./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/loop-zilu/benchmark43_conjunctive.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 56797e61f5ee281c00742e683df6d32e4d423773c50b7f1c748881e4f8402597 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 00:10:50,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 00:10:50,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 00:10:50,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 00:10:50,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 00:10:50,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 00:10:50,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 00:10:50,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 00:10:50,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 00:10:50,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 00:10:50,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 00:10:50,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 00:10:50,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 00:10:50,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 00:10:50,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 00:10:50,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 00:10:50,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 00:10:50,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 00:10:50,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 00:10:50,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 00:10:50,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 00:10:50,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 00:10:50,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 00:10:50,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 00:10:50,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 00:10:50,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 00:10:50,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 00:10:50,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 00:10:50,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 00:10:50,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 00:10:50,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 00:10:50,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 00:10:50,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 00:10:50,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 00:10:50,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 00:10:50,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 00:10:50,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 00:10:50,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 00:10:50,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 00:10:50,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 00:10:50,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 00:10:50,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 00:10:51,029 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 00:10:51,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 00:10:51,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 00:10:51,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 00:10:51,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 00:10:51,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 00:10:51,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 00:10:51,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 00:10:51,032 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 00:10:51,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 00:10:51,032 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 00:10:51,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 00:10:51,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 00:10:51,033 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 00:10:51,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 00:10:51,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 00:10:51,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 00:10:51,035 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56797e61f5ee281c00742e683df6d32e4d423773c50b7f1c748881e4f8402597 [2023-02-14 00:10:51,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 00:10:51,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 00:10:51,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 00:10:51,331 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 00:10:51,331 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 00:10:51,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i [2023-02-14 00:10:52,421 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 00:10:52,598 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 00:10:52,599 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i [2023-02-14 00:10:52,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cefeebe82/757d134aff93482b9361c35421de428d/FLAG57ddf51bf [2023-02-14 00:10:52,616 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cefeebe82/757d134aff93482b9361c35421de428d [2023-02-14 00:10:52,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 00:10:52,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 00:10:52,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 00:10:52,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 00:10:52,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 00:10:52,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70148b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52, skipping insertion in model container [2023-02-14 00:10:52,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 00:10:52,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 00:10:52,750 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i[873,886] [2023-02-14 00:10:52,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 00:10:52,764 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 00:10:52,773 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive.i[873,886] [2023-02-14 00:10:52,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 00:10:52,785 INFO L208 MainTranslator]: Completed translation [2023-02-14 00:10:52,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52 WrapperNode [2023-02-14 00:10:52,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 00:10:52,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 00:10:52,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 00:10:52,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 00:10:52,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,810 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-02-14 00:10:52,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 00:10:52,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 00:10:52,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 00:10:52,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 00:10:52,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 00:10:52,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 00:10:52,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 00:10:52,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 00:10:52,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (1/1) ... [2023-02-14 00:10:52,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 00:10:52,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:10:52,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 00:10:52,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 00:10:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 00:10:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 00:10:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 00:10:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 00:10:52,931 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 00:10:52,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 00:10:53,010 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 00:10:53,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 00:10:53,018 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 00:10:53,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:10:53 BoogieIcfgContainer [2023-02-14 00:10:53,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 00:10:53,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 00:10:53,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 00:10:53,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 00:10:53,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 12:10:52" (1/3) ... [2023-02-14 00:10:53,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7897ac6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:10:53, skipping insertion in model container [2023-02-14 00:10:53,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:10:52" (2/3) ... [2023-02-14 00:10:53,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7897ac6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:10:53, skipping insertion in model container [2023-02-14 00:10:53,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:10:53" (3/3) ... [2023-02-14 00:10:53,028 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark43_conjunctive.i [2023-02-14 00:10:53,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 00:10:53,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 00:10:53,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 00:10:53,115 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14560cec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 00:10:53,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 00:10:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) [2023-02-14 00:10:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 00:10:53,133 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:10:53,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:10:53,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:10:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:10:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2023-02-14 00:10:53,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:10:53,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971853196] [2023-02-14 00:10:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:10:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:10:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:10:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:10:53,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:10:53,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971853196] [2023-02-14 00:10:53,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971853196] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:10:53,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:10:53,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 00:10:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640883134] [2023-02-14 00:10:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:10:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 00:10:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:10:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 00:10:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 00:10:53,338 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) 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) [2023-02-14 00:10:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:10:53,349 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-02-14 00:10:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 00:10:53,351 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 [2023-02-14 00:10:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:10:53,357 INFO L225 Difference]: With dead ends: 20 [2023-02-14 00:10:53,357 INFO L226 Difference]: Without dead ends: 8 [2023-02-14 00:10:53,359 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 [2023-02-14 00:10:53,362 INFO L413 NwaCegarLoop]: 13 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, 13 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 [2023-02-14 00:10:53,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:10:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-14 00:10:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-14 00:10:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2023-02-14 00:10:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-14 00:10:53,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2023-02-14 