./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.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 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 15:28:47,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 15:28:47,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 15:28:47,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 15:28:47,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 15:28:47,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 15:28:47,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 15:28:47,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 15:28:47,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 15:28:47,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 15:28:47,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 15:28:47,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 15:28:47,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 15:28:47,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 15:28:47,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 15:28:47,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 15:28:47,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 15:28:47,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 15:28:47,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 15:28:47,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 15:28:47,753 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 15:28:47,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 15:28:47,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 15:28:47,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 15:28:47,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 15:28:47,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 15:28:47,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 15:28:47,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 15:28:47,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 15:28:47,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 15:28:47,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 15:28:47,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 15:28:47,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 15:28:47,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 15:28:47,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 15:28:47,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 15:28:47,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 15:28:47,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 15:28:47,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 15:28:47,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 15:28:47,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 15:28:47,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 15:28:47,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 15:28:47,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 15:28:47,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 15:28:47,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 15:28:47,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 15:28:47,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 15:28:47,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 15:28:47,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 15:28:47,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 15:28:47,791 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 15:28:47,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 15:28:47,792 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 15:28:47,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 15:28:47,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 15:28:47,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 15:28:47,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 15:28:47,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 15:28:47,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 15:28:47,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 15:28:47,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 15:28:47,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 15:28:47,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 15:28:47,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 15:28:47,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 15:28:47,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 15:28:47,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:28:47,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 15:28:47,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 15:28:47,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 15:28:47,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 15:28:47,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 15:28:47,795 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 15:28:47,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 15:28:47,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 15:28:47,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2022-07-13 15:28:47,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 15:28:48,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 15:28:48,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 15:28:48,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 15:28:48,022 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 15:28:48,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-07-13 15:28:48,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24997c63d/f5562fa32a704beab99ecffded08ec34/FLAGea2389cbd [2022-07-13 15:28:48,449 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 15:28:48,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-07-13 15:28:48,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24997c63d/f5562fa32a704beab99ecffded08ec34/FLAGea2389cbd [2022-07-13 15:28:48,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24997c63d/f5562fa32a704beab99ecffded08ec34 [2022-07-13 15:28:48,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 15:28:48,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 15:28:48,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 15:28:48,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 15:28:48,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 15:28:48,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed33405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48, skipping insertion in model container [2022-07-13 15:28:48,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 15:28:48,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 15:28:48,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-07-13 15:28:48,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:28:48,712 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 15:28:48,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-07-13 15:28:48,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:28:48,762 INFO L208 MainTranslator]: Completed translation [2022-07-13 15:28:48,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48 WrapperNode [2022-07-13 15:28:48,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 15:28:48,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 15:28:48,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 15:28:48,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 15:28:48,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,807 INFO L137 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2022-07-13 15:28:48,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 15:28:48,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 15:28:48,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 15:28:48,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 15:28:48,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 15:28:48,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 15:28:48,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 15:28:48,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 15:28:48,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (1/1) ... [2022-07-13 15:28:48,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:28:48,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:28:48,875 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) [2022-07-13 15:28:48,883 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 [2022-07-13 15:28:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 15:28:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 15:28:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 15:28:48,964 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 15:28:48,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 15:28:49,085 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 15:28:49,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 15:28:49,096 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 15:28:49,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:28:49 BoogieIcfgContainer [2022-07-13 15:28:49,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 15:28:49,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 15:28:49,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 15:28:49,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 15:28:49,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 03:28:48" (1/3) ... [2022-07-13 15:28:49,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc7f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:28:49, skipping insertion in model container [2022-07-13 15:28:49,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:28:48" (2/3) ... [2022-07-13 15:28:49,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc7f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:28:49, skipping insertion in model container [2022-07-13 15:28:49,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:28:49" (3/3) ... [2022-07-13 15:28:49,115 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-07-13 15:28:49,125 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 15:28:49,139 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 15:28:49,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 15:28:49,193 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@791fd5d9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63e00920 [2022-07-13 15:28:49,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 15:28:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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) [2022-07-13 15:28:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 15:28:49,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:28:49,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:28:49,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:28:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:28:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 297203850, now seen corresponding path program 1 times [2022-07-13 15:28:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:28:49,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557283185] [2022-07-13 15:28:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:28:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:28:49,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:28:49,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557283185] [2022-07-13 15:28:49,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557283185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:28:49,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:28:49,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 15:28:49,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783474910] [2022-07-13 15:28:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:28:49,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 15:28:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:28:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 15:28:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 15:28:49,387 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:28:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:28:49,431 INFO L93 