./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:05:36,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:05:36,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:05:36,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:05:36,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:05:36,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:05:36,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:05:36,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:05:36,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:05:36,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:05:36,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:05:36,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:05:36,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:05:36,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:05:36,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:05:36,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:05:36,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:05:36,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:05:36,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:05:36,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:05:36,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:05:36,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:05:36,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:05:36,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:05:36,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:05:36,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:05:36,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:05:36,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:05:36,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:05:36,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:05:36,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:05:36,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:05:36,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:05:36,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:05:36,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:05:36,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:05:36,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:05:36,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:05:36,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:05:36,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:05:36,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:05:36,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:05:36,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:05:36,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:05:36,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:05:36,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:05:36,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:05:36,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:05:36,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:05:36,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:05:36,323 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:05:36,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:05:36,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:05:36,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:05:36,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:05:36,326 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:05:36,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:05:36,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:05:36,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:05:36,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:05:36,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:05:36,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:36,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:05:36,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:05:36,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:05:36,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:05:36,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:05:36,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-12-22 00:05:36,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:05:36,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:05:36,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:05:36,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:05:36,553 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:05:36,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-12-22 00:05:36,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87588b5db/0dc7090e14294c79aea47cb3cd17abb5/FLAG9d4c78cdf [2021-12-22 00:05:37,069 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:05:37,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-12-22 00:05:37,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87588b5db/0dc7090e14294c79aea47cb3cd17abb5/FLAG9d4c78cdf [2021-12-22 00:05:37,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87588b5db/0dc7090e14294c79aea47cb3cd17abb5 [2021-12-22 00:05:37,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:05:37,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:05:37,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:37,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:05:37,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:05:37,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3628a1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37, skipping insertion in model container [2021-12-22 00:05:37,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:05:37,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:37,683 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/list-ext-properties/list-ext.i[23551,23564] [2021-12-22 00:05:37,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:37,698 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:05:37,740 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/list-ext-properties/list-ext.i[23551,23564] [2021-12-22 00:05:37,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:37,769 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:05:37,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37 WrapperNode [2021-12-22 00:05:37,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:37,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:37,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:05:37,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:05:37,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,820 INFO L137 Inliner]: procedures = 124, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 128 [2021-12-22 00:05:37,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:37,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:05:37,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:05:37,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:05:37,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:05:37,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:05:37,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:05:37,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:05:37,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (1/1) ... [2021-12-22 00:05:37,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:37,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:05:37,886 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) [2021-12-22 00:05:37,892 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 [2021-12-22 00:05:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-22 00:05:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-22 00:05:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 00:05:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 00:05:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:05:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:05:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 00:05:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 00:05:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:05:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 00:05:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:05:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:05:37,999 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:05:38,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:05:38,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-22 00:05:38,288 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:05:38,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:05:38,293 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-22 00:05:38,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:38 BoogieIcfgContainer [2021-12-22 00:05:38,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:05:38,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:05:38,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:05:38,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:05:38,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:05:37" (1/3) ... [2021-12-22 00:05:38,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599a2777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:38, skipping insertion in model container [2021-12-22 00:05:38,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:37" (2/3) ... [2021-12-22 00:05:38,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599a2777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:38, skipping insertion in model container [2021-12-22 00:05:38,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:38" (3/3) ... [2021-12-22 00:05:38,314 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-12-22 00:05:38,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:05:38,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-12-22 00:05:38,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:05:38,346 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-22 00:05:38,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-12-22 00:05:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 91 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 00:05:38,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:38,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:38,361 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2098269937, now seen corresponding path program 1 times [2021-12-22 00:05:38,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:38,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232471383] [2021-12-22 00:05:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:38,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:38,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:05:38,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232471383] [2021-12-22 