./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:25:43,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:25:43,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:25:43,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:25:43,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:25:43,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:25:43,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:25:43,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:25:43,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:25:43,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:25:43,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:25:43,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:25:43,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:25:43,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:25:43,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:25:43,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:25:43,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:25:43,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:25:43,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:25:43,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:25:43,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:25:43,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:25:43,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:25:43,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:25:43,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:25:43,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:25:43,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:25:43,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:25:43,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:25:43,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:25:43,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:25:43,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:25:43,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:25:43,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:25:43,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:25:43,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:25:43,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:25:43,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:25:43,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:25:43,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:25:43,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:25:43,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-22 19:25:43,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:25:43,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:25:43,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:25:43,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:25:43,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:25:43,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:25:43,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:25:43,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:25:43,927 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:25:43,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:25:43,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:25:43,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:25:43,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:25:43,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:25:43,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:25:43,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:25:43,931 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:25:43,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:25:43,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:25:43,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:25:43,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:25:43,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:25:43,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:25:43,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:25:43,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:25:43,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:25:43,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:25:43,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:25:43,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:25:43,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:25:43,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:25:43,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 [2021-12-22 19:25:44,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:25:44,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:25:44,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:25:44,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:25:44,122 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:25:44,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-12-22 19:25:44,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35055f67b/096a0552a1c849d9bf5dfc19c357989a/FLAGace583714 [2021-12-22 19:25:44,530 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:25:44,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-12-22 19:25:44,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35055f67b/096a0552a1c849d9bf5dfc19c357989a/FLAGace583714 [2021-12-22 19:25:44,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35055f67b/096a0552a1c849d9bf5dfc19c357989a [2021-12-22 19:25:44,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:25:44,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:25:44,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:25:44,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:25:44,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:25:44,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:25:44" (1/1) ... [2021-12-22 19:25:44,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ccc519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:44, skipping insertion in model container [2021-12-22 19:25:44,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:25:44" (1/1) ... [2021-12-22 19:25:44,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:25:44,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:25:45,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:25:45,072 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:25:45,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:25:45,089 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:25:45,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45 WrapperNode [2021-12-22 19:25:45,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:25:45,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:25:45,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:25:45,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:25:45,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,113 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2021-12-22 19:25:45,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:25:45,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:25:45,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:25:45,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:25:45,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:25:45,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:25:45,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:25:45,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:25:45,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (1/1) ... [2021-12-22 19:25:45,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:25:45,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:45,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 19:25:45,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 19:25:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:25:45,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:25:45,225 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:25:45,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:25:45,308 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:25:45,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:25:45,317 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 19:25:45,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:25:45 BoogieIcfgContainer [2021-12-22 19:25:45,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:25:45,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:25:45,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:25:45,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:25:45,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:25:44" (1/3) ... [2021-12-22 19:25:45,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0b3fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:25:45, skipping insertion in model container [2021-12-22 19:25:45,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:45" (2/3) ... [2021-12-22 19:25:45,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0b3fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:25:45, skipping insertion in model container [2021-12-22 19:25:45,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:25:45" (3/3) ... [2021-12-22 19:25:45,324 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-12-22 19:25:45,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:25:45,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-22 19:25:45,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:25:45,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 19:25:45,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-22 19:25:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 19:25:45,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:45,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 19:25:45,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-22 19:25:45,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:45,420 INFO L85 PathProgramCache]: Analyzing trace with hash 28699890, now seen corresponding path program 1 times [2021-12-22 19:25:45,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:45,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894683168] [2021-12-22 19:25:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:45,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:45,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894683168] [2021-12-22 19:25:45,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894683168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:45,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:45,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:25:45,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849752512] [2021-12-22 