./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.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 0adf73b7dd596c46d6accaa4759d997d536c99cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/forester-heap/sll-rb-cnstr_1-2.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 0adf73b7dd596c46d6accaa4759d997d536c99cf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:41:11,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:41:11,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:41:11,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:41:11,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:41:11,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:41:11,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:41:11,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:41:11,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:41:11,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:41:11,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:41:11,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:41:11,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:41:11,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:41:11,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:41:11,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:41:11,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:41:11,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:41:11,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:41:11,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:41:11,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:41:11,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:41:11,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:41:11,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:41:11,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:41:11,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:41:11,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:41:11,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:41:11,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:41:11,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:41:11,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:41:11,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:41:11,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:41:11,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:41:11,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:41:11,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:41:11,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:41:11,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:41:11,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:41:11,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:41:11,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:41:11,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:41:11,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:41:11,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:41:11,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:41:11,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:41:11,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:41:11,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:41:11,314 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:41:11,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:41:11,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:41:11,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:41:11,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:41:11,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:41:11,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:41:11,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:41:11,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:41:11,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:41:11,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:41:11,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:41:11,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:41:11,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:41:11,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:41:11,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:41:11,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-08-27 06:41:11,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:41:11,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:41:11,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:41:11,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:41:11,671 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:41:11,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-27 06:41:11,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64958103/711491c9d69d4cdd86877e0683efd7de/FLAGe4ca76297 [2021-08-27 06:41:12,292 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:41:12,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-27 06:41:12,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64958103/711491c9d69d4cdd86877e0683efd7de/FLAGe4ca76297 [2021-08-27 06:41:12,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64958103/711491c9d69d4cdd86877e0683efd7de [2021-08-27 06:41:12,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:41:12,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:41:12,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:41:12,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:41:12,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:41:12,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:41:12" (1/1) ... [2021-08-27 06:41:12,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d81fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:12, skipping insertion in model container [2021-08-27 06:41:12,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:41:12" (1/1) ... [2021-08-27 06:41:12,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:41:12,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:41:13,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-08-27 06:41:13,102 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-08-27 06:41:13,106 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-08-27 06:41:13,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:41:13,129 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:41:13,169 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-08-27 06:41:13,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-08-27 06:41:13,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-08-27 06:41:13,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:41:13,206 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:41:13,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13 WrapperNode [2021-08-27 06:41:13,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:41:13,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:41:13,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:41:13,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:41:13,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:41:13,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:41:13,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:41:13,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:41:13,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (1/1) ... [2021-08-27 06:41:13,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:41:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:41:13,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 06:41:13,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 06:41:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:41:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:41:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 06:41:13,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:41:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:41:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:41:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:41:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:41:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:41:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:41:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:41:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:41:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:41:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:41:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:41:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:41:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:41:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:41:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:41:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:41:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:41:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:41:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:41:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:41:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:41:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:41:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:41:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:41:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:41:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:41:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:41:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:41:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:41:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:41:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:41:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:41:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:41:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:41:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:41:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:41:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 06:41:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:41:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:41:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:41:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:41:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:41:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:41:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:41:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:41:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:41:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:41:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:41:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:41:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:41:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:41:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:41:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:41:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:41:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:41:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:41:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:41:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:41:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:41:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:41:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:41:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:41:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:41:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:41:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:41:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:41:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:41:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 