Difference]: Finished difference Result 74 states and 110 transitions. [2022-07-13 15:28:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 15:28:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 15:28:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:28:49,437 INFO L225 Difference]: With dead ends: 74 [2022-07-13 15:28:49,438 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 15:28:49,440 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 [2022-07-13 15:28:49,442 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:28:49,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 96 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:28:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 15:28:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-07-13 15:28:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 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) [2022-07-13 15:28:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-13 15:28:49,464 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2022-07-13 15:28:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:28:49,465 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-13 15:28:49,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:28:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-13 15:28:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 15:28:49,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:28:49,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:28:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 15:28:49,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:28:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:28:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1628968459, now seen corresponding path program 1 times [2022-07-13 15:28:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:28:49,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58091655] [2022-07-13 15:28:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:28:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:28:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:28:49,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58091655] [2022-07-13 15:28:49,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58091655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:28:49,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902180541] [2022-07-13 15:28:49,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:49,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:28:49,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:28:49,524 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) [2022-07-13 15:28:49,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 15:28:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:49,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 15:28:49,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:28:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 15:28:49,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 15:28:49,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902180541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:28:49,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 15:28:49,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-13 15:28:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293340564] [2022-07-13 15:28:49,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:28:49,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 15:28:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:28:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 15:28:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 15:28:49,600 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-07-13 15:28:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:28:49,610 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2022-07-13 15:28:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 15:28:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2022-07-13 15:28:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:28:49,611 INFO L225 Difference]: With dead ends: 62 [2022-07-13 15:28:49,611 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 15:28:49,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 15:28:49,612 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:28:49,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:28:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 15:28:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-13 15:28:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 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) [2022-07-13 15:28:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2022-07-13 15:28:49,617 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 26 [2022-07-13 15:28:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:28:49,617 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2022-07-13 15:28:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-07-13 15:28:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2022-07-13 15:28:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 15:28:49,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:28:49,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:28:49,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 15:28:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:28:49,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:28:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:28:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1644930483, now seen corresponding path program 1 times [2022-07-13 15:28:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:28:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191879103] [2022-07-13 15:28:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:28:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:28:49,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:28:49,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191879103] [2022-07-13 15:28:49,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191879103] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:28:49,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566526949] [2022-07-13 15:28:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:49,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:28:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:28:49,870 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) [2022-07-13 15:28:49,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 15:28:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:49,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 15:28:49,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:28:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 15:28:50,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 15:28:50,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566526949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:28:50,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 15:28:50,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-13 15:28:50,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998369673] [2022-07-13 15:28:50,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:28:50,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 15:28:50,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:28:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 15:28:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 15:28:50,029 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-07-13 15:28:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:28:50,138 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2022-07-13 15:28:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 15:28:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-07-13 15:28:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:28:50,140 INFO L225 Difference]: With dead ends: 88 [2022-07-13 15:28:50,140 INFO L226 Difference]: Without dead ends: 60 [2022-07-13 15:28:50,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 15:28:50,141 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 30 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:28:50,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:28:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-13 15:28:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2022-07-13 15:28:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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) [2022-07-13 15:28:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-07-13 15:28:50,147 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 26 [2022-07-13 15:28:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:28:50,147 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-07-13 15:28:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-07-13 15:28:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-07-13 15:28:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 15:28:50,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:28:50,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:28:50,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 15:28:50,357 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,SelfDestructingSolverStorable2 [2022-07-13 15:28:50,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:28:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:28:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -817771149, now seen corresponding path program 1 times [2022-07-13 15:28:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:28:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131480807] [2022-07-13 15:28:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:28:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:28:50,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:28:50,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131480807] [2022-07-13 15:28:50,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131480807] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:28:50,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247058186] [2022-07-13 15:28:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:50,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:28:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:28:50,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 15:28:50,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 15:28:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 15:28:50,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:28:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:28:50,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:28:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:28:50,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247058186] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:28:50,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:28:50,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 15:28:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620162233] [2022-07-13 15:28:50,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:28:50,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 15:28:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:28:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 15:28:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 15:28:50,555 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2022-07-13 15:28:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:28:50,570 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2022-07-13 15:28:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 15:28:50,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 26 [2022-07-13 15:28:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:28:50,571 INFO L225 Difference]: With dead ends: 79 [2022-07-13 15:28:50,571 INFO L226 Difference]: Without dead ends: 45 [2022-07-13 15:28:50,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 15:28:50,572 