00:10:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:10:53,389 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-14 00:10:53,389 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) [2023-02-14 00:10:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-14 00:10:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 00:10:53,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:10:53,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:10:53,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 00:10:53,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:10:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:10:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2023-02-14 00:10:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:10:53,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618453122] [2023-02-14 00:10:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:10:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:10:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:10:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:10:53,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:10:53,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618453122] [2023-02-14 00:10:53,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618453122] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:10:53,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:10:53,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 00:10:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425812190] [2023-02-14 00:10:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:10:53,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 00:10:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:10:53,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 00:10:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 00:10:53,470 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 00:10:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:10:53,480 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-02-14 00:10:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 00:10:53,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2023-02-14 00:10:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:10:53,481 INFO L225 Difference]: With dead ends: 13 [2023-02-14 00:10:53,482 INFO L226 Difference]: Without dead ends: 9 [2023-02-14 00:10:53,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 00:10:53,483 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:10:53,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:10:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-14 00:10:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-14 00:10:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:10:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-02-14 00:10:53,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2023-02-14 00:10:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:10:53,488 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-02-14 00:10:53,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 00:10:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-02-14 00:10:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 00:10:53,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:10:53,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:10:53,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 00:10:53,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:10:53,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:10:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2023-02-14 00:10:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:10:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354502325] [2023-02-14 00:10:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:10:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:10:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:10:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:10:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:10:53,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354502325] [2023-02-14 00:10:53,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354502325] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 00:10:53,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224892227] [2023-02-14 00:10:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:10:53,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:10:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:10:53,813 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) [2023-02-14 00:10:53,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 00:10:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:10:53,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 00:10:53,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:10:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:10:54,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:10:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:10:54,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224892227] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 00:10:54,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 00:10:54,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-02-14 00:10:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886358728] [2023-02-14 00:10:54,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 00:10:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 00:10:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:10:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 00:10:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-14 00:10:54,223 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2023-02-14 00:10:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:10:54,267 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2023-02-14 00:10:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 00:10:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) Word has length 8 [2023-02-14 00:10:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:10:54,268 INFO L225 Difference]: With dead ends: 9 [2023-02-14 00:10:54,268 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 00:10:54,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-02-14 00:10:54,270 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:10:54,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:10:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 00:10:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 00:10:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:10:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 00:10:54,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2023-02-14 00:10:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:10:54,275 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 00:10:54,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 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) [2023-02-14 00:10:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 00:10:54,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 00:10:54,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 00:10:54,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 00:10:54,483 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 [2023-02-14 00:10:54,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 00:10:54,499 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 00:10:54,499 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 100) (<= |ULTIMATE.start_main_~y~0#1| 100)) [2023-02-14 00:10:54,499 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2023-02-14 00:10:54,500 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-02-14 00:10:54,500 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 00:10:54,500 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 29) the Hoare annotation is: true [2023-02-14 00:10:54,500 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 00:10:54,500 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 00:10:54,500 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-02-14 00:10:54,501 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-02-14 00:10:54,501 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-02-14 00:10:54,501 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2023-02-14 00:10:54,504 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-14 00:10:54,505 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 00:10:54,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 12:10:54 BoogieIcfgContainer [2023-02-14 00:10:54,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 00:10:54,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 00:10:54,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 00:10:54,520 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 00:10:54,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:10:53" (3/4) ... [2023-02-14 00:10:54,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 00:10:54,532 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-14 00:10:54,532 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-14 00:10:54,533 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 00:10:54,533 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 00:10:54,563 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 00:10:54,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 00:10:54,564 INFO L158 Benchmark]: Toolchain (without parser) took 1943.97ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 74.2MB in the beginning and 104.5MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 00:10:54,565 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 119.5MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 00:10:54,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.38ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 64.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 00:10:54,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.91ms. Allocated memory is still 119.5MB. Free memory was 64.3MB in the beginning and 63.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:10:54,567 INFO L158 Benchmark]: Boogie Preprocessor took 13.78ms. Allocated memory is still 119.5MB. Free memory was 63.0MB in the beginning and 61.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:10:54,568 INFO L158 Benchmark]: RCFGBuilder took 195.55ms. Allocated memory is still 119.5MB. Free memory was 61.7MB in the beginning and 52.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 00:10:54,568 INFO L158 Benchmark]: TraceAbstraction took 1496.12ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 51.8MB in the beginning and 106.6MB in the end (delta: -54.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 00:10:54,569 INFO L158 Benchmark]: Witness Printer took 43.61ms. Allocated memory is still 144.7MB. Free memory was 106.6MB in the beginning and 104.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:10:54,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 119.5MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.38ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 64.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.91ms. Allocated memory is still 119.5MB. Free memory was 64.3MB in the beginning and 63.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.78ms. Allocated memory is still 119.5MB. Free memory was 63.0MB in the beginning and 61.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 195.55ms. Allocated memory is still 119.5MB. Free memory was 61.7MB in the beginning and 52.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1496.12ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 51.8MB in the beginning and 106.6MB in the end (delta: -54.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.61ms. Allocated memory is still 144.7MB. Free memory was 106.6MB in the beginning and 104.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 23 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 5 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x <= 100 && y <= 100 RESULT: Ultimate proved your program to be correct! [2023-02-14 00:10:54,586 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