./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/verifythis/elimination_max_rec_onepoint.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 4099afe4d4ae3c88800047494721799286636d7a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 09:02:29,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 09:02:29,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 09:02:29,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 09:02:29,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 09:02:29,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 09:02:29,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 09:02:29,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 09:02:29,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 09:02:29,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 09:02:29,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 09:02:29,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 09:02:29,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 09:02:29,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 09:02:29,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 09:02:29,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 09:02:29,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 09:02:29,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 09:02:29,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 09:02:29,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 09:02:29,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 09:02:29,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 09:02:29,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 09:02:29,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 09:02:29,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 09:02:29,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 09:02:29,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 09:02:29,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 09:02:29,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 09:02:29,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 09:02:29,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 09:02:29,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 09:02:29,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 09:02:29,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 09:02:29,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 09:02:29,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 09:02:29,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 09:02:29,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 09:02:29,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 09:02:29,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 09:02:29,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 09:02:29,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 09:02:29,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 09:02:29,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 09:02:29,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 09:02:29,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 09:02:29,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 09:02:29,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 09:02:29,959 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 09:02:29,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 09:02:29,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 09:02:29,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 09:02:29,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 09:02:29,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 09:02:29,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 09:02:29,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 09:02:29,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 09:02:29,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 09:02:29,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 09:02:29,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 09:02:29,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 09:02:29,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 09:02:29,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 09:02:29,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 09:02:29,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 09:02:29,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 09:02:29,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 09:02:29,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 09:02:29,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 09:02:29,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 09:02:29,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 09:02:29,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 09:02:29,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4099afe4d4ae3c88800047494721799286636d7a [2021-08-26 09:02:30,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 09:02:30,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 09:02:30,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 09:02:30,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 09:02:30,221 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 09:02:30,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-08-26 09:02:30,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b37bb637/61fe1c9d2af543c58f88f557d21949b4/FLAG1b246af68 [2021-08-26 09:02:30,590 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 09:02:30,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-08-26 09:02:30,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b37bb637/61fe1c9d2af543c58f88f557d21949b4/FLAG1b246af68 [2021-08-26 09:02:31,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b37bb637/61fe1c9d2af543c58f88f557d21949b4 [2021-08-26 09:02:31,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 09:02:31,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 09:02:31,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 09:02:31,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 09:02:31,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 09:02:31,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe6ef76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31, skipping insertion in model container [2021-08-26 09:02:31,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 09:02:31,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 09:02:31,143 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-08-26 09:02:31,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 09:02:31,185 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 09:02:31,200 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-08-26 09:02:31,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 09:02:31,258 INFO L208 MainTranslator]: Completed translation [2021-08-26 09:02:31,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31 WrapperNode [2021-08-26 09:02:31,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 09:02:31,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 09:02:31,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 09:02:31,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 09:02:31,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 09:02:31,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 09:02:31,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 09:02:31,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 09:02:31,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 09:02:31,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 09:02:31,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 09:02:31,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 09:02:31,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (1/1) ... [2021-08-26 09:02:31,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 09:02:31,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 09:02:31,381 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) [2021-08-26 09:02:31,413 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 [2021-08-26 09:02:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 09:02:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-08-26 09:02:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-08-26 09:02:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 09:02:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 09:02:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 09:02:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 09:02:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 09:02:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 09:02:31,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 09:02:31,769 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-26 09:02:31,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:02:31 BoogieIcfgContainer [2021-08-26 09:02:31,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 09:02:31,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 09:02:31,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 09:02:31,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 09:02:31,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:02:31" (1/3) ... [2021-08-26 09:02:31,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f76ea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:02:31, skipping insertion in model container [2021-08-26 09:02:31,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:02:31" (2/3) ... [2021-08-26 09:02:31,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f76ea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:02:31, skipping insertion in model container [2021-08-26 09:02:31,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:02:31" (3/3) ... [2021-08-26 09:02:31,775 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2021-08-26 09:02:31,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 09:02:31,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-26 09:02:31,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 09:02:31,808 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 09:02:31,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 09:02:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 29 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-26 09:02:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 09:02:31,820 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 09:02:31,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 09:02:31,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 09:02:31,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 09:02:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1674755782, now seen corresponding path program 1 times [2021-08-26 09:02:31,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 09:02:31,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632232348] [2021-08-26 09:02:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:31,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 09:02:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 09:02:31,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 09:02:31,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632232348] [2021-08-26 09:02:31,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632232348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 09:02:31,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 