./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/loops/sum01-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a3f2d13c78d25176694a62cbb92a7cb676735e2350dda904e35c5c69ea362e5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:48:08,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:48:08,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:48:08,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:48:08,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:48:08,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:48:08,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:48:08,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:48:08,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:48:08,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:48:08,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:48:08,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:48:08,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:48:08,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:48:08,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:48:08,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:48:08,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:48:08,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:48:08,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:48:08,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:48:08,981 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:48:08,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:48:08,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:48:08,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:48:08,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:48:08,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:48:08,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:48:08,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:48:08,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:48:08,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:48:08,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:48:08,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:48:08,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:48:08,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:48:08,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:48:09,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:48:09,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:48:09,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:48:09,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:48:09,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:48:09,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:48:09,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:48:09,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:48:09,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:48:09,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:48:09,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:48:09,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:48:09,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:48:09,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:48:09,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:48:09,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:48:09,037 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:48:09,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:48:09,038 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:48:09,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:48:09,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:48:09,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:48:09,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:48:09,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:48:09,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:48:09,039 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:48:09,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:48:09,040 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:48:09,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:48:09,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:48:09,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:48:09,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:48:09,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:48:09,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:48:09,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:48:09,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:48:09,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:48:09,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:48:09,042 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:48:09,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:48:09,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:48:09,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a3f2d13c78d25176694a62cbb92a7cb676735e2350dda904e35c5c69ea362e5 [2022-07-12 03:48:09,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:48:09,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:48:09,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:48:09,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:48:09,305 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:48:09,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum01-2.i [2022-07-12 03:48:09,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e9cdd95/29173c9cbbbb40368b13f5d60f72b0ae/FLAG6c1a30d1d [2022-07-12 03:48:09,875 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:48:09,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum01-2.i [2022-07-12 03:48:09,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e9cdd95/29173c9cbbbb40368b13f5d60f72b0ae/FLAG6c1a30d1d [2022-07-12 03:48:10,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e9cdd95/29173c9cbbbb40368b13f5d60f72b0ae [2022-07-12 03:48:10,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:48:10,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:48:10,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:48:10,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:48:10,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:48:10,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121bbc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10, skipping insertion in model container [2022-07-12 03:48:10,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:48:10,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:48:10,537 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/loops/sum01-2.i[849,862] [2022-07-12 03:48:10,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:48:10,565 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:48:10,575 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/loops/sum01-2.i[849,862] [2022-07-12 03:48:10,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:48:10,590 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:48:10,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10 WrapperNode [2022-07-12 03:48:10,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:48:10,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:48:10,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:48:10,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:48:10,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,623 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-07-12 03:48:10,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:48:10,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:48:10,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:48:10,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:48:10,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:48:10,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:48:10,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:48:10,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:48:10,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (1/1) ... [2022-07-12 03:48:10,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:48:10,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:48:10,697 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) [2022-07-12 03:48:10,712 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 [2022-07-12 03:48:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:48:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:48:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:48:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:48:10,798 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:48:10,799 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:48:10,875 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:48:10,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:48:10,881 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 03:48:10,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:48:10 BoogieIcfgContainer [2022-07-12 03:48:10,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:48:10,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:48:10,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:48:10,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:48:10,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:48:10" (1/3) ... [2022-07-12 03:48:10,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7157bcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:48:10, skipping insertion in model container [2022-07-12 03:48:10,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:10" (2/3) ... [2022-07-12 03:48:10,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7157bcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:48:10, skipping insertion in model container [2022-07-12 03:48:10,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:48:10" (3/3) ... [2022-07-12 03:48:10,892 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2022-07-12 