19:25:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:45,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:25:45,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:45,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:25:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:25:45,577 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:45,618 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-12-22 19:25:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:25:45,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 19:25:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:45,625 INFO L225 Difference]: With dead ends: 29 [2021-12-22 19:25:45,626 INFO L226 Difference]: Without dead ends: 11 [2021-12-22 19:25:45,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:25:45,632 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:45,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-22 19:25:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-22 19:25:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-12-22 19:25:45,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-12-22 19:25:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:45,660 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-12-22 19:25:45,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-12-22 19:25:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 19:25:45,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:45,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 19:25:45,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:25:45,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-22 19:25:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 28699945, now seen corresponding path program 1 times [2021-12-22 19:25:45,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:45,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395548949] [2021-12-22 19:25:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:45,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:45,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395548949] [2021-12-22 19:25:45,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395548949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:45,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:45,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:45,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742955857] [2021-12-22 19:25:45,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:45,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:45,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:45,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:45,700 INFO L87 Difference]: Start difference. First operand 11 states and 12 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) [2021-12-22 19:25:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:45,727 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-12-22 19:25:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:45,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 19:25:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:45,728 INFO L225 Difference]: With dead ends: 19 [2021-12-22 19:25:45,728 INFO L226 Difference]: Without dead ends: 18 [2021-12-22 19:25:45,728 INFO L932 BasicCegarLoop]: 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 [2021-12-22 19:25:45,731 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:45,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-22 19:25:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-12-22 19:25:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-12-22 19:25:45,738 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2021-12-22 19:25:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:45,739 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-22 19:25:45,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-12-22 19:25:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:25:45,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:45,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:25:45,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 19:25:45,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-22 19:25:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 889696651, now seen corresponding path program 1 times [2021-12-22 19:25:45,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:45,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374157267] [2021-12-22 19:25:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:45,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:45,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374157267] [2021-12-22 19:25:45,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374157267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:45,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:45,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:45,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135573938] [2021-12-22 19:25:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:45,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:45,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:45,762 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:45,769 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-12-22 19:25:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:45,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 19:25:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:45,770 INFO L225 Difference]: With dead ends: 13 [2021-12-22 19:25:45,770 INFO L226 Difference]: Without dead ends: 12 [2021-12-22 19:25:45,770 INFO L932 BasicCegarLoop]: 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 [2021-12-22 19:25:45,771 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:45,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:45,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-22 19:25:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-22 19:25:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-12-22 19:25:45,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-12-22 19:25:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:45,775 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-22 19:25:45,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-12-22 19:25:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:25:45,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:45,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:25:45,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 19:25:45,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-22 19:25:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash 889698349, now seen corresponding path program 1 times [2021-12-22 19:25:45,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:45,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372922832] [2021-12-22 19:25:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:45,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:45,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372922832] [2021-12-22 19:25:45,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372922832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:45,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:45,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:45,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703905257] [2021-12-22 19:25:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:45,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:45,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:45,792 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:45,801 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-12-22 19:25:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:45,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 19:25:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:45,802 INFO L225 Difference]: With dead ends: 13 [2021-12-22 19:25:45,802 INFO L226 Difference]: Without dead ends: 12 [2021-12-22 19:25:45,803 INFO L932 BasicCegarLoop]: 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 [2021-12-22 19:25:45,804 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:45,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-22 19:25:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-12-22 19:25:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-12-22 19:25:45,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 6 [2021-12-22 19:25:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:45,807 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-12-22 19:25:45,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-12-22 19:25:45,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:25:45,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:45,808 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:45,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 19:25:45,808 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-22 19:25:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 301623087, now seen corresponding path program 1 times [2021-12-22 19:25:45,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:45,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225403803] [2021-12-22 19:25:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:45,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225403803] [2021-12-22 19:25:45,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225403803] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740398890] [2021-12-22 19:25:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:45,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:45,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:45,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:25:45,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:45,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:25:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740398890] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:45,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:45,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-22 19:25:45,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841871437] [2021-12-22 19:25:45,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:45,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:25:45,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:25:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:45,932 