./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark05_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 ecbe73983438c23c42e2ed0d81896f3aad03ba3c52d7d8ba5ad74018d0035eda --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:58:45,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:58:45,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:58:45,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:58:45,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:58:45,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:58:45,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:58:45,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:58:45,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:58:45,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:58:45,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:58:45,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:58:45,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:58:45,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:58:45,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:58:45,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:58:45,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:58:45,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:58:45,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:58:45,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:58:45,811 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:58:45,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:58:45,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:58:45,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:58:45,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:58:45,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:58:45,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:58:45,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:58:45,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:58:45,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:58:45,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:58:45,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:58:45,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:58:45,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:58:45,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:58:45,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:58:45,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:58:45,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:58:45,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:58:45,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:58:45,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:58:45,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:58:45,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:58:45,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:58:45,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:58:45,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:58:45,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:58:45,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:58:45,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:58:45,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:58:45,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:58:45,863 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:58:45,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:58:45,864 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:58:45,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:58:45,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:58:45,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:58:45,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:58:45,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:58:45,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:58:45,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:58:45,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:58:45,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:58:45,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:58:45,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:58:45,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:58:45,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:58:45,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:58:45,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:58:45,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:58:45,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:58:45,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:58:45,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:58:45,868 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:58:45,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:58:45,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:58:45,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecbe73983438c23c42e2ed0d81896f3aad03ba3c52d7d8ba5ad74018d0035eda [2022-07-21 02:58:46,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:58:46,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:58:46,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:58:46,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:58:46,197 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:58:46,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2022-07-21 02:58:46,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d009d804f/9458dd5bd79445b1bcc52c4c5a7ef1a3/FLAGb4fc92c33 [2022-07-21 02:58:46,716 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:58:46,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2022-07-21 02:58:46,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d009d804f/9458dd5bd79445b1bcc52c4c5a7ef1a3/FLAGb4fc92c33 [2022-07-21 02:58:46,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d009d804f/9458dd5bd79445b1bcc52c4c5a7ef1a3 [2022-07-21 02:58:46,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:58:46,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:58:46,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:58:46,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:58:46,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:58:46,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:46,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37df516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46, skipping insertion in model container [2022-07-21 02:58:46,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:46,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:58:46,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:58:46,914 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/loop-zilu/benchmark05_conjunctive.i[873,886] [2022-07-21 02:58:46,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:58:46,928 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:58:46,950 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/loop-zilu/benchmark05_conjunctive.i[873,886] [2022-07-21 02:58:46,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:58:46,971 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:58:46,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46 WrapperNode [2022-07-21 02:58:46,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:58:46,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:58:46,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:58:46,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:58:46,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:46,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:46,999 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-07-21 02:58:47,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:58:47,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:58:47,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:58:47,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:58:47,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:58:47,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:58:47,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:58:47,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:58:47,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (1/1) ... [2022-07-21 02:58:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:58:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:58:47,060 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) [2022-07-21 02:58:47,083 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 [2022-07-21 02:58:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:58:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:58:47,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:58:47,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:58:47,157 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:58:47,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:58:47,277 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:58:47,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:58:47,282 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:58:47,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:58:47 BoogieIcfgContainer [2022-07-21 02:58:47,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:58:47,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:58:47,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:58:47,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:58:47,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:58:46" (1/3) ... [2022-07-21 02:58:47,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d6e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:58:47, skipping insertion in model container [2022-07-21 02:58:47,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:58:46" (2/3) ... [2022-07-21 02:58:47,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d6e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:58:47, skipping insertion in model container [2022-07-21 02:58:47,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:58:47" (3/3) ... [2022-07-21 