03:48:10,908 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:48:10,908 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:48:10,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:48:10,963 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79b7e8b4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d226773 [2022-07-12 03:48:10,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:48:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-07-12 03:48:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 03:48:10,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:48:10,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:48:10,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:48:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:48:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1807120264, now seen corresponding path program 1 times [2022-07-12 03:48:11,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:48:11,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347949278] [2022-07-12 03:48:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:48:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:48:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:48:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347949278] [2022-07-12 03:48:11,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347949278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:48:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:48:11,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:48:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804607678] [2022-07-12 03:48:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:48:11,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:48:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:48:11,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:48:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:48:11,181 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-12 03:48:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:48:11,194 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-07-12 03:48:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:48:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-07-12 03:48:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:48:11,205 INFO L225 Difference]: With dead ends: 21 [2022-07-12 03:48:11,206 INFO L226 Difference]: Without dead ends: 9 [2022-07-12 03:48:11,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:48:11,212 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:48:11,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:48:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-12 03:48:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-12 03:48:11,239 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) [2022-07-12 03:48:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-12 03:48:11,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-07-12 03:48:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:48:11,240 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-12 03:48:11,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-12 03:48:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-12 03:48:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 03:48:11,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:48:11,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:48:11,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:48:11,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:48:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:48:11,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1806941518, now seen corresponding path program 1 times [2022-07-12 03:48:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:48:11,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714425823] [2022-07-12 03:48:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:11,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:48:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:48:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:11,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:48:11,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714425823] [2022-07-12 03:48:11,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714425823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:48:11,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:48:11,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:48:11,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577673120] [2022-07-12 03:48:11,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:48:11,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:48:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:48:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:48:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:48:11,377 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-12 03:48:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:48:11,427 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-07-12 03:48:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:48:11,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-12 03:48:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:48:11,450 INFO L225 Difference]: With dead ends: 14 [2022-07-12 03:48:11,450 INFO L226 Difference]: Without dead ends: 10 [2022-07-12 03:48:11,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:48:11,452 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:48:11,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:48:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-12 03:48:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-12 03:48:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) 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) [2022-07-12 03:48:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-12 03:48:11,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2022-07-12 03:48:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:48:11,456 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-12 03:48:11,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-12 03:48:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-12 03:48:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 03:48:11,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:48:11,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:48:11,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:48:11,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:48:11,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:48:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1357243696, now seen corresponding path program 1 times [2022-07-12 03:48:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:48:11,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199988786] [2022-07-12 03:48:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:48:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:48:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:11,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:48:11,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199988786] [2022-07-12 03:48:11,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199988786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:48:11,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374692812] [2022-07-12 03:48:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:11,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:48:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:48:11,687 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) [2022-07-12 03:48:11,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:48:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:48:11,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 03:48:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:48:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:11,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:48:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:12,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374692812] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:48:12,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:48:12,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-07-12 03:48:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836218934] [2022-07-12 03:48:12,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:48:12,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 03:48:12,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:48:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 03:48:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-07-12 03:48:12,166 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:48:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:48:12,375 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-07-12 03:48:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 03:48:12,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-12 03:48:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:48:12,377 INFO L225 Difference]: With dead ends: 20 [2022-07-12 03:48:12,377 INFO L226 Difference]: Without dead ends: 14 [2022-07-12 03:48:12,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-07-12 03:48:12,380 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:48:12,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:48:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-12 03:48:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-12 03:48:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2022-07-12 03:48:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-12 03:48:12,391 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2022-07-12 03:48:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:48:12,391 