00:05:38,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232471383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:38,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:38,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:38,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920281272] [2021-12-22 00:05:38,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:38,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 00:05:38,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:05:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 00:05:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 00:05:38,510 INFO L87 Difference]: Start difference. First operand has 93 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 91 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:38,527 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-12-22 00:05:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 00:05:38,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 00:05:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:38,534 INFO L225 Difference]: With dead ends: 93 [2021-12-22 00:05:38,534 INFO L226 Difference]: Without dead ends: 86 [2021-12-22 00:05:38,535 INFO L932 BasicCegarLoop]: 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 [2021-12-22 00:05:38,538 INFO L933 BasicCegarLoop]: 102 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, 102 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 [2021-12-22 00:05:38,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:05:38,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-22 00:05:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-12-22 00:05:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 85 states have internal predecessors, (92), 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) [2021-12-22 00:05:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-12-22 00:05:38,566 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2021-12-22 00:05:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:38,567 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-12-22 00:05:38,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-12-22 00:05:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 00:05:38,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:38,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:38,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 00:05:38,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash 620871786, now seen corresponding path program 1 times [2021-12-22 00:05:38,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:38,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41455621] [2021-12-22 00:05:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:38,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:38,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:05:38,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41455621] [2021-12-22 00:05:38,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41455621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:38,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:38,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:38,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453324584] [2021-12-22 00:05:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:38,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:38,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:05:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:38,660 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:38,829 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2021-12-22 00:05:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:38,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 00:05:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:38,831 INFO L225 Difference]: With dead ends: 107 [2021-12-22 00:05:38,831 INFO L226 Difference]: Without dead ends: 107 [2021-12-22 00:05:38,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:38,832 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 160 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:38,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 52 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-22 00:05:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2021-12-22 00:05:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 86 states have internal predecessors, (103), 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) [2021-12-22 00:05:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-12-22 00:05:38,838 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2021-12-22 00:05:38,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:38,838 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-12-22 00:05:38,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-12-22 00:05:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 00:05:38,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:38,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:38,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 00:05:38,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 620871787, now seen corresponding path program 1 times [2021-12-22 00:05:38,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:38,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167839029] [2021-12-22 00:05:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:38,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:38,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:05:38,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167839029] [2021-12-22 00:05:38,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167839029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:38,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:38,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:38,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27134640] [2021-12-22 00:05:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:38,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:38,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:05:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:38,911 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:39,036 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2021-12-22 00:05:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:05:39,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 00:05:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:39,040 INFO L225 Difference]: With dead ends: 124 [2021-12-22 00:05:39,041 INFO L226 Difference]: Without dead ends: 124 [2021-12-22 00:05:39,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:39,047 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 167 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 60 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-22 00:05:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2021-12-22 00:05:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.5125) internal successors, (121), 106 states have internal predecessors, (121), 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) [2021-12-22 00:05:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-12-22 00:05:39,062 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2021-12-22 00:05:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:39,062 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-12-22 00:05:39,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-12-22 00:05:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:39,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:39,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:39,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 00:05:39,064 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:39,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1332204644, now seen corresponding path program 1 times [2021-12-22 00:05:39,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529262949] [2021-12-22 00:05:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:39,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:39,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:05:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529262949] [2021-12-22 00:05:39,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529262949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:39,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:39,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:39,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083850196] [2021-12-22 00:05:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:39,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:05:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:39,140 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:39,332 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2021-12-22 00:05:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:39,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:39,334 INFO L225 Difference]: With dead ends: 152 [2021-12-22 00:05:39,334 INFO L226 Difference]: Without dead ends: 152 [2021-12-22 00:05:39,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:05:39,335 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 115 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:39,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 240 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-22 00:05:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2021-12-22 00:05:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 110 states have internal predecessors, (129), 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) [2021-12-22 00:05:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2021-12-22 00:05:39,340 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2021-12-22 00:05:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:39,341 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2021-12-22 00:05:39,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2021-12-22 00:05:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:39,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:39,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:39,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 00:05:39,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1332204645, now seen corresponding path program 1 times [2021-12-22 00:05:39,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:39,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568067504] [2021-12-22 