06:41:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 06:41:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 06:41:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 06:41:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:41:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:41:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:41:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:41:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 06:41:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:41:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 06:41:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:41:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:41:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 06:41:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:41:14,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:41:14,005 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-27 06:41:14,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:41:14 BoogieIcfgContainer [2021-08-27 06:41:14,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:41:14,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:41:14,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:41:14,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:41:14,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:41:12" (1/3) ... [2021-08-27 06:41:14,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc0e36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:41:14, skipping insertion in model container [2021-08-27 06:41:14,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:13" (2/3) ... [2021-08-27 06:41:14,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc0e36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:41:14, skipping insertion in model container [2021-08-27 06:41:14,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:41:14" (3/3) ... [2021-08-27 06:41:14,014 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-08-27 06:41:14,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:41:14,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-08-27 06:41:14,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:41:14,065 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, mConcurrency=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 [2021-08-27 06:41:14,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-08-27 06:41:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:41:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:41:14,094 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:14,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:14,095 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-08-27 06:41:14,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:14,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624294283] [2021-08-27 06:41:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:14,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:14,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:14,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624294283] [2021-08-27 06:41:14,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624294283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:14,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:14,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:41:14,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656526175] [2021-08-27 06:41:14,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:41:14,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:41:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:14,345 INFO L87 Difference]: Start difference. First operand has 126 states, 66 states have (on average 2.106060606060606) internal successors, (139), 121 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:14,607 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-08-27 06:41:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:41:14,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:41:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:14,620 INFO L225 Difference]: With dead ends: 127 [2021-08-27 06:41:14,620 INFO L226 Difference]: Without dead ends: 123 [2021-08-27 06:41:14,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-27 06:41:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-08-27 06:41:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.835820895522388) internal successors, (123), 115 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-08-27 06:41:14,662 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-08-27 06:41:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:14,662 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-08-27 06:41:14,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-08-27 06:41:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:41:14,663 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:14,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:14,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:41:14,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:14,664 INFO L82 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-08-27 06:41:14,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:14,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969526619] [2021-08-27 06:41:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:14,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:14,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:14,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969526619] [2021-08-27 06:41:14,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969526619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:14,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:14,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:41:14,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680410534] [2021-08-27 06:41:14,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:41:14,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:41:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:14,809 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:15,065 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-08-27 06:41:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:41:15,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:41:15,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:15,071 INFO L225 Difference]: With dead ends: 137 [2021-08-27 06:41:15,071 INFO L226 Difference]: Without dead ends: 137 [2021-08-27 06:41:15,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-08-27 06:41:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-08-27 06:41:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 120 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-08-27 06:41:15,096 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-08-27 06:41:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:15,097 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-08-27 06:41:15,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-08-27 06:41:15,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 06:41:15,098 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:15,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:15,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:41:15,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:15,099 INFO L82 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-08-27 06:41:15,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:15,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595599279] [2021-08-27 06:41:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:15,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:15,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:15,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595599279] [2021-08-27 06:41:15,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595599279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:15,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:15,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 06:41:15,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678093019] [2021-08-27 06:41:15,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:41:15,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:41:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:41:15,248 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:15,490 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-08-27 06:41:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:41:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 06:41:15,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:15,492 INFO L225 Difference]: With dead ends: 131 [2021-08-27 06:41:15,492 INFO L226 Difference]: Without dead ends: 131 [2021-08-27 06:41:15,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:41:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-27 06:41:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-08-27 06:41:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 112 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-08-27 06:41:15,510 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-08-27 06:41:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:15,511 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-08-27 06:41:15,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-08-27 06:41:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 06:41:15,511 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:15,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:15,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 06:41:15,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:15,512 INFO L82 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-08-27 06:41:15,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:15,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213868014] [2021-08-27 06:41:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:15,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:15,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:15,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213868014] [2021-08-27 06:41:15,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213868014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:15,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:15,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 06:41:15,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605275217] [2021-08-27 06:41:15,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:41:15,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:15,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:41:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:41:15,676 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:15,959 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-08-27 06:41:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:41:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-27 06:41:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:15,960 INFO L225 Difference]: With dead ends: 155 [2021-08-27 06:41:15,960 INFO L226 Difference]: Without dead ends: 155 [2021-08-27 06:41:15,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:41:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-27 06:41:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-08-27 06:41:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 88 states have (on average 1.5340909090909092) internal successors, (135), 122 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-08-27 06:41:15,974 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-08-27 06:41:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:15,974 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-08-27 06:41:15,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-08-27 06:41:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 06:41:15,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:15,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:15,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 06:41:15,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:15,976 INFO L82 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-08-27 06:41:15,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:15,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223407518] [2021-08-27 06:41:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:15,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:16,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:16,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223407518] [2021-08-27 06:41:16,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223407518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:16,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:16,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 06:41:16,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902277630] [2021-08-27 06:41:16,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:41:16,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:41:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:41:16,051 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:16,219 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-08-27 06:41:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:41:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-27 06:41:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:16,220 INFO L225 Difference]: With dead ends: 140 [2021-08-27 06:41:16,220 INFO L226 Difference]: Without dead ends: 140 [2021-08-27 06:41:16,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:41:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-27 06:41:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-08-27 06:41:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-08-27 06:41:16,224 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-08-27 06:41:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:16,224 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-08-27 06:41:16,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-08-27 06:41:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:41:16,225 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:16,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:16,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 06:41:16,225 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:16,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:16,226 INFO L82 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-08-27 06:41:16,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:16,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353701509] [2021-08-27 06:41:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:16,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:16,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:16,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353701509] [2021-08-27 06:41:16,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353701509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:16,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:16,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 06:41:16,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290601386] [2021-08-27 06:41:16,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:41:16,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:41:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:41:16,318 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:16,582 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-08-27 06:41:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 06:41:16,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 06:41:16,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:16,583 INFO L225 Difference]: With dead ends: 125 [2021-08-27 06:41:16,583 INFO L226 Difference]: Without dead ends: 125 [2021-08-27 06:41:16,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-27 06:41:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-27 06:41:16,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-08-27 06:41:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-08-27 06:41:16,586 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-08-27 06:41:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:16,586 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-08-27 06:41:16,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-08-27 06:41:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:41:16,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:16,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:16,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 06:41:16,587 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:16,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:16,588 INFO L82 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-08-27 06:41:16,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:16,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147121332] [2021-08-27 06:41:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:16,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:16,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:16,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147121332] [2021-08-27 06:41:16,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147121332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:16,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:16,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 06:41:16,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621314437] [2021-08-27 06:41:16,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:41:16,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:16,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:41:16,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:41:16,687 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:16,980 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-08-27 06:41:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:41:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 06:41:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:16,981 INFO L225 Difference]: With dead ends: 125 [2021-08-27 06:41:16,981 INFO L226 Difference]: Without dead ends: 125 [2021-08-27 06:41:16,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-27 06:41:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-27 06:41:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-08-27 06:41:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 114 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-08-27 06:41:16,984 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-08-27 06:41:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:16,985 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-08-27 06:41:16,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-08-27 06:41:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:41:16,985 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:16,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:16,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 06:41:16,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-08-27 06:41:16,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:16,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063392093] [2021-08-27 06:41:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:16,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:41:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:17,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:41:17,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063392093] [2021-08-27 06:41:17,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063392093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:17,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:17,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 06:41:17,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93995204] [2021-08-27 06:41:17,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:41:17,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:41:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:41:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:41:17,059 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:17,312 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-08-27 06:41:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:41:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-27 06:41:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:17,314 INFO L225 Difference]: With dead ends: 181 [2021-08-27 06:41:17,314 INFO L226 Difference]: Without dead ends: 181 [2021-08-27 06:41:17,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:41:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-08-27 06:41:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-08-27 06:41:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 121 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-08-27 06:41:17,318 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-08-27 06:41:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:17,318 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-08-27 06:41:17,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-08-27 06:41:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:41:17,319 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:17,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:17,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 06:41:17,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:17,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-08-27 06:41:17,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:41:17,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649452005] [2021-08-27 06:41:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:17,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:41:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:41:17,335 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:41:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:41:17,370 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 06:41:17,370 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:41:17,373 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:17,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:41:17,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:41:17,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:41:17,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:41:17,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 06:41:17,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 06:41:17,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 06:41:17,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 06:41:17,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 06:41:17,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 06:41:17,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 06:41:17,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 