,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:43:40,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:43:40,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:43:40,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:43:40,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:43:40,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:43:40,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:43:40,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:43:40,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:43:40,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:43:40,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:43:40,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:43:40,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:43:40,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:43:40,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:43:40,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:43:40,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:43:40,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:43:40,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:43:40,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:43:40,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:43:40,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:43:40,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-15 13:43:40,736 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:43:40,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:43:40,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:43:40,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:43:40,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:43:40,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:43:40,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:43:40,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:43:40,739 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:43:40,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:43:40,740 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:43:40,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:43:40,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:43:40,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:43:40,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:43:40,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 13:43:40,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:43:40,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 13:43:40,742 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 13:43:40,742 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:43:40,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 13:43:40,742 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:43:40,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 13:43:40,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:43:40,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:43:40,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:43:40,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:43:40,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:43:40,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:43:40,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 13:43:40,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:43:40,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:43:40,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:43:40,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 13:43:40,745 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:43:40,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:43:40,746 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:43:40,746 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb [2023-02-15 13:43:40,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:43:40,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:43:40,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:43:40,971 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:43:40,971 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:43:40,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_2.c [2023-02-15 13:43:42,091 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:43:42,287 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:43:42,288 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c [2023-02-15 13:43:42,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c261ccf3b/7c0fa887f7b94bd6bb1daa0638af07c1/FLAGb42317544 [2023-02-15 13:43:42,311 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c261ccf3b/7c0fa887f7b94bd6bb1daa0638af07c1 [2023-02-15 13:43:42,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:43:42,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:43:42,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:43:42,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:43:42,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:43:42,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9ca307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42, skipping insertion in model container [2023-02-15 13:43:42,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:43:42,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:43:42,490 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2023-02-15 13:43:42,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:43:42,514 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:43:42,526 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2023-02-15 13:43:42,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:43:42,541 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:43:42,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42 WrapperNode [2023-02-15 13:43:42,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:43:42,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:43:42,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:43:42,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:43:42,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,574 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-02-15 13:43:42,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:43:42,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:43:42,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:43:42,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:43:42,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:43:42,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:43:42,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:43:42,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:43:42,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (1/1) ... [2023-02-15 13:43:42,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:43:42,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:43:42,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 13:43:42,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 13:43:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 13:43:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 13:43:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:43:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:43:42,751 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:43:42,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:43:42,945 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:43:42,950 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:43:42,959 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 13:43:42,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:43:42 BoogieIcfgContainer [2023-02-15 13:43:42,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:43:42,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:43:42,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:43:42,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:43:42,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:43:42" (1/3) ... [2023-02-15 13:43:42,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fbc9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:43:42, skipping insertion in model container [2023-02-15 13:43:42,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:42" (2/3) ... [2023-02-15 13:43:42,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fbc9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:43:42, skipping insertion in model container [2023-02-15 13:43:42,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:43:42" (3/3) ... [2023-02-15 13:43:42,970 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2023-02-15 13:43:42,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:43:42,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-15 13:43:43,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:43:43,035 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ff93ff5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:43:43,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-15 13:43:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:43:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-15 13:43:43,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:43:43,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-15 