00:05:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:39,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:39,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:05:39,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568067504] [2021-12-22 00:05:39,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568067504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:39,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:39,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:39,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617412345] [2021-12-22 00:05:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:39,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:39,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:05:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:39,417 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:39,645 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2021-12-22 00:05:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:05:39,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:39,647 INFO L225 Difference]: With dead ends: 155 [2021-12-22 00:05:39,647 INFO L226 Difference]: Without dead ends: 155 [2021-12-22 00:05:39,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:05:39,648 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 79 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:39,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 307 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-22 00:05:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2021-12-22 00:05:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 94 states have internal predecessors, (107), 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) [2021-12-22 00:05:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2021-12-22 00:05:39,652 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2021-12-22 00:05:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:39,652 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2021-12-22 00:05:39,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2021-12-22 00:05:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:05:39,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:39,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:39,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 00:05:39,654 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:39,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:39,654 INFO L85 PathProgramCache]: Analyzing trace with hash -808483032, now seen corresponding path program 1 times [2021-12-22 00:05:39,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:39,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980835814] [2021-12-22 00:05:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:39,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:39,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 00:05:39,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980835814] [2021-12-22 00:05:39,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980835814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:39,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:39,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:05:39,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554191146] [2021-12-22 00:05:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:39,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:05:39,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 00:05:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:05:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:39,715 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:39,844 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2021-12-22 00:05:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-22 00:05:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:39,845 INFO L225 Difference]: With dead ends: 187 [2021-12-22 00:05:39,846 INFO L226 Difference]: Without dead ends: 187 [2021-12-22 00:05:39,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:05:39,846 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 118 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:39,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 231 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-22 00:05:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2021-12-22 00:05:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 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) [2021-12-22 00:05:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-12-22 00:05:39,851 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2021-12-22 00:05:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:39,851 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-12-22 00:05:39,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-12-22 00:05:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:05:39,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:39,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:39,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 00:05:39,852 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 389256394, now seen corresponding path program 1 times [2021-12-22 00:05:39,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 00:05:39,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577282994] [2021-12-22 00:05:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:39,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 00:05:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 00:05:39,886 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 00:05:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 00:05:39,907 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 00:05:39,908 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 00:05:39,908 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-12-22 00:05:39,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-12-22 00:05:39,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-12-22 00:05:39,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-12-22 00:05:39,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-12-22 00:05:39,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-12-22 00:05:39,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-12-22 00:05:39,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-12-22 00:05:39,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-12-22 00:05:39,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-12-22 00:05:39,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-12-22 00:05:39,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-12-22 00:05:39,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-12-22 00:05:39,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-12-22 00:05:39,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-12-22 00:05:39,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-12-22 00:05:39,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-12-22 00:05:39,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-12-22 00:05:39,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-12-22 00:05:39,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-12-22 00:05:39,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 00:05:39,918 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:39,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 00:05:39,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:05:39 BoogieIcfgContainer [2021-12-22 00:05:39,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 00:05:39,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 00:05:39,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 00:05:39,937 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 00:05:39,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:38" (3/4) ... [2021-12-22 00:05:39,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 00:05:39,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 00:05:39,940 INFO L158 Benchmark]: Toolchain (without parser) took 2531.75ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 77.1MB in the beginning and 108.8MB in the end (delta: -31.7MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-12-22 00:05:39,940 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:39,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.36ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 77.1MB in the beginning and 109.9MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 00:05:39,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.56ms. Allocated memory is still 142.6MB. Free memory was 109.2MB in the beginning and 107.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:05:39,941 INFO L158 Benchmark]: Boogie Preprocessor took 41.93ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:05:39,941 INFO L158 Benchmark]: RCFGBuilder took 431.36ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 87.6MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 00:05:39,941 INFO L158 Benchmark]: TraceAbstraction took 1640.34ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 108.8MB in the end (delta: -22.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:39,941 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 142.6MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:39,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.36ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 77.1MB in the beginning and 109.9MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.56ms. Allocated memory is still 142.6MB. Free memory was 109.2MB in the beginning and 107.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.93ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.36ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 87.6MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1640.34ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 108.8MB in the end (delta: -22.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 142.6MB. Free memory is still 108.8MB. There was no memory consumed. 