06:41:17,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 06:41:17,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 06:41:17,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 06:41:17,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 06:41:17,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 06:41:17,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 06:41:17,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 06:41:17,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 06:41:17,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 06:41:17,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 06:41:17,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:17,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 06:41:17,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 06:41:17,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:17,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 06:41:17,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 06:41:17,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-08-27 06:41:17,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-08-27 06:41:17,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-08-27 06:41:17,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-08-27 06:41:17,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-08-27 06:41:17,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-08-27 06:41:17,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-08-27 06:41:17,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-08-27 06:41:17,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-08-27 06:41:17,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-08-27 06:41:17,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:17,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:17,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 06:41:17,396 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:41:17,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:41:17 BoogieIcfgContainer [2021-08-27 06:41:17,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:41:17,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:41:17,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:41:17,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:41:17,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:41:14" (3/4) ... [2021-08-27 06:41:17,420 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:41:17,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:41:17,422 INFO L168 Benchmark]: Toolchain (without parser) took 4663.64 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 34.4 MB in the beginning and 82.2 MB in the end (delta: -47.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:17,422 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:41:17,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.57 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 33.6 MB in the end (delta: 679.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:17,423 INFO L168 Benchmark]: Boogie Preprocessor took 70.66 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 30.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:17,423 INFO L168 Benchmark]: RCFGBuilder took 727.22 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 40.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:17,423 INFO L168 Benchmark]: TraceAbstraction took 3407.60 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 40.3 MB in the beginning and 83.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:17,424 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 121.6 MB. Free memory was 83.3 MB in the beginning and 82.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:41:17,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.57 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 33.6 MB in the end (delta: 679.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.66 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 30.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 727.22 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 40.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3407.60 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 40.3 MB in the beginning and 83.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.79 ms. Allocated memory is still 121.6 MB. Free memory was 83.3 MB in the beginning and 82.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: 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 4 procedures, 129 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 3340.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 17.0ms, AutomataDifference: 2089.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 550 SDtfs, 955 SDslu, 735 SDs, 0 SdLazy, 2016 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1315.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 364.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 84.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.3ms SsaConstructionTime, 147.2ms SatisfiabilityAnalysisTime, 685.7ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 [2021-08-27 06:41:17,470 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:41:19,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:41:19,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:41:19,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:41:19,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:41:19,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:41:19,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:41:19,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:41:19,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:41:19,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:41:19,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:41:19,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:41:19,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:41:19,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:41:19,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:41:19,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:41:19,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:41:19,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:41:19,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:41:19,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:41:19,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:41:19,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:41:19,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:41:19,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:41:19,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:41:19,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:41:19,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:41:19,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:41:19,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:41:19,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:41:19,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:41:19,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:41:19,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:41:19,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:41:19,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:41:19,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:41:19,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:41:19,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:41:19,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:41:19,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:41:19,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:41:19,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:41:19,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:41:19,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:41:19,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:41:19,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:41:19,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:41:19,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:41:19,477 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:41:19,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:41:19,477 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:41:19,477 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:41:19,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:41:19,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:41:19,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:41:19,478 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:41:19,478 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:41:19,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:41:19,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:41:19,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:41:19,479 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:41:19,479 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:41:19,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:41:19,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:41:19,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:41:19,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:41:19,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:41:19,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:41:19,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:41:19,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:41:19,481 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:41:19,482 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:41:19,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:41:19,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:41:19,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-08-27 06:41:19,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:41:19,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:41:19,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:41:19,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:41:19,791 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:41:19,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-27 06:41:19,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0798787/82245b11b66b41ecb4784cf633b8648d/FLAG0a88e031e [2021-08-27 06:41:20,336 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:41:20,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-27 06:41:20,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0798787/82245b11b66b41ecb4784cf633b8648d/FLAG0a88e031e [2021-08-27 06:41:20,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0798787/82245b11b66b41ecb4784cf633b8648d [2021-08-27 06:41:20,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:41:20,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:41:20,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:41:20,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:41:20,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:41:20,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:41:20" (1/1) ... [2021-08-27 06:41:20,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1a09a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:20, skipping insertion in model container [2021-08-27 06:41:20,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:41:20" (1/1) ... [2021-08-27 06:41:20,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:41:20,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:41:21,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-08-27 06:41:21,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-08-27 06:41:21,048 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-08-27 