02:58:47,291 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2022-07-21 02:58:47,303 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:58:47,303 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:58:47,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:58:47,355 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@1c582d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f2bbd13 [2022-07-21 02:58:47,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:58:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-07-21 02:58:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:58:47,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:58:47,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:58:47,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:58:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:58:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1807274183, now seen corresponding path program 1 times [2022-07-21 02:58:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:58:47,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209817747] [2022-07-21 02:58:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:58:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:47,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:58:47,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209817747] [2022-07-21 02:58:47,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209817747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:58:47,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:58:47,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:58:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895065883] [2022-07-21 02:58:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:58:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:58:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:58:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:58:47,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:58:47,543 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-07-21 02:58:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:58:47,556 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-07-21 02:58:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:58:47,558 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 [2022-07-21 02:58:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:58:47,564 INFO L225 Difference]: With dead ends: 21 [2022-07-21 02:58:47,564 INFO L226 Difference]: Without dead ends: 9 [2022-07-21 02:58:47,566 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 [2022-07-21 02:58:47,570 INFO L413 NwaCegarLoop]: 15 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, 15 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 [2022-07-21 02:58:47,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:58:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-21 02:58:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-21 02:58:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2022-07-21 02:58:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-07-21 02:58:47,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-07-21 02:58:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:58:47,600 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-07-21 02:58:47,600 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) [2022-07-21 02:58:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-07-21 02:58:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:58:47,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:58:47,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:58:47,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:58:47,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:58:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:58:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1806976273, now seen corresponding path program 1 times [2022-07-21 02:58:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:58:47,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601608958] [2022-07-21 02:58:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:47,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:58:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:47,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:58:47,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601608958] [2022-07-21 02:58:47,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601608958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:58:47,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:58:47,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:58:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361012348] [2022-07-21 02:58:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:58:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:58:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:58:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:58:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:58:47,712 INFO L87 Difference]: Start difference. First operand 9 states and 10 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) [2022-07-21 02:58:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:58:47,739 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-07-21 02:58:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:58:47,739 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 [2022-07-21 02:58:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:58:47,740 INFO L225 Difference]: With dead ends: 14 [2022-07-21 02:58:47,740 INFO L226 Difference]: Without dead ends: 10 [2022-07-21 02:58:47,741 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 [2022-07-21 02:58:47,742 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:58:47,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:58:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-21 02:58:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-21 02:58:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:58:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-07-21 02:58:47,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2022-07-21 02:58:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:58:47,754 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-07-21 02:58:47,754 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) [2022-07-21 02:58:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-07-21 02:58:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 02:58:47,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:58:47,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:58:47,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:58:47,756 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:58:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:58:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1387754644, now seen corresponding path program 1 times [2022-07-21 02:58:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:58:47,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332973534] [2022-07-21 02:58:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:58:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:58:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332973534] [2022-07-21 02:58:47,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332973534] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:58:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912563174] [2022-07-21 02:58:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:47,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:58:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:58:47,880 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) [2022-07-21 02:58:47,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:58:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:47,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 02:58:47,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:58:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:48,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:58:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:48,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912563174] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:58:48,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:58:48,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-07-21 02:58:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835349914] [2022-07-21 02:58:48,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:58:48,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 02:58:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:58:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 02:58:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-21 02:58:48,290 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-07-21 02:58:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:58:48,416 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-07-21 02:58:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 02:58:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 [2022-07-21 02:58:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:58:48,418 INFO L225 Difference]: With dead ends: 19 [2022-07-21 02:58:48,418 INFO L226 Difference]: Without dead ends: 13 [2022-07-21 02:58:48,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-21 02:58:48,425 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:58:48,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:58:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-21 02:58:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-07-21 02:58:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:58:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-07-21 02:58:48,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-07-21 02:58:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:58:48,438 