./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 35987657 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-?-3598765 [2022-07-22 00:45:41,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:45:41,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:45:41,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:45:41,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:45:41,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:45:41,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:45:41,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:45:41,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:45:41,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:45:41,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:45:41,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:45:41,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:45:41,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:45:41,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:45:41,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:45:41,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:45:41,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:45:41,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:45:41,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:45:41,527 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:45:41,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:45:41,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:45:41,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:45:41,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:45:41,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:45:41,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:45:41,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:45:41,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:45:41,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:45:41,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:45:41,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:45:41,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:45:41,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:45:41,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:45:41,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:45:41,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:45:41,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:45:41,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:45:41,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:45:41,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:45:41,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:45:41,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-22 00:45:41,588 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:45:41,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:45:41,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:45:41,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:45:41,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:45:41,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:45:41,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:45:41,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:45:41,591 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:45:41,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:45:41,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 00:45:41,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:45:41,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:45:41,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 00:45:41,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:45:41,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:45:41,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:45:41,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:45:41,602 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:45:41,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 00:45:41,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:45:41,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:45:41,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:45:41,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:45:41,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:45:41,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:45:41,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:45:41,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:45:41,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:45:41,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:45:41,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:45:41,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:45:41,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:45:41,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb [2022-07-22 00:45:41,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:45:41,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:45:41,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:45:41,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:45:41,973 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:45:41,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_2.c [2022-07-22 00:45:42,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452ba2200/cadc6366983f4b9a885c664d58c73e59/FLAG68004eca8 [2022-07-22 00:45:42,414 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:45:42,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c [2022-07-22 00:45:42,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452ba2200/cadc6366983f4b9a885c664d58c73e59/FLAG68004eca8 [2022-07-22 00:45:42,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452ba2200/cadc6366983f4b9a885c664d58c73e59 [2022-07-22 00:45:42,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:45:42,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:45:42,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:45:42,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:45:42,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:45:42,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:45:42" (1/1) ... [2022-07-22 00:45:42,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbe243f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:42, skipping insertion in model container [2022-07-22 00:45:42,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:45:42" (1/1) ... [2022-07-22 00:45:42,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:45:42,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:45:42,986 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2022-07-22 00:45:42,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:45:43,006 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:45:43,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2022-07-22 00:45:43,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:45:43,074 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:45:43,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43 WrapperNode [2022-07-22 00:45:43,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:45:43,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:45:43,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:45:43,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:45:43,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,112 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2022-07-22 00:45:43,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:45:43,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:45:43,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:45:43,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:45:43,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:45:43,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:45:43,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:45:43,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:45:43,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (1/1) ... [2022-07-22 00:45:43,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:45:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:45:43,189 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) [2022-07-22 00:45:43,215 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 [2022-07-22 00:45:43,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 00:45:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 00:45:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:45:43,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:45:43,293 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:45:43,294 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:45:43,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:45:43,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:45:43,429 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 00:45:43,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:45:43 BoogieIcfgContainer [2022-07-22 00:45:43,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:45:43,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:45:43,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:45:43,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:45:43,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:45:42" (1/3) ... [2022-07-22 