13:43:43,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 13:43:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:43:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2023-02-15 13:43:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:43:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423416137] [2023-02-15 13:43:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:43:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:43:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:43:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:43:43,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:43:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423416137] [2023-02-15 13:43:43,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423416137] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:43:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:43:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:43:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376534446] [2023-02-15 13:43:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:43:43,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:43:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:43:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:43:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,356 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 22 states have internal predecessors, (28), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:43:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:43:43,416 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2023-02-15 13:43:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:43:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-02-15 13:43:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:43:43,425 INFO L225 Difference]: With dead ends: 33 [2023-02-15 13:43:43,425 INFO L226 Difference]: Without dead ends: 11 [2023-02-15 13:43:43,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,434 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:43:43,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:43:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-15 13:43:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-15 13:43:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:43:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-02-15 13:43:43,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2023-02-15 13:43:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:43:43,460 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-02-15 13:43:43,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:43:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-02-15 13:43:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-15 13:43:43,462 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:43:43,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:43:43,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:43:43,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 13:43:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:43:43,464 INFO L85 PathProgramCache]: Analyzing trace with hash 28693763, now seen corresponding path program 1 times [2023-02-15 13:43:43,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:43:43,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836670786] [2023-02-15 13:43:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:43:43,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:43:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:43:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:43:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:43:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836670786] [2023-02-15 13:43:43,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836670786] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:43:43,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:43:43,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:43:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779815919] [2023-02-15 13:43:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:43:43,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:43:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:43:43,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:43:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,584 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. 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) [2023-02-15 13:43:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:43:43,598 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-02-15 13:43:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:43:43,599 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 [2023-02-15 13:43:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:43:43,600 INFO L225 Difference]: With dead ends: 11 [2023-02-15 13:43:43,600 INFO L226 Difference]: Without dead ends: 10 [2023-02-15 13:43:43,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,607 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:43:43,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:43:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-15 13:43:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-15 13:43:43,612 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) [2023-02-15 13:43:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-02-15 13:43:43,613 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2023-02-15 13:43:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:43:43,614 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-02-15 13:43:43,614 INFO L496 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) [2023-02-15 13:43:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-02-15 13:43:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-15 13:43:43,619 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:43:43,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:43:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 13:43:43,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 13:43:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:43:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2023-02-15 13:43:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:43:43,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954003847] [2023-02-15 13:43:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:43:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:43:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:43:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:43:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:43:43,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954003847] [2023-02-15 13:43:43,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954003847] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:43:43,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:43:43,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:43:43,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782760917] [2023-02-15 13:43:43,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:43:43,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:43:43,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:43:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:43:43,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,681 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. 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) [2023-02-15 13:43:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:43:43,689 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2023-02-15 13:43:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:43:43,690 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 [2023-02-15 13:43:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:43:43,691 INFO L225 Difference]: With dead ends: 10 [2023-02-15 13:43:43,691 INFO L226 Difference]: Without dead ends: 9 [2023-02-15 13:43:43,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,697 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:43:43,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:43:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-15 13:43:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-15 13:43:43,702 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) [2023-02-15 13:43:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-02-15 13:43:43,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-02-15 13:43:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:43:43,703 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-02-15 13:43:43,703 INFO L496 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) [2023-02-15 13:43:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-02-15 13:43:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:43:43,704 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:43:43,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:43:43,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 13:43:43,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 13:43:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:43:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash 889693384, now seen corresponding path program 1 times [2023-02-15 13:43:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:43:43,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205944412] [2023-02-15 13:43:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:43:43,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:43:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:43:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:43:43,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:43:43,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205944412] [2023-02-15 13:43:43,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205944412] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:43:43,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:43:43,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:43:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721136096] [2023-02-15 13:43:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:43:43,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:43:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:43:43,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:43:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,773 INFO L87 Difference]: Start difference. First operand 9 states and 9 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) [2023-02-15 13:43:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:43:43,776 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2023-02-15 13:43:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:43:43,777 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 [2023-02-15 13:43:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:43:43,777 INFO L225 Difference]: With dead ends: 9 [2023-02-15 13:43:43,777 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 13:43:43,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:43:43,779 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:43:43,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:43:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 13:43:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 13:43:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:43:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 13:43:43,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2023-02-15 13:43:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:43:43,781 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 13:43:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:43:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 13:43:43,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 13:43:43,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-15 13:43:43,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-15 13:43:43,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-15 13:43:43,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-15 13:43:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 13:43:43,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 13:43:43,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-02-15 13:43:43,797 INFO L902 garLoopResultBuilder]: At program point L27-1(lines 27 31) the Hoare annotation is: true [2023-02-15 13:43:43,797 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2023-02-15 13:43:43,797 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-02-15 13:43:43,797 INFO L902 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2023-02-15 13:43:43,798 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 46) no Hoare annotation was computed. [2023-02-15 13:43:43,798 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 46) no Hoare annotation was computed. [2023-02-15 13:43:43,798 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 36 49) the Hoare annotation is: true [2023-02-15 13:43:43,798 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 13:43:43,798 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2023-02-15 13:43:43,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 13:43:43,799 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2023-02-15 13:43:43,799 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2023-02-15 13:43:43,799 INFO L899 garLoopResultBuilder]: For program point L24-2(line 24) no Hoare annotation was computed. [2023-02-15 13:43:43,799 INFO L899 garLoopResultBuilder]: For program point L24-4(lines 21 33) no Hoare annotation was computed. [2023-02-15 13:43:43,800 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-02-15 13:43:43,800 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2023-02-15 13:43:43,800 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 13:43:43,800 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-02-15 13:43:43,800 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-15 13:43:43,800 INFO L902 garLoopResultBuilder]: At program point gcd_test_returnLabel#1(lines 20 33) the Hoare annotation is: true [2023-02-15 13:43:43,801 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 13:43:43,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-02-15 13:43:43,804 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-02-15 13:43:43,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 13:43:43,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:43:43 BoogieIcfgContainer [2023-02-15 13:43:43,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 13:43:43,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 13:43:43,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 13:43:43,816 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 13:43:43,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:43:42" (3/4) ... [2023-02-15 13:43:43,819 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 13:43:43,831 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-02-15 13:43:43,831 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-02-15 13:43:43,831 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-15 13:43:43,831 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 13:43:43,832 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 13:43:43,861 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 13:43:43,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 13:43:43,862 INFO L158 Benchmark]: Toolchain (without parser) took 1547.90ms. Allocated memory is still 159.4MB. Free memory was 130.3MB in the beginning and 93.2MB in the end (delta: 37.1MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2023-02-15 13:43:43,862 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory was 102.3MB in the beginning and 102.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:43:43,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.62ms. Allocated memory is still 159.4MB. Free memory was 130.1MB in the beginning and 121.5MB in the end (delta: 8.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-02-15 13:43:43,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.31ms. Allocated memory is still 159.4MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:43:43,863 INFO L158 Benchmark]: Boogie Preprocessor took 24.42ms. Allocated memory is still 159.4MB. Free memory was 119.4MB in the beginning and 118.8MB in the end (delta: 670.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:43:43,863 INFO L158 Benchmark]: RCFGBuilder took 361.90ms. Allocated memory is still 159.4MB. Free memory was 118.8MB in the beginning and 108.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 13:43:43,864 INFO L158 Benchmark]: TraceAbstraction took 851.23ms. Allocated memory is still 159.4MB. Free memory was 107.6MB in the beginning and 95.3MB in the end (delta: 12.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-02-15 13:43:43,864 INFO L158 Benchmark]: Witness Printer took 46.11ms. Allocated memory is still 159.4MB. Free memory was 95.3MB in the beginning and 93.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:43:43,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory was 102.3MB in the beginning and 102.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.62ms. Allocated memory is still 159.4MB. Free memory was 130.1MB in the beginning and 121.5MB in the end (delta: 8.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.31ms. Allocated memory is still 159.4MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.42ms. Allocated memory is still 159.4MB. Free memory was 119.4MB in the beginning and 118.8MB in the end (delta: 670.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.90ms. Allocated memory is still 159.4MB. Free memory was 118.8MB in the beginning and 108.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 851.23ms. Allocated memory is still 159.4MB. Free memory was 107.6MB in the beginning and 95.3MB in the end (delta: 12.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 46.11ms. Allocated memory is still 159.4MB. Free memory was 95.3MB in the beginning and 93.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 41 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 7 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-15 13:43:43,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE