./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array30_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/array-patterns/array30_pattern.c -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 bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:13:46,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:13:46,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:13:46,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:13:46,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:13:46,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:13:46,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:13:46,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:13:46,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:13:46,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:13:46,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:13:46,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:13:46,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:13:46,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:13:46,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:13:46,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:13:46,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:13:46,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:13:46,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:13:46,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:13:46,780 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:13:46,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:13:46,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:13:46,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:13:46,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:13:46,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:13:46,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:13:46,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:13:46,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:13:46,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:13:46,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:13:46,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:13:46,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:13:46,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:13:46,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:13:46,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:13:46,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:13:46,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:13:46,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:13:46,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:13:46,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:13:46,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:13:46,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:13:46,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:13:46,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:13:46,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:13:46,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:13:46,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:13:46,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:13:46,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:13:46,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:13:46,841 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:13:46,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:13:46,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:13:46,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:13:46,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:13:46,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:13:46,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:13:46,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:13:46,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:13:46,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:13:46,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:13:46,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:13:46,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:13:46,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:13:46,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:13:46,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:13:46,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:13:46,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:13:46,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:13:46,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:13:46,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:13:46,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:13:46,846 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:13:46,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:13:46,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:13:46,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c [2022-07-19 10:13:47,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:13:47,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:13:47,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:13:47,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:13:47,127 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:13:47,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array30_pattern.c [2022-07-19 10:13:47,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31702725f/9f642026b6bc402cbd1615eb59570cf6/FLAG9323d89f6 [2022-07-19 10:13:47,649 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:13:47,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c [2022-07-19 10:13:47,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31702725f/9f642026b6bc402cbd1615eb59570cf6/FLAG9323d89f6 [2022-07-19 10:13:47,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31702725f/9f642026b6bc402cbd1615eb59570cf6 [2022-07-19 10:13:47,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:13:47,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:13:47,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:13:47,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:13:47,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:13:47,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2493c69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47, skipping insertion in model container [2022-07-19 10:13:47,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:13:47,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:13:47,838 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/array-patterns/array30_pattern.c[1189,1202] [2022-07-19 10:13:47,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:13:47,868 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:13:47,882 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/array-patterns/array30_pattern.c[1189,1202] [2022-07-19 10:13:47,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:13:47,915 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:13:47,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47 WrapperNode [2022-07-19 10:13:47,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:13:47,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:13:47,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:13:47,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:13:47,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,951 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2022-07-19 10:13:47,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:13:47,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:13:47,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:13:47,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:13:47,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:47,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:13:47,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:13:47,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:13:47,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:13:48,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (1/1) ... [2022-07-19 10:13:48,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:13:48,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:13:48,041 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) [2022-07-19 10:13:48,056 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 [2022-07-19 10:13:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:13:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:13:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:13:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:13:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:13:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:13:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:13:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:13:48,160 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:13:48,161 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:13:48,352 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:13:48,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:13:48,358 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 10:13:48,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:13:48 BoogieIcfgContainer [2022-07-19 10:13:48,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:13:48,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:13:48,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:13:48,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:13:48,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:13:47" (1/3) ... [2022-07-19 10:13:48,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d82ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:13:48, skipping insertion in model container [2022-07-19 10:13:48,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:47" (2/3) ... [2022-07-19 10:13:48,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d82ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:13:48, skipping insertion in model container [2022-07-19 10:13:48,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:13:48" (3/3) ... [2022-07-19 10:13:48,367 INFO L111 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2022-07-19 10:13:48,380 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:13:48,380 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:13:48,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:13:48,454 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@608595cd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2defae95 [2022-07-19 10:13:48,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:13:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) [2022-07-19 10:13:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 10:13:48,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:13:48,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:13:48,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:13:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:13:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -409725857, now seen corresponding path program 1 times [2022-07-19 10:13:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:13:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755046816] [2022-07-19 10:13:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:13:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:13:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:13:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:13:48,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755046816] [2022-07-19 10:13:48,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755046816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:13:48,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:13:48,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:13:48,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836512360] [2022-07-19 10:13:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:13:48,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:13:48,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:13:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:13:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:13:48,684 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-07-19 10:13:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:13:48,701 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2022-07-19 10:13:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:13:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2022-07-19 10:13:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:13:48,710 INFO L225 Difference]: With dead ends: 43 [2022-07-19 10:13:48,711 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 10:13:48,714 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 [2022-07-19 10:13:48,724 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2022-07-19 10:13:48,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:13:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 10:13:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 10:13:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-07-19 10:13:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-07-19 10:13:48,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2022-07-19 10:13:48,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:13:48,761 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-19 10:13:48,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-07-19 10:13:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-07-19 10:13:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 10:13:48,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:13:48,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:13:48,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:13:48,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:13:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:13:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1934801258, now seen corresponding path program 1 times [2022-07-19 10:13:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:13:48,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805458089] [2022-07-19 10:13:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:48,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:13:48,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:13:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000421853] [2022-07-19 10:13:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:48,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:13:48,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:13:48,811 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) [2022-07-19 10:13:48,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 10:13:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:13:48,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 10:13:48,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:13:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:13:49,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:13:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:13:49,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805458089] [2022-07-19 10:13:49,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:13:49,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000421853] [2022-07-19 10:13:49,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000421853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:13:49,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:13:49,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 10:13:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187062130] [2022-07-19 10:13:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:13:49,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 10:13:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:13:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 10:13:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:13:49,030 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-19 10:13:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:13:49,159 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-07-19 10:13:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 10:13:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) Word has length 10 [2022-07-19 10:13:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:13:49,161 INFO L225 Difference]: With dead ends: 38 [2022-07-19 10:13:49,161 INFO L226 Difference]: Without dead ends: 29 [2022-07-19 10:13:49,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 10:13:49,163 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:13:49,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 15 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:13:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-19 10:13:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2022-07-19 10:13:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:13:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-07-19 10:13:49,173 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2022-07-19 10:13:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:13:49,174 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-07-19 10:13:49,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-19 10:13:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-07-19 10:13:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 10:13:49,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:13:49,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:13:49,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 10:13:49,395 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 [2022-07-19 10:13:49,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:13:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:13:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash 761451258, now seen corresponding path program 1 times [2022-07-19 10:13:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:13:49,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420869279] [2022-07-19 10:13:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:13:49,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:13:49,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933732265] [2022-07-19 10:13:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:49,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:13:49,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:13:49,415 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) [2022-07-19 10:13:49,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 10:13:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:13:49,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 10:13:49,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:13:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:13:49,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:13:49,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:13:49,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420869279] [2022-07-19 10:13:49,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:13:49,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933732265] [2022-07-19 10:13:49,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933732265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:13:49,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:13:49,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:13:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499788417] [2022-07-19 10:13:49,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:13:49,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:13:49,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:13:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:13:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:13:49,517 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:13:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:13:49,557 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-07-19 10:13:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:13:49,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-19 10:13:49,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:13:49,558 INFO L225 Difference]: With dead ends: 43 [2022-07-19 10:13:49,558 INFO L226 Difference]: Without dead ends: 27 [2022-07-19 10:13:49,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:13:49,560 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:13:49,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:13:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-19 10:13:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-07-19 10:13:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2022-07-19 10:13:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-19 10:13:49,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2022-07-19 10:13:49,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:13:49,565 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-19 10:13:49,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:13:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-19 10:13:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:13:49,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:13:49,567 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] [2022-07-19 10:13:49,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:13:49,783 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 [2022-07-19 10:13:49,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:13:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:13:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1879431543, now seen corresponding path program 1 times [2022-07-19 10:13:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:13:49,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962260642] [2022-07-19 10:13:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:13:49,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:13:49,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649090759] [2022-07-19 10:13:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:49,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:13:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:13:49,797 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) [2022-07-19 10:13:49,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 10:13:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:13:49,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 10:13:49,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:13:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:13:49,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:13:49,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:13:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962260642] [2022-07-19 10:13:49,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:13:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649090759] [2022-07-19 10:13:49,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649090759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:13:49,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:13:49,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 10:13:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822137920] [2022-07-19 10:13:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:13:49,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 10:13:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:13:49,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 10:13:49,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:13:49,891 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-07-19 10:13:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:13:49,965 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2022-07-19 10:13:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 10:13:49,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2022-07-19 10:13:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:13:49,966 INFO L225 Difference]: With dead ends: 75 [2022-07-19 10:13:49,966 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 10:13:49,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 10:13:49,968 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:13:49,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 45 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:13:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 10:13:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 25. [2022-07-19 10:13:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2022-07-19 10:13:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-07-19 10:13:49,975 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-07-19 10:13:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:13:49,975 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-07-19 10:13:49,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-07-19 10:13:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-07-19 10:13:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:13:49,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:13:49,976 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] [2022-07-19 10:13:50,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:13:50,203 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 [2022-07-19 10:13:50,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:13:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:13:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash 858363189, now seen corresponding path program 1 times [2022-07-19 10:13:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:13:50,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16386556] [2022-07-19 10:13:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:50,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:13:50,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:13:50,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271568205] [2022-07-19 10:13:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:13:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:13:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:13:50,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:13:50,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 10:13:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:13:50,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-19 10:13:50,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:13:50,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2022-07-19 10:13:50,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-07-19 10:13:50,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2022-07-19 10:13:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:13:50,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:14:01,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-07-19 10:14:01,165 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:14:01,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-19 10:14:01,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-07-19 10:14:01,183 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:14:01,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2022-07-19 10:14:01,787 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:14:01,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 111 [2022-07-19 10:14:25,996 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 10:14:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:14:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:27,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16386556] [2022-07-19 10:14:27,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:27,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271568205] [2022-07-19 10:14:27,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271568205] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:14:27,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:14:27,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2022-07-19 10:14:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619029661] [2022-07-19 10:14:27,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:14:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 10:14:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 10:14:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-19 10:14:27,689 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2022-07-19 10:14:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:27,690 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-07-19 10:14:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:14:27,691 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 22 [2022-07-19 10:14:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:27,691 INFO L225 Difference]: With dead ends: 25 [2022-07-19 10:14:27,692 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 10:14:27,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-19 10:14:27,695 INFO L413 NwaCegarLoop]: 0 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, 0 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 [2022-07-19 10:14:27,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:14:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 10:14:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 10:14:27,700 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) [2022-07-19 10:14:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 10:14:27,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-07-19 10:14:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:27,701 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 10:14:27,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2022-07-19 10:14:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 10:14:27,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 10:14:27,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 10:14:27,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:14:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:27,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 10:14:27,939 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-07-19 10:14:27,940 INFO L895 garLoopResultBuilder]: At program point L40(lines 35 41) the Hoare annotation is: false [2022-07-19 10:14:27,940 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 10:14:27,940 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 10:14:27,940 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 10:14:27,940 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2022-07-19 10:14:27,941 INFO L899 garLoopResultBuilder]: For program point L53-2(lines 53 55) no Hoare annotation was computed. [2022-07-19 10:14:27,941 INFO L895 garLoopResultBuilder]: At program point L53-3(lines 53 55) the Hoare annotation is: false [2022-07-19 10:14:27,941 INFO L899 garLoopResultBuilder]: For program point L53-4(lines 53 55) no Hoare annotation was computed. [2022-07-19 10:14:27,941 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 40) no Hoare annotation was computed. [2022-07-19 10:14:27,941 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 10:14:27,941 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-07-19 10:14:27,941 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2022-07-19 10:14:27,942 INFO L899 garLoopResultBuilder]: For program point L29-3(line 29) no Hoare annotation was computed. [2022-07-19 10:14:27,942 INFO L899 garLoopResultBuilder]: For program point L58-2(lines 58 60) no Hoare annotation was computed. [2022-07-19 10:14:27,942 INFO L895 garLoopResultBuilder]: At program point L58-3(lines 58 60) the Hoare annotation is: false [2022-07-19 10:14:27,942 INFO L899 garLoopResultBuilder]: For program point L58-4(lines 58 60) no Hoare annotation was computed. [2022-07-19 10:14:27,942 INFO L899 garLoopResultBuilder]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2022-07-19 10:14:27,942 INFO L895 garLoopResultBuilder]: At program point L54-3(lines 54 55) the Hoare annotation is: false [2022-07-19 10:14:27,942 INFO L902 garLoopResultBuilder]: At program point L63(lines 43 64) the Hoare annotation is: true [2022-07-19 10:14:27,943 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2022-07-19 10:14:27,943 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 59 60) no Hoare annotation was computed. [2022-07-19 10:14:27,943 INFO L895 garLoopResultBuilder]: At program point L59-3(lines 59 60) the Hoare annotation is: false [2022-07-19 10:14:27,946 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 10:14:27,948 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 10:14:27,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:14:27 BoogieIcfgContainer [2022-07-19 10:14:27,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 10:14:27,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 10:14:27,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 10:14:27,957 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 10:14:27,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:13:48" (3/4) ... [2022-07-19 10:14:27,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 10:14:27,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-19 10:14:27,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-19 10:14:27,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 10:14:27,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 10:14:28,008 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 10:14:28,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 10:14:28,009 INFO L158 Benchmark]: Toolchain (without parser) took 40333.16ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 58.5MB in the beginning and 66.5MB in the end (delta: -8.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,009 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:14:28,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.70ms. Allocated memory is still 88.1MB. Free memory was 58.3MB in the beginning and 65.1MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,010 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.81ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 63.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,010 INFO L158 Benchmark]: Boogie Preprocessor took 45.71ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 62.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,011 INFO L158 Benchmark]: RCFGBuilder took 361.11ms. Allocated memory is still 88.1MB. Free memory was 61.9MB in the beginning and 51.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,011 INFO L158 Benchmark]: TraceAbstraction took 39595.18ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 50.9MB in the beginning and 69.6MB in the end (delta: -18.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,011 INFO L158 Benchmark]: Witness Printer took 51.95ms. Allocated memory is still 113.2MB. Free memory was 68.6MB in the beginning and 66.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:14:28,015 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 88.1MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.70ms. Allocated memory is still 88.1MB. Free memory was 58.3MB in the beginning and 65.1MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.81ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 63.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.71ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 62.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.11ms. Allocated memory is still 88.1MB. Free memory was 61.9MB in the beginning and 51.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 39595.18ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 50.9MB in the beginning and 69.6MB in the end (delta: -18.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 51.95ms. Allocated memory is still 113.2MB. Free memory was 68.6MB in the beginning and 66.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 62 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 20, 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, 44 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 7 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 37.7s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 4 QuantifiedInterpolants, 1379 SizeOfPredicates, 32 NumberOfNonLiveVariables, 338 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 6/14 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: 58]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-07-19 10:14:28,046 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