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 94 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 639 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 992 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 587 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 972 IncrementalHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 405 mSDtfsCounter, 972 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=4, InterpolantAutomatonStates: 33, 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, 6 MinimizatonAttempts, 219 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 9/9 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 00:05:39,981 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:05:41,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:05:41,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:05:41,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:05:41,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:05:41,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:05:41,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:05:41,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:05:41,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:05:41,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:05:41,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:05:41,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:05:41,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:05:41,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:05:41,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:05:41,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:05:41,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:05:41,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:05:41,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:05:41,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:05:41,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:05:41,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:05:41,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:05:41,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:05:41,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:05:41,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:05:41,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:05:41,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:05:41,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:05:41,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:05:41,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:05:41,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:05:41,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:05:41,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:05:41,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:05:41,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:05:41,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:05:41,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:05:41,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:05:41,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:05:41,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:05:41,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 00:05:41,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:05:41,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:05:41,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:05:41,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:05:41,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:05:41,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:05:41,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:05:41,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:05:41,838 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:05:41,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:05:41,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:05:41,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:05:41,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:05:41,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:05:41,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:05:41,840 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:05:41,840 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:05:41,840 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:05:41,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:05:41,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:05:41,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 00:05:41,841 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 00:05:41,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:05:41,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:05:41,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:05:41,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:05:41,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:05:41,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:41,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:05:41,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:05:41,843 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 00:05:41,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:41,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:05:41,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 00:05:41,844 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75539a96800eea0d91d3dad14f0ad356c5f8079fa4f6dcf5bbfcb193296a44a8 [2021-12-22 00:05:42,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:05:42,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:05:42,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:05:42,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:05:42,144 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:05:42,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-12-22 00:05:42,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b1cb5c8/8be0174e09254092a4035637ef04477a/FLAGe0f323ea5 [2021-12-22 00:05:42,668 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:05:42,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-12-22 00:05:42,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b1cb5c8/8be0174e09254092a4035637ef04477a/FLAGe0f323ea5 [2021-12-22 00:05:43,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b1cb5c8/8be0174e09254092a4035637ef04477a [2021-12-22 00:05:43,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:05:43,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:05:43,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:43,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:05:43,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:05:43,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58561aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43, skipping insertion in model container [2021-12-22 00:05:43,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:05:43,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:43,295 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/list-ext-properties/list-ext.i[23551,23564] [2021-12-22 00:05:43,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:43,310 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:05:43,362 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/list-ext-properties/list-ext.i[23551,23564] [2021-12-22 00:05:43,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:43,392 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:05:43,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43 WrapperNode [2021-12-22 00:05:43,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:43,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:43,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:05:43,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:05:43,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,449 INFO L137 Inliner]: procedures = 127, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2021-12-22 00:05:43,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:43,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:05:43,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:05:43,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:05:43,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:05:43,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:05:43,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:05:43,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:05:43,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (1/1) ... [2021-12-22 00:05:43,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:43,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:05:43,504 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) [2021-12-22 00:05:43,506 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 [2021-12-22 00:05:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-22 00:05:43,529 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-22 00:05:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 00:05:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:05:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:05:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 00:05:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 00:05:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:05:43,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 00:05:43,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 00:05:43,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:05:43,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:05:43,597 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:05:43,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:05:43,628 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-22 00:05:43,948 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:05:43,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:05:43,953 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-22 00:05:43,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:43 BoogieIcfgContainer [2021-12-22 00:05:43,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:05:43,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:05:43,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:05:43,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:05:43,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:05:43" (1/3) ... [2021-12-22 00:05:43,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c54c33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:43, skipping insertion in model container [2021-12-22 00:05:43,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:43" (2/3) ... [2021-12-22 00:05:43,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c54c33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:43, skipping insertion in model container [2021-12-22 00:05:43,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:43" (3/3) ... [2021-12-22 00:05:43,969 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-12-22 00:05:43,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:05:43,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-12-22 00:05:43,998 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:05:44,002 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-22 