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:45,983 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-12-22 19:25:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:25:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 19:25:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:45,985 INFO L225 Difference]: With dead ends: 33 [2021-12-22 19:25:45,986 INFO L226 Difference]: Without dead ends: 32 [2021-12-22 19:25:45,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:45,988 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:45,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-22 19:25:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-12-22 19:25:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-12-22 19:25:45,997 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 8 [2021-12-22 19:25:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:45,998 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-12-22 19:25:45,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-12-22 19:25:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 19:25:45,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:46,003 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2021-12-22 19:25:46,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:46,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:46,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-22 19:25:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1687014999, now seen corresponding path program 2 times [2021-12-22 19:25:46,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:46,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522591937] [2021-12-22 19:25:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:46,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 19:25:46,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:46,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522591937] [2021-12-22 19:25:46,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522591937] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:46,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517139743] [2021-12-22 19:25:46,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:25:46,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:46,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:46,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:46,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:25:46,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 19:25:46,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:46,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:25:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 19:25:46,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 19:25:46,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517139743] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:46,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:46,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-12-22 19:25:46,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688408243] [2021-12-22 19:25:46,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:46,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 19:25:46,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 19:25:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:25:46,406 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:46,433 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-12-22 19:25:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:25:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 19:25:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:46,434 INFO L225 Difference]: With dead ends: 23 [2021-12-22 19:25:46,434 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 19:25:46,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:25:46,435 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:46,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 19:25:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 19:25:46,436 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) [2021-12-22 19:25:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 19:25:46,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-12-22 19:25:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:46,437 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:25:46,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 19:25:46,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 19:25:46,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-22 19:25:46,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-22 19:25:46,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-22 19:25:46,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-22 19:25:46,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:46,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-22 19:25:46,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 19:25:46,749 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-22 19:25:46,749 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 19:25:46,749 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-12-22 19:25:46,749 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|)) [2021-12-22 19:25:46,751 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2021-12-22 19:25:46,751 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 19 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648))) [2021-12-22 19:25:46,751 INFO L858 garLoopResultBuilder]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2021-12-22 19:25:46,751 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 19:25:46,752 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-22 19:25:46,752 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-12-22 19:25:46,752 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 19:25:46,752 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 19:25:46,752 INFO L854 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 2147483647) [2021-12-22 19:25:46,752 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-12-22 19:25:46,752 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-12-22 19:25:46,753 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-22 19:25:46,756 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-12-22 19:25:46,758 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 19:25:46,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:25:46 BoogieIcfgContainer [2021-12-22 19:25:46,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 19:25:46,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:25:46,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:25:46,771 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:25:46,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:25:45" (3/4) ... [2021-12-22 19:25:46,773 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 19:25:46,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 19:25:46,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-22 19:25:46,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 19:25:46,798 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:25:46,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:25:46,798 INFO L158 Benchmark]: Toolchain (without parser) took 1829.25ms. Allocated memory is still 104.9MB. Free memory was 76.8MB in the beginning and 49.3MB in the end (delta: 27.5MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,798 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 79.7MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:25:46,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 119.70ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 68.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.62ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 66.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,799 INFO L158 Benchmark]: Boogie Preprocessor took 15.86ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 65.7MB in the end (delta: 936.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,799 INFO L158 Benchmark]: RCFGBuilder took 187.92ms. Allocated memory is still 104.9MB. Free memory was 65.7MB in the beginning and 57.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,800 INFO L158 Benchmark]: TraceAbstraction took 1450.40ms. Allocated memory is still 104.9MB. Free memory was 56.7MB in the beginning and 51.9MB in the end (delta: 4.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,800 INFO L158 Benchmark]: Witness Printer took 27.38ms. Allocated memory is still 104.9MB. Free memory was 51.9MB in the beginning and 49.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 19:25:46,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 79.7MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 119.70ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 68.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.62ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 66.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.86ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 65.7MB in the end (delta: 936.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.92ms. Allocated memory is still 104.9MB. Free memory was 65.7MB in the beginning and 57.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1450.40ms. Allocated memory is still 104.9MB. Free memory was 56.7MB in the beginning and 51.9MB in the end (delta: 4.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Witness Printer took 27.38ms. Allocated memory is still 104.9MB. Free memory was 51.9MB in the beginning and 49.3MB in the end (delta: 2.6MB). 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 24]: 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, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 38 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 27 HoareAnnotationTreeSize, 3 FomulaSimplifications, 163 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 328 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 4 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 66/84 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: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 && 0 <= i + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((n <= 2147483647 && 0 <= i + 2147483648) && i <= 2147483646) && 0 <= j - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: n <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-12-22 19:25:46,840 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