06:41:21,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:41:21,075 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:41:21,106 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-08-27 06:41:21,107 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-08-27 06:41:21,108 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-08-27 06:41:21,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:41:21,137 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:41:21,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21 WrapperNode [2021-08-27 06:41:21,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:41:21,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:41:21,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:41:21,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:41:21,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:41:21,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:41:21,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:41:21,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:41:21,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (1/1) ... [2021-08-27 06:41:21,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:41:21,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:41:21,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 06:41:21,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 06:41:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:41:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:41:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:41:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 06:41:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:41:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:41:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:41:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:41:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:41:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:41:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:41:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:41:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:41:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:41:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:41:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:41:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 06:41:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:41:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 06:41:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:41:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:41:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 06:41:21,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 06:41:22,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:41:22,104 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-27 06:41:22,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:41:22 BoogieIcfgContainer [2021-08-27 06:41:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:41:22,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:41:22,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:41:22,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:41:22,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:41:20" (1/3) ... [2021-08-27 06:41:22,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8322e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:41:22, skipping insertion in model container [2021-08-27 06:41:22,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:41:21" (2/3) ... [2021-08-27 06:41:22,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8322e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:41:22, skipping insertion in model container [2021-08-27 06:41:22,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:41:22" (3/3) ... [2021-08-27 06:41:22,121 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-08-27 06:41:22,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:41:22,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-08-27 06:41:22,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:41:22,173 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, mConcurrency=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 [2021-08-27 06:41:22,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-08-27 06:41:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:41:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:41:22,192 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:22,192 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:22,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-08-27 06:41:22,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:22,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10566465] [2021-08-27 06:41:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:22,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:22,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:22,214 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) [2021-08-27 06:41:22,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 06:41:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:22,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 06:41:22,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:22,464 INFO L388 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 [2021-08-27 06:41:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:22,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:22,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:22,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10566465] [2021-08-27 06:41:22,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10566465] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:22,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:22,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:41:22,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137941806] [2021-08-27 06:41:22,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:41:22,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:22,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:41:22,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:41:22,557 INFO L87 Difference]: Start difference. First operand has 124 states, 64 states have (on average 2.140625) internal successors, (137), 119 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:22,787 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-08-27 06:41:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:41:22,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:41:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:22,795 INFO L225 Difference]: With dead ends: 125 [2021-08-27 06:41:22,796 INFO L226 Difference]: Without dead ends: 121 [2021-08-27 06:41:22,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:41:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-27 06:41:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-08-27 06:41:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 113 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-08-27 06:41:22,838 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-08-27 06:41:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:22,839 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-08-27 06:41:22,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-08-27 06:41:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:41:22,840 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:22,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:22,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:23,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:23,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-08-27 06:41:23,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:23,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416701950] [2021-08-27 06:41:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:23,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:23,060 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) [2021-08-27 06:41:23,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 06:41:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:23,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:41:23,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:23,233 INFO L388 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 [2021-08-27 06:41:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:23,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:23,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:23,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416701950] [2021-08-27 06:41:23,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416701950] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:23,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:23,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-27 06:41:23,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915579543] [2021-08-27 06:41:23,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:41:23,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:41:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:23,321 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:23,613 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-08-27 06:41:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:41:23,614 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:41:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:23,615 INFO L225 Difference]: With dead ends: 135 [2021-08-27 06:41:23,615 INFO L226 Difference]: Without dead ends: 135 [2021-08-27 06:41:23,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-27 06:41:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-08-27 06:41:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.75) internal successors, (126), 118 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-08-27 06:41:23,623 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-08-27 06:41:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:23,624 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-08-27 06:41:23,624 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-08-27 06:41:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:41:23,624 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:23,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:23,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:23,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:23,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:23,826 INFO L82 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-08-27 06:41:23,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:23,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727655998] [2021-08-27 06:41:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:23,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:23,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:23,830 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) [2021-08-27 06:41:23,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 06:41:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:24,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:41:24,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:24,036 INFO L388 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 [2021-08-27 06:41:24,098 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:41:24,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 24 [2021-08-27 