00:05:44,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-12-22 00:05:44,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 47 states have (on average 2.106382978723404) internal successors, (99), 87 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 00:05:44,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:44,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 00:05:44,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516551, now seen corresponding path program 1 times [2021-12-22 00:05:44,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:44,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678956818] [2021-12-22 00:05:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:44,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:44,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:44,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:44,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 00:05:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:44,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:05:44,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:44,178 INFO L387 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:44,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:44,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:44,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678956818] [2021-12-22 00:05:44,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678956818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:44,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:44,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:44,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067410952] [2021-12-22 00:05:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:44,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:44,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:44,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:44,252 INFO L87 Difference]: Start difference. First operand has 89 states, 47 states have (on average 2.106382978723404) internal successors, (99), 87 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-22 00:05:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:44,503 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-12-22 00:05:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:44,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-22 00:05:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:44,511 INFO L225 Difference]: With dead ends: 106 [2021-12-22 00:05:44,512 INFO L226 Difference]: Without dead ends: 99 [2021-12-22 00:05:44,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:44,516 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 149 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:44,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 55 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-22 00:05:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2021-12-22 00:05:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.75) internal successors, (91), 78 states have internal predecessors, (91), 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) [2021-12-22 00:05:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-12-22 00:05:44,542 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 6 [2021-12-22 00:05:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:44,542 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-12-22 00:05:44,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-22 00:05:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-12-22 00:05:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 00:05:44,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:44,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 00:05:44,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:44,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:44,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516552, now seen corresponding path program 1 times [2021-12-22 00:05:44,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:44,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445579259] [2021-12-22 00:05:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:44,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:44,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:44,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:44,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 00:05:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:44,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 00:05:44,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:44,814 INFO L387 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:44,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:44,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:44,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445579259] [2021-12-22 00:05:44,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445579259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:44,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:44,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:44,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189214992] [2021-12-22 00:05:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:44,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:44,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:44,870 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-22 00:05:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:45,163 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2021-12-22 00:05:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:05:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-22 00:05:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:45,164 INFO L225 Difference]: With dead ends: 116 [2021-12-22 00:05:45,165 INFO L226 Difference]: Without dead ends: 116 [2021-12-22 00:05:45,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:45,166 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 151 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:45,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 48 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-22 00:05:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2021-12-22 00:05:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.5138888888888888) internal successors, (109), 98 states have internal predecessors, (109), 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) [2021-12-22 00:05:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-12-22 00:05:45,182 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 6 [2021-12-22 00:05:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:45,183 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-12-22 00:05:45,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-22 00:05:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-12-22 00:05:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 00:05:45,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:45,185 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:45,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:45,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:45,393 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769667, now seen corresponding path program 1 times [2021-12-22 00:05:45,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:45,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791760165] [2021-12-22 00:05:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:45,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:45,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:45,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 00:05:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:45,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:05:45,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:45,473 INFO L387 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:45,490 INFO L387 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 13 treesize of output 9 [2021-12-22 00:05:45,507 INFO L387 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 21 treesize of output 9 [2021-12-22 00:05:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:45,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:45,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:45,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791760165] [2021-12-22 00:05:45,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791760165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:45,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:45,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:45,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867807380] [2021-12-22 00:05:45,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:45,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:45,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:45,527 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:46,060 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-12-22 00:05:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:46,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 00:05:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:46,068 INFO L225 Difference]: With dead ends: 142 [2021-12-22 00:05:46,069 INFO L226 Difference]: Without dead ends: 142 [2021-12-22 00:05:46,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:05:46,073 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 105 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:46,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 180 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 00:05:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-22 00:05:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2021-12-22 00:05:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.52) internal successors, (114), 100 states have internal predecessors, (114), 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) [2021-12-22 00:05:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2021-12-22 00:05:46,096 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 13 [2021-12-22 00:05:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:46,096 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2021-12-22 00:05:46,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2021-12-22 00:05:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 00:05:46,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:46,099 