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:28:50,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 119 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:28:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-07-13 15:28:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-07-13 15:28:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 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) [2022-07-13 15:28:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2022-07-13 15:28:50,576 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 26 [2022-07-13 15:28:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:28:50,577 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-07-13 15:28:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2022-07-13 15:28:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2022-07-13 15:28:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 15:28:50,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:28:50,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:28:50,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 15:28:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:28:50,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:28:50,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:28:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2006005895, now seen corresponding path program 2 times [2022-07-13 15:28:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:28:50,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395477278] [2022-07-13 15:28:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:28:50,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:28:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:28:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 15:28:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:28:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395477278] [2022-07-13 15:28:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395477278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:28:50,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:28:50,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 15:28:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048879442] [2022-07-13 15:28:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:28:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 15:28:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:28:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 15:28:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 15:28:50,875 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-07-13 15:28:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:28:50,913 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2022-07-13 15:28:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 15:28:50,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 32 [2022-07-13 15:28:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:28:50,914 INFO L225 Difference]: With dead ends: 72 [2022-07-13 15:28:50,914 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 15:28:50,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 15:28:50,915 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:28:50,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 121 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:28:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 15:28:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 15:28:50,916 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) [2022-07-13 15:28:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 15:28:50,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2022-07-13 15:28:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:28:50,916 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 15:28:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-07-13 15:28:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 15:28:50,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 15:28:50,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 15:28:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 15:28:50,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 15:28:50,947 INFO L902 garLoopResultBuilder]: At program point L85(lines 58 86) the Hoare annotation is: true [2022-07-13 15:28:50,948 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 15:28:50,948 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 15:28:50,948 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2022-07-13 15:28:50,948 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2022-07-13 15:28:50,948 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2022-07-13 15:28:50,948 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-07-13 15:28:50,949 INFO L902 garLoopResultBuilder]: At program point L95(lines 87 96) the Hoare annotation is: true [2022-07-13 15:28:50,949 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2022-07-13 15:28:50,949 INFO L902 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2022-07-13 15:28:50,949 INFO L899 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2022-07-13 15:28:50,949 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-07-13 15:28:50,950 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2022-07-13 15:28:50,950 INFO L899 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2022-07-13 15:28:50,950 INFO L899 garLoopResultBuilder]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2022-07-13 15:28:50,951 INFO L899 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2022-07-13 15:28:50,951 INFO L895 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (<= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1) |ULTIMATE.start_parse_expression_list_~j~0#1|))) [2022-07-13 15:28:50,951 INFO L899 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2022-07-13 15:28:50,952 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 81) no Hoare annotation was computed. [2022-07-13 15:28:50,952 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-07-13 15:28:50,952 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (<= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1) |ULTIMATE.start_parse_expression_list_~j~0#1|))) [2022-07-13 15:28:50,952 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2022-07-13 15:28:50,952 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2022-07-13 15:28:50,952 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 15:28:50,952 INFO L899 garLoopResultBuilder]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2022-07-13 15:28:50,953 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-13 15:28:50,953 INFO L902 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2022-07-13 15:28:50,953 INFO L899 garLoopResultBuilder]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2022-07-13 15:28:50,953 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-07-13 15:28:50,953 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2022-07-13 15:28:50,953 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 15:28:50,953 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (< |ULTIMATE.start_parse_expression_list_~j~0#1| (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1)) [2022-07-13 15:28:50,954 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2022-07-13 15:28:50,954 INFO L899 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2022-07-13 15:28:50,954 INFO L895 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (<= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1) |ULTIMATE.start_parse_expression_list_~j~0#1|))) [2022-07-13 15:28:50,954 INFO L899 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2022-07-13 15:28:50,954 INFO L899 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2022-07-13 15:28:50,954 INFO L899 garLoopResultBuilder]: For program point L68-2(line 68) no Hoare annotation was computed. [2022-07-13 15:28:50,960 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-07-13 15:28:50,961 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 15:28:50,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 03:28:50 BoogieIcfgContainer [2022-07-13 15:28:50,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 15:28:50,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 15:28:50,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 15:28:50,972 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 15:28:50,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:28:49" (3/4) ... [2022-07-13 15:28:50,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 15:28:50,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-13 15:28:50,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 15:28:50,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 15:28:50,982 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 15:28:51,009 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 15:28:51,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 15:28:51,010 INFO L158 Benchmark]: Toolchain (without parser) took 2543.68ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 64.1MB in the beginning and 79.4MB in the end (delta: -15.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,010 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 69.7MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:28:51,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.70ms. Allocated memory is still 98.6MB. Free memory was 63.8MB in the beginning and 72.4MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.78ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,011 INFO L158 Benchmark]: Boogie Preprocessor took 40.40ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 69.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,011 INFO L158 Benchmark]: RCFGBuilder took 249.13ms. Allocated memory is still 98.6MB. Free memory was 69.2MB in the beginning and 55.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,011 INFO L158 Benchmark]: TraceAbstraction took 1872.71ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 55.1MB in the beginning and 83.6MB in the end (delta: -28.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,012 INFO L158 Benchmark]: Witness Printer took 37.29ms. Allocated memory is still 130.0MB. Free memory was 83.1MB in the beginning and 79.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 15:28:51,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 69.7MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.70ms. Allocated memory is still 98.6MB. Free memory was 63.8MB in the beginning and 72.4MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.78ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.40ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 69.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.13ms. Allocated memory is still 98.6MB. Free memory was 69.2MB in the beginning and 55.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1872.71ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 55.1MB in the beginning and 83.6MB in the end (delta: -28.5MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 37.29ms. Allocated memory is still 130.0MB. Free memory was 83.1MB in the beginning and 79.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 301 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 227 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 23 NumberOfFragments, 42 HoareAnnotationTreeSize, 8 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 SizeOfPredicates, 2 NumberOfNonLiveVariables, 406 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 18/23 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: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: !(cond == 0) || !(start + 1 <= j) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: !(cond == 0) || !(start + 1 <= j) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: j < start + 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(cond == 0) && !(start + 1 <= j) - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 15:28:51,039 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