09:02:31,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 09:02:31,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388416905] [2021-08-26 09:02:31,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 09:02:31,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 09:02:31,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 09:02:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 09:02:31,928 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 29 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 09:02:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 09:02:31,939 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-26 09:02:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 09:02:31,940 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 09:02:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 09:02:31,954 INFO L225 Difference]: With dead ends: 63 [2021-08-26 09:02:31,954 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 09:02:31,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 09:02:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 09:02:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 09:02:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-26 09:02:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-08-26 09:02:31,980 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 12 [2021-08-26 09:02:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 09:02:31,980 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-08-26 09:02:31,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 09:02:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-08-26 09:02:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 09:02:31,983 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 09:02:31,983 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 09:02:31,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 09:02:31,984 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 09:02:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 09:02:31,986 INFO L82 PathProgramCache]: Analyzing trace with hash 472382146, now seen corresponding path program 1 times [2021-08-26 09:02:31,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 09:02:31,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530791095] [2021-08-26 09:02:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:31,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 09:02:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 09:02:32,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 09:02:32,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530791095] [2021-08-26 09:02:32,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530791095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 09:02:32,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 09:02:32,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 09:02:32,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650800986] [2021-08-26 09:02:32,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 09:02:32,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 09:02:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 09:02:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 09:02:32,079 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 09:02:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 09:02:32,190 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-08-26 09:02:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 09:02:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 09:02:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 09:02:32,193 INFO L225 Difference]: With dead ends: 58 [2021-08-26 09:02:32,193 INFO L226 Difference]: Without dead ends: 56 [2021-08-26 09:02:32,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 09:02:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-26 09:02:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2021-08-26 09:02:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 37 states have internal predecessors, (41), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-26 09:02:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-08-26 09:02:32,200 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 12 [2021-08-26 09:02:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 09:02:32,201 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-08-26 09:02:32,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 09:02:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-08-26 09:02:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 09:02:32,201 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 09:02:32,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 09:02:32,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 09:02:32,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 09:02:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 09:02:32,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1870344237, now seen corresponding path program 1 times [2021-08-26 09:02:32,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 09:02:32,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710940442] [2021-08-26 09:02:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:32,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 09:02:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-26 09:02:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 09:02:32,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 09:02:32,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710940442] [2021-08-26 09:02:32,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710940442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 09:02:32,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 09:02:32,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 09:02:32,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499475740] [2021-08-26 09:02:32,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 09:02:32,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 09:02:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 09:02:32,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 09:02:32,267 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-26 09:02:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 09:02:32,299 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-08-26 09:02:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 09:02:32,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-26 09:02:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 09:02:32,300 INFO L225 Difference]: With dead ends: 43 [2021-08-26 09:02:32,300 INFO L226 Difference]: Without dead ends: 39 [2021-08-26 09:02:32,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 09:02:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-26 09:02:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-26 09:02:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-26 09:02:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-08-26 09:02:32,306 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 15 [2021-08-26 09:02:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 09:02:32,306 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-08-26 09:02:32,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-26 09:02:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-08-26 09:02:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 09:02:32,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 09:02:32,307 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 09:02:32,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 09:02:32,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 09:02:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 09:02:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash -182584484, now seen corresponding path program 1 times [2021-08-26 09:02:32,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 09:02:32,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167771043] [2021-08-26 09:02:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:32,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 09:02:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 09:02:32,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 09:02:32,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167771043] [2021-08-26 09:02:32,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167771043] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 09:02:32,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395951886] [2021-08-26 09:02:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:32,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 09:02:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 09:02:32,433 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) [2021-08-26 09:02:32,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 09:02:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:32,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 09:02:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 09:02:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 09:02:32,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395951886] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 09:02:32,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 09:02:32,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-08-26 09:02:32,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026695362] [2021-08-26 09:02:32,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 09:02:32,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 09:02:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 09:02:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 09:02:32,638 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 09:02:32,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 09:02:32,797 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-08-26 09:02:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 09:02:32,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-26 09:02:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 09:02:32,798 INFO L225 Difference]: With dead ends: 52 [2021-08-26 09:02:32,798 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 09:02:32,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-08-26 09:02:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 09:02:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 23. [2021-08-26 09:02:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-26 09:02:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-26 09:02:32,806 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2021-08-26 09:02:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 09:02:32,807 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-26 09:02:32,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 09:02:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-26 09:02:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 09:02:32,808 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 09:02:32,808 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 09:02:32,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 09:02:33,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 09:02:33,023 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 