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:46,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:46,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:46,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769666, now seen corresponding path program 1 times [2021-12-22 00:05:46,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:46,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268647465] [2021-12-22 00:05:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:46,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:46,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:46,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:46,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 00:05:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:46,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:05:46,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:46,407 INFO L387 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:46,451 INFO L387 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 13 treesize of output 9 [2021-12-22 00:05:46,457 INFO L387 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 13 treesize of output 9 [2021-12-22 00:05:46,490 INFO L387 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 21 treesize of output 9 [2021-12-22 00:05:46,497 INFO L387 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 19 treesize of output 7 [2021-12-22 00:05:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:46,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:46,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:46,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268647465] [2021-12-22 00:05:46,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268647465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:46,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:46,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:46,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097181550] [2021-12-22 00:05:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:46,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:46,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:46,536 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:47,024 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2021-12-22 00:05:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:05:47,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 00:05:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:47,026 INFO L225 Difference]: With dead ends: 145 [2021-12-22 00:05:47,026 INFO L226 Difference]: Without dead ends: 145 [2021-12-22 00:05:47,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:05:47,026 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 69 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:47,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 247 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 00:05:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-22 00:05:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 89. [2021-12-22 00:05:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 88 states have internal predecessors, (98), 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) [2021-12-22 00:05:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-12-22 00:05:47,031 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 13 [2021-12-22 00:05:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:47,032 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-12-22 00:05:47,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-12-22 00:05:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 00:05:47,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:47,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:47,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-22 00:05:47,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:47,237 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash 174166817, now seen corresponding path program 1 times [2021-12-22 00:05:47,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:47,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710347723] [2021-12-22 00:05:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:47,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:47,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:47,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:47,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 00:05:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:47,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:05:47,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:47,362 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:47,392 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-22 00:05:47,392 INFO L387 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-22 00:05:47,411 INFO L387 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 15 treesize of output 7 [2021-12-22 00:05:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:47,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:47,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:47,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710347723] [2021-12-22 00:05:47,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710347723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:47,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:47,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 00:05:47,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346559619] [2021-12-22 00:05:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:47,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:05:47,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:47,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:05:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:47,424 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:47,711 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-12-22 00:05:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:47,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-22 00:05:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:47,712 INFO L225 Difference]: With dead ends: 177 [2021-12-22 00:05:47,712 INFO L226 Difference]: Without dead ends: 177 [2021-12-22 00:05:47,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:05:47,713 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 116 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:47,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 195 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-22 00:05:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 96. [2021-12-22 00:05:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.4657534246575343) internal successors, (107), 95 states have internal predecessors, (107), 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) [2021-12-22 00:05:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-12-22 00:05:47,717 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 14 [2021-12-22 00:05:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:47,718 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-12-22 00:05:47,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2021-12-22 00:05:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 00:05:47,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:47,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:47,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:47,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:47,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:47,930 INFO L85 PathProgramCache]: Analyzing trace with hash 916718725, now seen corresponding path program 1 times [2021-12-22 00:05:47,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:47,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830379117] [2021-12-22 00:05:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:47,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:47,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:47,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:47,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 00:05:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:47,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:05:47,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:48,013 INFO L387 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:48,027 INFO L387 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 13 treesize of output 9 [2021-12-22 00:05:48,042 INFO L387 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 21 treesize of output 9 [2021-12-22 00:05:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:48,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:48,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:48,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830379117] [2021-12-22 00:05:48,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830379117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:48,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:48,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:48,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002654819] [2021-12-22 00:05:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:48,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:48,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:48,064 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:48,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:48,358 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2021-12-22 00:05:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:48,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-22 00:05:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:48,359 INFO L225 Difference]: With dead ends: 124 [2021-12-22 00:05:48,359 INFO L226 Difference]: Without dead ends: 124 [2021-12-22 00:05:48,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:05:48,360 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:48,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 161 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:48,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-22 00:05:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 94. [2021-12-22 00:05:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 93 states have internal predecessors, (105), 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) [2021-12-22 00:05:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2021-12-22 00:05:48,365 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 14 [2021-12-22 00:05:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:48,365 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2021-12-22 