06:41:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:24,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:24,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:24,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727655998] [2021-08-27 06:41:24,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727655998] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:24,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:24,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 06:41:24,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826460740] [2021-08-27 06:41:24,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:41:24,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:24,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:41:24,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:24,230 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:24,570 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-08-27 06:41:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:41:24,573 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 06:41:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:24,574 INFO L225 Difference]: With dead ends: 129 [2021-08-27 06:41:24,574 INFO L226 Difference]: Without dead ends: 129 [2021-08-27 06:41:24,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:41:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-27 06:41:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-08-27 06:41:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.6133333333333333) internal successors, (121), 110 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-08-27 06:41:24,580 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-08-27 06:41:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:24,580 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-08-27 06:41:24,581 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-08-27 06:41:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:41:24,581 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:24,581 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:24,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:24,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:24,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:24,790 INFO L82 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-08-27 06:41:24,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:24,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120397538] [2021-08-27 06:41:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:24,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:24,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:24,797 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) [2021-08-27 06:41:24,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 06:41:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:24,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 06:41:24,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:24,989 INFO L388 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 [2021-08-27 06:41:24,994 INFO L388 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 [2021-08-27 06:41:25,136 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:41:25,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 32 [2021-08-27 06:41:25,148 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:41:25,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-08-27 06:41:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:25,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:27,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:27,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120397538] [2021-08-27 06:41:27,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120397538] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:27,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:27,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-27 06:41:27,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662002975] [2021-08-27 06:41:27,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:41:27,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:41:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-08-27 06:41:27,880 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:44,933 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-08-27 06:41:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 06:41:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 06:41:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:44,934 INFO L225 Difference]: With dead ends: 161 [2021-08-27 06:41:44,935 INFO L226 Difference]: Without dead ends: 161 [2021-08-27 06:41:44,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 17349.0ms TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-08-27 06:41:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-27 06:41:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2021-08-27 06:41:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 107 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-08-27 06:41:44,942 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 11 [2021-08-27 06:41:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:44,942 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-08-27 06:41:44,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-08-27 06:41:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 06:41:44,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:44,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:44,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:45,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:45,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-08-27 06:41:45,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:45,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464978650] [2021-08-27 06:41:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:45,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:45,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:45,157 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) [2021-08-27 06:41:45,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 06:41:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:45,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:41:45,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:45,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:45,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:45,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464978650] [2021-08-27 06:41:45,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464978650] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:45,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:45,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:41:45,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709748362] [2021-08-27 06:41:45,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:41:45,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:41:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:41:45,464 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:45,796 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2021-08-27 06:41:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:41:45,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 06:41:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:45,798 INFO L225 Difference]: With dead ends: 132 [2021-08-27 06:41:45,798 INFO L226 Difference]: Without dead ends: 132 [2021-08-27 06:41:45,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:41:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-27 06:41:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-08-27 06:41:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 105 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-08-27 06:41:45,804 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 13 [2021-08-27 06:41:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:45,805 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-08-27 06:41:45,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-08-27 06:41:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 06:41:45,805 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:45,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:45,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-27 06:41:46,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:46,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:46,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-08-27 06:41:46,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:46,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952613084] [2021-08-27 06:41:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:46,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:46,013 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) [2021-08-27 06:41:46,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 06:41:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:46,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:41:46,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:46,194 INFO L388 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 [2021-08-27 06:41:46,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-08-27 06:41:46,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-08-27 06:41:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:46,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:46,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:46,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952613084] [2021-08-27 06:41:46,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952613084] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:46,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:46,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:41:46,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906500881] [2021-08-27 06:41:46,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:41:46,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:41:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:41:46,421 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:47,088 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-08-27 06:41:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:41:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-27 06:41:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:47,094 INFO L225 Difference]: With dead ends: 112 [2021-08-27 06:41:47,094 INFO L226 Difference]: Without dead ends: 112 [2021-08-27 06:41:47,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:41:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-27 06:41:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-08-27 06:41:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 104 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-08-27 06:41:47,104 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 15 [2021-08-27 06:41:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:47,104 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-08-27 06:41:47,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-08-27 06:41:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 06:41:47,105 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:47,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:47,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:47,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:47,314 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:47,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-08-27 06:41:47,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:47,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907028498] [2021-08-27 