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-12 03:48:12,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:48:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-12 03:48:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:48:12,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:48:12,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:48:12,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:48:12,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:48:12,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:48:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:48:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -530250892, now seen corresponding path program 2 times [2022-07-12 03:48:12,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:48:12,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734313708] [2022-07-12 03:48:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:48:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:48:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 03:48:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:48:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734313708] [2022-07-12 03:48:12,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734313708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:48:12,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246852715] [2022-07-12 03:48:12,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:48:12,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:48:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:48:12,770 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) [2022-07-12 03:48:12,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 03:48:12,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:48:12,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:48:12,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 03:48:12,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:48:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:13,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:48:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:13,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246852715] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:48:13,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:48:13,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 27 [2022-07-12 03:48:13,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680624099] [2022-07-12 03:48:13,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:48:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 03:48:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:48:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 03:48:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-07-12 03:48:13,315 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2022-07-12 03:48:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:48:13,673 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-07-12 03:48:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 03:48:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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 13 [2022-07-12 03:48:13,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:48:13,674 INFO L225 Difference]: With dead ends: 18 [2022-07-12 03:48:13,674 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 03:48:13,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2022-07-12 03:48:13,675 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:48:13,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 17 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:48:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 03:48:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 03:48:13,676 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) [2022-07-12 03:48:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 03:48:13,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-07-12 03:48:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:48:13,677 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 03:48:13,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2022-07-12 03:48:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 03:48:13,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 03:48:13,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:48:13,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:48:13,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 03:48:13,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 03:48:13,933 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 03:48:13,934 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2022-07-12 03:48:13,935 INFO L895 garLoopResultBuilder]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start_main_~sn~0#1| 0)) (let ((.cse1 (* 2 |ULTIMATE.start_main_~i~0#1|)) (.cse0 (+ 2 |ULTIMATE.start_main_~sn~0#1|))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< |ULTIMATE.start_main_~sn~0#1| (+ (* 2 |ULTIMATE.start_main_~n~0#1|) 1))))) [2022-07-12 03:48:13,935 INFO L899 garLoopResultBuilder]: For program point L25-4(lines 25 27) no Hoare annotation was computed. [2022-07-12 03:48:13,935 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-07-12 03:48:13,935 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 03:48:13,936 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 03:48:13,936 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 03:48:13,937 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-07-12 03:48:13,939 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-12 03:48:13,943 INFO L902 garLoopResultBuilder]: At program point L22(lines 22 29) the Hoare annotation is: true [2022-07-12 03:48:13,943 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-07-12 03:48:13,943 INFO L902 garLoopResultBuilder]: At program point L16-2(lines 15 20) the Hoare annotation is: true [2022-07-12 03:48:13,947 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-12 03:48:13,950 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:48:13,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:48:13 BoogieIcfgContainer [2022-07-12 03:48:13,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:48:13,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:48:13,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:48:13,972 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:48:13,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:48:10" (3/4) ... [2022-07-12 03:48:13,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 03:48:13,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-12 03:48:13,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 03:48:13,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 03:48:13,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 03:48:14,016 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 03:48:14,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:48:14,017 INFO L158 Benchmark]: Toolchain (without parser) took 3649.85ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 65.7MB in the beginning and 58.8MB in the end (delta: 6.8MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-07-12 03:48:14,018 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:48:14,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.79ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 63.3MB in the end (delta: 2.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:48:14,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.93ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 61.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:48:14,019 INFO L158 Benchmark]: Boogie Preprocessor took 32.92ms. Allocated memory is still 88.1MB. Free memory was 61.9MB in the beginning and 61.0MB in the end (delta: 933.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:48:14,020 INFO L158 Benchmark]: RCFGBuilder took 224.57ms. Allocated memory is still 88.1MB. Free memory was 61.0MB in the beginning and 52.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 03:48:14,020 INFO L158 Benchmark]: TraceAbstraction took 3078.98ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 61.0MB in the end (delta: -9.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-07-12 03:48:14,020 INFO L158 Benchmark]: Witness Printer took 51.18ms. Allocated memory is still 107.0MB. Free memory was 61.0MB in the beginning and 58.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:48:14,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.79ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 63.3MB in the end (delta: 2.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.93ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 61.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.92ms. Allocated memory is still 88.1MB. Free memory was 61.9MB in the beginning and 61.0MB in the end (delta: 933.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.57ms. Allocated memory is still 88.1MB. Free memory was 61.0MB in the beginning and 52.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3078.98ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 61.0MB in the end (delta: -9.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 51.18ms. Allocated memory is still 107.0MB. Free memory was 61.0MB in the beginning and 58.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 27 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 10 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/30 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 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (i == 1 && sn == 0) || ((2 + sn <= 2 * i && 2 * i <= 2 + sn) && sn < 2 * n + 1) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 03:48:14,071 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