00:05:48,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2021-12-22 00:05:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 00:05:48,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:48,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:48,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:48,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:48,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash 916718726, now seen corresponding path program 1 times [2021-12-22 00:05:48,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:48,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933130162] [2021-12-22 00:05:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:48,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:48,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:48,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 00:05:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:48,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:05:48,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:48,642 INFO L387 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:48,663 INFO L387 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 13 treesize of output 9 [2021-12-22 00:05:48,669 INFO L387 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 13 treesize of output 9 [2021-12-22 00:05:48,694 INFO L387 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 21 treesize of output 9 [2021-12-22 00:05:48,697 INFO L387 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 19 treesize of output 7 [2021-12-22 00:05:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:48,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:48,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:48,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933130162] [2021-12-22 00:05:48,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933130162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:48,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:48,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:48,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267567508] [2021-12-22 00:05:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:48,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:48,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:48,728 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:49,128 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-12-22 00:05:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:05:49,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-22 00:05:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:49,129 INFO L225 Difference]: With dead ends: 122 [2021-12-22 00:05:49,129 INFO L226 Difference]: Without dead ends: 122 [2021-12-22 00:05:49,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:05:49,130 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 61 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:49,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 221 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-22 00:05:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 81. [2021-12-22 00:05:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.4) internal successors, (91), 80 states have internal predecessors, (91), 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) [2021-12-22 00:05:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2021-12-22 00:05:49,133 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 14 [2021-12-22 00:05:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:49,133 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2021-12-22 00:05:49,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2021-12-22 00:05:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 00:05:49,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:49,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:49,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-22 00:05:49,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,340 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-12-22 00:05:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash -177044285, now seen corresponding path program 1 times [2021-12-22 00:05:49,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:49,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525674605] [2021-12-22 00:05:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:49,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:49,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:49,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 00:05:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 00:05:49,393 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 00:05:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 00:05:49,428 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-22 00:05:49,428 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 00:05:49,429 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-12-22 00:05:49,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-12-22 00:05:49,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-12-22 00:05:49,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-12-22 00:05:49,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-12-22 00:05:49,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-12-22 00:05:49,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-12-22 00:05:49,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-12-22 00:05:49,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-12-22 00:05:49,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-12-22 00:05:49,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-12-22 00:05:49,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-12-22 00:05:49,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-12-22 00:05:49,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-12-22 00:05:49,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-12-22 00:05:49,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:49,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,637 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:49,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 00:05:49,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:05:49 BoogieIcfgContainer [2021-12-22 00:05:49,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 00:05:49,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 00:05:49,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 00:05:49,670 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 00:05:49,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:43" (3/4) ... [2021-12-22 00:05:49,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 00:05:49,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 00:05:49,673 INFO L158 Benchmark]: Toolchain (without parser) took 6659.03ms. Allocated memory was 54.5MB in the beginning and 100.7MB in the end (delta: 46.1MB). Free memory was 31.0MB in the beginning and 64.7MB in the end (delta: -33.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-12-22 00:05:49,673 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:49,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.45ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 30.8MB in the beginning and 60.5MB in the end (delta: -29.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-22 00:05:49,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.26ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 58.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:05:49,674 INFO L158 Benchmark]: Boogie Preprocessor took 27.12ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 56.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:05:49,674 INFO L158 Benchmark]: RCFGBuilder took 481.43ms. Allocated memory is still 83.9MB. Free memory was 56.3MB in the beginning and 55.3MB in the end (delta: 979.7kB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-12-22 00:05:49,674 INFO L158 Benchmark]: TraceAbstraction took 5708.83ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 55.0MB in the beginning and 64.7MB in the end (delta: -9.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-12-22 00:05:49,675 INFO L158 Benchmark]: Witness Printer took 3.48ms. Allocated memory is still 100.7MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:49,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.45ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 30.8MB in the beginning and 60.5MB in the end (delta: -29.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.26ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 58.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.12ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 56.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.43ms. Allocated memory is still 83.9MB. Free memory was 56.3MB in the beginning and 55.3MB in the end (delta: 979.7kB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5708.83ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 55.0MB in the beginning and 64.7MB in the end (delta: -9.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Witness Printer took 3.48ms. Allocated memory is still 100.7MB. Free memory is still 64.7MB. There was no memory consumed. 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) VAL [a={6:0}, i=0, y=0] [L536] List t; [L537] List p = a; VAL [a={6:0}, i=0, p={6:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={6:0}, i=0, p={6:0}, y=0] [L555] p->n = 0 VAL [a={6:0}, i=0, p={6:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={6:0}, i=0, p={6:0}, y=0] [L559] EXPR p->h VAL [a={6:0}, i=0, p={6:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={6:0}, i=0, p={6:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={6:0}, i=0, p={6:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={6:0}, i=0, p={6:0}, y=0] - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 749 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 749 mSDsluCounter, 1107 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 711 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1450 IncrementalHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 396 mSDtfsCounter, 1450 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=3, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 286 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 346 SizeOfPredicates, 30 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 7/7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 00:05:49,720 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: UNKNOWN: Overapproximated counterexample