00:45:43,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478f52fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:45:43, skipping insertion in model container [2022-07-22 00:45:43,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:45:43" (2/3) ... [2022-07-22 00:45:43,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478f52fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:45:43, skipping insertion in model container [2022-07-22 00:45:43,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:45:43" (3/3) ... [2022-07-22 00:45:43,438 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2022-07-22 00:45:43,458 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:45:43,458 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 00:45:43,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:45:43,501 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@3fe413a6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b122112 [2022-07-22 00:45:43,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 00:45:43,505 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) [2022-07-22 00:45:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-22 00:45:43,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:43,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-22 00:45:43,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:45:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:43,516 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-22 00:45:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:43,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340064776] [2022-07-22 00:45:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:45:43,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340064776] [2022-07-22 00:45:43,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340064776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:45:43,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:45:43,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 00:45:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310443825] [2022-07-22 00:45:43,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:45:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 00:45:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:43,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 00:45:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:45:43,741 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) [2022-07-22 00:45:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:43,800 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-07-22 00:45:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 00:45:43,802 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 [2022-07-22 00:45:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:43,808 INFO L225 Difference]: With dead ends: 44 [2022-07-22 00:45:43,823 INFO L226 Difference]: Without dead ends: 11 [2022-07-22 00:45:43,826 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 [2022-07-22 00:45:43,829 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:43,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:45:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-22 00:45:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-22 00:45:43,861 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) [2022-07-22 00:45:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-22 00:45:43,868 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2022-07-22 00:45:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:43,869 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-22 00:45:43,869 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) [2022-07-22 00:45:43,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-22 00:45:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 00:45:43,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:43,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 00:45:43,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:45:43,870 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)] === [2022-07-22 00:45:43,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash 28693763, now seen corresponding path program 1 times [2022-07-22 00:45:43,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:43,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43964561] [2022-07-22 00:45:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:43,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:45:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43964561] [2022-07-22 00:45:43,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43964561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:45:43,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:45:43,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 00:45:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077868937] [2022-07-22 00:45:43,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:45:43,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 00:45:43,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 00:45:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:45:43,921 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) [2022-07-22 00:45:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:43,936 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-07-22 00:45:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 00:45:43,937 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 [2022-07-22 00:45:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:43,938 INFO L225 Difference]: With dead ends: 11 [2022-07-22 00:45:43,938 INFO L226 Difference]: Without dead ends: 10 [2022-07-22 00:45:43,938 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 [2022-07-22 00:45:43,940 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:45:43,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:45:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-22 00:45:43,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-22 00:45:43,945 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) [2022-07-22 00:45:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-22 00:45:43,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-07-22 00:45:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:43,947 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-22 00:45:43,947 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) [2022-07-22 00:45:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-22 00:45:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 00:45:43,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:43,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 00:45:43,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 00:45:43,952 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)] === [2022-07-22 00:45:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2022-07-22 00:45:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240502828] [2022-07-22 00:45:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:45:44,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:44,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240502828] [2022-07-22 00:45:44,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240502828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:45:44,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:45:44,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 00:45:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246535100] [2022-07-22 00:45:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:45:44,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 00:45:44,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 00:45:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:45:44,011 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) [2022-07-22 00:45:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:44,018 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-07-22 00:45:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 00:45:44,019 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 [2022-07-22 00:45:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:44,021 INFO L225 Difference]: With dead ends: 10 [2022-07-22 00:45:44,021 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 00:45:44,022 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 [2022-07-22 00:45:44,023 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 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 [2022-07-22 00:45:44,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:45:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 00:45:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 00:45:44,027 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) [2022-07-22 00:45:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-22 00:45:44,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-07-22 00:45:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:44,029 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-22 00:45:44,029 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) [2022-07-22 00:45:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-22 00:45:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 00:45:44,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:45:44,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 