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-21 02:58:48,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-07-21 02:58:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-07-21 02:58:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 02:58:48,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:58:48,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:58:48,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:58:48,663 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 [2022-07-21 02:58:48,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:58:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:58:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2052272297, now seen corresponding path program 2 times [2022-07-21 02:58:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:58:48,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239786602] [2022-07-21 02:58:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:58:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:58:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:58:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:48,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:58:48,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239786602] [2022-07-21 02:58:48,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239786602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:58:48,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267071321] [2022-07-21 02:58:48,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:58:48,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:58:48,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:58:48,815 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) [2022-07-21 02:58:48,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:58:48,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 02:58:48,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:58:48,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 02:58:48,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:58:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:48,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:58:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:58:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267071321] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:58:49,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:58:49,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-07-21 02:58:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52644029] [2022-07-21 02:58:49,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:58:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 02:58:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:58:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 02:58:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:58:49,100 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-07-21 02:58:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:58:49,200 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2022-07-21 02:58:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 02:58:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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 11 [2022-07-21 02:58:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:58:49,202 INFO L225 Difference]: With dead ends: 15 [2022-07-21 02:58:49,202 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 02:58:49,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-07-21 02:58:49,206 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:58:49,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:58:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 02:58:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 02:58:49,210 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) [2022-07-21 02:58:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 02:58:49,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-07-21 02:58:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:58:49,210 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 02:58:49,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-07-21 02:58:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 02:58:49,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 02:58:49,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:58:49,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 02:58:49,427 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 [2022-07-21 02:58:49,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 02:58:49,463 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 02:58:49,463 INFO L902 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2022-07-21 02:58:49,464 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-07-21 02:58:49,464 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-07-21 02:58:49,464 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 02:58:49,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 02:58:49,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 02:58:49,464 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-21 02:58:49,466 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (or (and (<= (+ |ULTIMATE.start_main_~y~0#1| 1) |ULTIMATE.start_main_~n~0#1|) .cse0) (and .cse0 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-07-21 02:58:49,466 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-21 02:58:49,471 INFO L899 garLoopResultBuilder]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2022-07-21 02:58:49,471 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-07-21 02:58:49,472 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-07-21 02:58:49,476 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-21 02:58:49,477 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:58:49,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:58:49 BoogieIcfgContainer [2022-07-21 02:58:49,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:58:49,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:58:49,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:58:49,488 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:58:49,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:58:47" (3/4) ... [2022-07-21 02:58:49,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 02:58:49,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-21 02:58:49,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 02:58:49,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 02:58:49,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 02:58:49,528 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:58:49,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:58:49,529 INFO L158 Benchmark]: Toolchain (without parser) took 2774.27ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 45.6MB in the beginning and 29.1MB in the end (delta: 16.6MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2022-07-21 02:58:49,530 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 46.1MB. Free memory was 28.3MB in the beginning and 28.3MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:58:49,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.14ms. Allocated memory is still 60.8MB. Free memory was 45.3MB in the beginning and 43.9MB in the end (delta: 1.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 02:58:49,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.12ms. Allocated memory is still 60.8MB. Free memory was 43.9MB in the beginning and 42.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:58:49,530 INFO L158 Benchmark]: Boogie Preprocessor took 27.12ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 41.5MB in the end (delta: 971.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:58:49,531 INFO L158 Benchmark]: RCFGBuilder took 254.78ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 32.5MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 02:58:49,531 INFO L158 Benchmark]: TraceAbstraction took 2201.20ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 31.9MB in the beginning and 31.2MB in the end (delta: 707.7kB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-07-21 02:58:49,531 INFO L158 Benchmark]: Witness Printer took 41.22ms. Allocated memory is still 73.4MB. Free memory was 31.2MB in the beginning and 29.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:58:49,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 46.1MB. Free memory was 28.3MB in the beginning and 28.3MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.14ms. Allocated memory is still 60.8MB. Free memory was 45.3MB in the beginning and 43.9MB in the end (delta: 1.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.12ms. Allocated memory is still 60.8MB. Free memory was 43.9MB in the beginning and 42.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.12ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 41.5MB in the end (delta: 971.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.78ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 32.5MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2201.20ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 31.9MB in the beginning and 31.2MB in the end (delta: 707.7kB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Witness Printer took 41.22ms. Allocated memory is still 73.4MB. Free memory was 31.2MB in the beginning and 29.1MB 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: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 32 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 322 SizeOfPredicates, 12 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/15 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: 24]: Loop Invariant Derived loop invariant: (y + 1 <= n && x <= y) || ((x <= y && y <= n) && y <= x) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 02:58:49,567 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