06:41:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:47,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:47,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:47,316 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) [2021-08-27 06:41:47,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 06:41:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:47,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:41:47,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:47,529 INFO L388 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 [2021-08-27 06:41:47,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-08-27 06:41:47,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 06:41:47,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-08-27 06:41:47,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-08-27 06:41:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:48,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:48,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907028498] [2021-08-27 06:41:48,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907028498] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:48,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:48,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-27 06:41:48,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821838865] [2021-08-27 06:41:48,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:41:48,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:41:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:41:48,075 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:49,981 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2021-08-27 06:41:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:41:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-27 06:41:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:49,983 INFO L225 Difference]: With dead ends: 127 [2021-08-27 06:41:49,983 INFO L226 Difference]: Without dead ends: 127 [2021-08-27 06:41:49,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 674.0ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-08-27 06:41:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-27 06:41:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-08-27 06:41:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 101 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-08-27 06:41:49,987 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 15 [2021-08-27 06:41:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:49,988 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-08-27 06:41:49,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-08-27 06:41:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:41:49,988 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:49,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:50,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:50,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:50,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-08-27 06:41:50,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:50,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463388129] [2021-08-27 06:41:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:50,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:50,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:50,199 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) [2021-08-27 06:41:50,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:41:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:41:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:41:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:41:50,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 06:41:50,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-27 06:41:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:50,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:41:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:41:50,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:41:50,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463388129] [2021-08-27 06:41:50,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463388129] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:41:50,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:41:50,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:41:50,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539860194] [2021-08-27 06:41:50,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:41:50,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:41:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:41:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:41:50,567 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:41:51,093 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-08-27 06:41:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:41:51,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 06:41:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:41:51,095 INFO L225 Difference]: With dead ends: 166 [2021-08-27 06:41:51,095 INFO L226 Difference]: Without dead ends: 166 [2021-08-27 06:41:51,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:41:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-27 06:41:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 111. [2021-08-27 06:41:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2021-08-27 06:41:51,099 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 16 [2021-08-27 06:41:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:41:51,101 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2021-08-27 06:41:51,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:41:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2021-08-27 06:41:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:41:51,101 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:41:51,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:41:51,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-27 06:41:51,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:51,305 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-27 06:41:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:41:51,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-08-27 06:41:51,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:41:51,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210796335] [2021-08-27 06:41:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:41:51,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:41:51,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:41:51,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:41:51,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:41:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:41:51,487 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:41:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:41:51,539 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 06:41:51,539 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:41:51,540 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:51,541 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 06:41:51,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 06:41:51,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:51,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-08-27 06:41:51,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-08-27 06:41:51,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-08-27 06:41:51,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-08-27 06:41:51,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-08-27 06:41:51,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-08-27 06:41:51,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-08-27 06:41:51,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-08-27 06:41:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-08-27 06:41:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:41:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:41:51,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:41:51,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:41:51,758 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:41:51,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:41:51 BoogieIcfgContainer [2021-08-27 06:41:51,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:41:51,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:41:51,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:41:51,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:41:51,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:41:22" (3/4) ... [2021-08-27 06:41:51,784 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:41:51,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:41:51,785 INFO L168 Benchmark]: Toolchain (without parser) took 31074.81 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 34.6 MB in the beginning and 63.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:51,786 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:41:51,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.3 MB in the beginning and 46.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:51,786 INFO L168 Benchmark]: Boogie Preprocessor took 70.29 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 42.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:51,787 INFO L168 Benchmark]: RCFGBuilder took 900.38 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 48.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:51,787 INFO L168 Benchmark]: TraceAbstraction took 29669.46 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 48.3 MB in the beginning and 63.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:41:51,787 INFO L168 Benchmark]: Witness Printer took 3.62 ms. Allocated memory is still 100.7 MB. Free memory is still 63.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:41:51,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.3 MB in the beginning and 46.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.29 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 42.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 900.38 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 48.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29669.46 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 48.3 MB in the beginning and 63.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.62 ms. Allocated memory is still 100.7 MB. Free memory is still 63.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1049. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: 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 5 procedures, 133 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 29589.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 13.1ms, AutomataDifference: 21402.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 535 SDtfs, 957 SDslu, 902 SDs, 0 SdLazy, 1482 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4933.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 18375.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 186 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 82.3ms SsaConstructionTime, 211.5ms SatisfiabilityAnalysisTime, 4645.5ms InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 174 ConstructedInterpolants, 5 QuantifiedInterpolants, 873 SizeOfPredicates, 23 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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 [2021-08-27 06:41:51,825 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...