09:02:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 09:02:33,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1944692544, now seen corresponding path program 1 times [2021-08-26 09:02:33,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 09:02:33,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196464199] [2021-08-26 09:02:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:33,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 09:02:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-08-26 09:02:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 09:02:33,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 09:02:33,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196464199] [2021-08-26 09:02:33,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196464199] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 09:02:33,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241948449] [2021-08-26 09:02:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 09:02:33,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 09:02:33,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 09:02:33,105 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) [2021-08-26 09:02:33,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 09:02:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 09:02:33,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 09:02:33,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 09:02:33,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 7 treesize of output 6 [2021-08-26 09:02:35,270 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2021-08-26 09:02:35,330 INFO L388 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 47 treesize of output 41 [2021-08-26 09:02:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-08-26 09:02:35,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241948449] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 09:02:35,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 09:02:35,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2021-08-26 09:02:35,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779934093] [2021-08-26 09:02:35,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 09:02:35,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 09:02:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 09:02:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2021-08-26 09:02:35,383 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-26 09:02:35,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 09:02:35,442 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-08-26 09:02:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 09:02:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-08-26 09:02:35,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 09:02:35,443 INFO L225 Difference]: With dead ends: 25 [2021-08-26 09:02:35,443 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 09:02:35,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2069.0ms TimeCoverageRelationStatistics Valid=38, Invalid=97, Unknown=1, NotChecked=20, Total=156 [2021-08-26 09:02:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 09:02:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 09:02:35,444 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) [2021-08-26 09:02:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 09:02:35,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-08-26 09:02:35,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 09:02:35,444 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 09:02:35,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-26 09:02:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 09:02:35,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 09:02:35,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 09:02:35,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 09:02:35,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 09:02:35,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 09:02:35,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 09:02:35,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 09:02:35,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 09:02:35,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 09:02:35,797 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 09:02:35,798 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 09:02:35,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,799 INFO L860 garLoopResultBuilder]: At program point L53(lines 40 54) the Hoare annotation is: true [2021-08-26 09:02:35,799 INFO L853 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc17.base|) .cse0) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)))) [2021-08-26 09:02:35,799 INFO L857 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2021-08-26 09:02:35,799 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-08-26 09:02:35,799 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 09:02:35,799 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L860 garLoopResultBuilder]: At program point checkENTRY(lines 16 38) the Hoare annotation is: true [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,800 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 09:02:35,801 INFO L857 garLoopResultBuilder]: For program point L11-4(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,801 INFO L857 garLoopResultBuilder]: For program point checkFINAL(lines 16 38) no Hoare annotation was computed. [2021-08-26 09:02:35,801 INFO L857 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-08-26 09:02:35,801 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 27) no Hoare annotation was computed. [2021-08-26 09:02:35,801 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 26 27) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0))) (or (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse2 (<= 1 check___VERIFIER_assert_~cond)) (.cse3 (<= (+ check_~y 1) check_~n))) (or (and (= check_~x 0) .cse1 .cse2 .cse3) (and .cse2 .cse3 (<= 1 check_~x)))) (= .cse0 (select |#memory_int| check_~a.base))) (let ((.cse4 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or (not .cse1) .cse4) (or (not (<= 1 |check_#in~x|)) .cse4))))) [2021-08-26 09:02:35,801 INFO L857 garLoopResultBuilder]: For program point checkEXIT(lines 16 38) no Hoare annotation was computed. [2021-08-26 09:02:35,801 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-08-26 09:02:35,802 INFO L857 garLoopResultBuilder]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-08-26 09:02:35,802 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 09:02:35,805 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 09:02:35,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:02:35 BoogieIcfgContainer [2021-08-26 09:02:35,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 09:02:35,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 09:02:35,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 09:02:35,810 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 09:02:35,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:02:31" (3/4) ... [2021-08-26 09:02:35,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 09:02:35,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-08-26 09:02:35,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-08-26 09:02:35,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-26 09:02:35,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 09:02:35,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 09:02:35,849 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 09:02:35,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 09:02:35,850 INFO L168 Benchmark]: Toolchain (without parser) took 4840.33 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 28.1 MB in the beginning and 64.4 MB in the end (delta: -36.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-08-26 09:02:35,850 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 32.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 09:02:35,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.99 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.9 MB in the beginning and 53.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-08-26 09:02:35,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.84 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 51.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 09:02:35,851 INFO L168 Benchmark]: Boogie Preprocessor took 22.60 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 50.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 09:02:35,851 INFO L168 Benchmark]: RCFGBuilder took 425.71 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 49.8 MB in the end (delta: 822.5 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-08-26 09:02:35,851 INFO L168 Benchmark]: TraceAbstraction took 4037.37 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 49.3 MB in the beginning and 68.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-26 09:02:35,852 INFO L168 Benchmark]: Witness Printer took 39.72 ms. Allocated memory is still 107.0 MB. Free memory was 68.4 MB in the beginning and 64.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 09:02:35,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 32.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.99 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.9 MB in the beginning and 53.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.84 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 51.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.60 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 50.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 425.71 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 49.8 MB in the end (delta: 822.5 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4037.37 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 49.3 MB in the beginning and 68.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 39.72 ms. Allocated memory is still 107.0 MB. Free memory was 68.4 MB in the beginning and 64.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: 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 2 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4001.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 13.1ms, AutomataDifference: 407.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 100.5ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 146 SDtfs, 194 SDslu, 275 SDs, 0 SdLazy, 207 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2280.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 81 HoareAnnotationTreeSize, 10 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 30.5ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 99 FormulaSimplificationTreeSizeReductionInter, 64.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 122.2ms SatisfiabilityAnalysisTime, 2610.3ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 118 ConstructedInterpolants, 4 QuantifiedInterpolants, 459 SizeOfPredicates, 21 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 2/10 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 3 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 09:02:35,883 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...