00:45:44,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 00:45:44,030 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)] === [2022-07-22 00:45:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:45:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 889693384, now seen corresponding path program 1 times [2022-07-22 00:45:44,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:45:44,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143809873] [2022-07-22 00:45:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:45:44,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:45:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:45:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:45:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:45:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143809873] [2022-07-22 00:45:44,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143809873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:45:44,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:45:44,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 00:45:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676685830] [2022-07-22 00:45:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:45:44,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 00:45:44,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:45:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 00:45:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 00:45:44,069 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) [2022-07-22 00:45:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:45:44,075 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-07-22 00:45:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 00:45:44,076 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 [2022-07-22 00:45:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:45:44,076 INFO L225 Difference]: With dead ends: 9 [2022-07-22 00:45:44,076 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 00:45:44,077 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 [2022-07-22 00:45:44,083 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 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 [2022-07-22 00:45:44,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:45:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 00:45:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 00:45:44,088 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) [2022-07-22 00:45:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 00:45:44,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-07-22 00:45:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:45:44,089 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 00:45:44,089 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) [2022-07-22 00:45:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 00:45:44,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 00:45:44,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-07-22 00:45:44,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-07-22 00:45:44,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-07-22 00:45:44,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-07-22 00:45:44,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 00:45:44,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 00:45:44,103 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-07-22 00:45:44,104 INFO L899 garLoopResultBuilder]: For program point L27-1(lines 21 33) no Hoare annotation was computed. [2022-07-22 00:45:44,104 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2022-07-22 00:45:44,104 INFO L902 garLoopResultBuilder]: At program point L48(lines 36 49) the Hoare annotation is: true [2022-07-22 00:45:44,104 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-07-22 00:45:44,105 INFO L902 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2022-07-22 00:45:44,105 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 46) no Hoare annotation was computed. [2022-07-22 00:45:44,106 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 46) no Hoare annotation was computed. [2022-07-22 00:45:44,106 INFO L902 garLoopResultBuilder]: At program point L32(lines 20 33) the Hoare annotation is: true [2022-07-22 00:45:44,106 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 00:45:44,106 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-07-22 00:45:44,107 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 00:45:44,107 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 00:45:44,108 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-07-22 00:45:44,108 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2022-07-22 00:45:44,108 INFO L899 garLoopResultBuilder]: For program point L24-2(line 24) no Hoare annotation was computed. [2022-07-22 00:45:44,108 INFO L899 garLoopResultBuilder]: For program point L24-4(lines 21 33) no Hoare annotation was computed. [2022-07-22 00:45:44,108 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-07-22 00:45:44,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-07-22 00:45:44,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 00:45:44,109 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-07-22 00:45:44,109 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-22 00:45:44,110 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-07-22 00:45:44,113 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-22 00:45:44,118 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 00:45:44,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:45:44 BoogieIcfgContainer [2022-07-22 00:45:44,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 00:45:44,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 00:45:44,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 00:45:44,132 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 00:45:44,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:45:43" (3/4) ... [2022-07-22 00:45:44,137 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 00:45:44,148 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-22 00:45:44,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-22 00:45:44,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 00:45:44,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 00:45:44,180 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 00:45:44,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 00:45:44,181 INFO L158 Benchmark]: Toolchain (without parser) took 1335.73ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 32.3MB in the end (delta: 831.4kB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-07-22 00:45:44,181 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:45:44,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.70ms. Allocated memory is still 54.5MB. Free memory was 32.9MB in the beginning and 37.7MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 00:45:44,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.66ms. Allocated memory is still 54.5MB. Free memory was 37.7MB in the beginning and 36.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:45:44,182 INFO L158 Benchmark]: Boogie Preprocessor took 39.60ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 35.2MB in the end (delta: 900.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:45:44,182 INFO L158 Benchmark]: RCFGBuilder took 277.32ms. Allocated memory is still 54.5MB. Free memory was 35.0MB in the beginning and 25.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 00:45:44,182 INFO L158 Benchmark]: TraceAbstraction took 699.31ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.0MB in the beginning and 34.8MB in the end (delta: -9.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-22 00:45:44,182 INFO L158 Benchmark]: Witness Printer took 48.31ms. Allocated memory is still 67.1MB. Free memory was 34.8MB in the beginning and 32.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 00:45:44,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.70ms. Allocated memory is still 54.5MB. Free memory was 32.9MB in the beginning and 37.7MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.66ms. Allocated memory is still 54.5MB. Free memory was 37.7MB in the beginning and 36.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.60ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 35.2MB in the end (delta: 900.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 277.32ms. Allocated memory is still 54.5MB. Free memory was 35.0MB in the beginning and 25.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 699.31ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.0MB in the beginning and 34.8MB in the end (delta: -9.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Witness Printer took 48.31ms. Allocated memory is still 67.1MB. Free memory was 34.8MB in the beginning and 32.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. 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: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 39 mSDtfsCounter, 19 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-22 00:45:44,216 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 Result: TRUE