./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 5fbdf5bf 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-wip.dd.seqcomp-5fbdf5b [2021-08-30 18:10:32,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 18:10:32,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 18:10:32,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 18:10:32,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 18:10:32,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 18:10:32,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 18:10:32,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 18:10:32,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 18:10:32,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 18:10:32,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 18:10:32,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 18:10:32,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 18:10:32,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 18:10:32,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 18:10:32,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 18:10:32,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 18:10:32,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 18:10:32,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 18:10:32,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 18:10:32,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 18:10:32,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 18:10:32,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 18:10:32,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 18:10:32,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 18:10:32,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 18:10:32,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 18:10:32,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 18:10:32,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 18:10:32,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 18:10:32,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 18:10:32,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 18:10:32,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 18:10:32,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 18:10:32,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 18:10:32,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 18:10:32,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 18:10:32,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 18:10:32,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 18:10:32,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 18:10:32,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 18:10:32,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 18:10:32,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 18:10:32,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 18:10:32,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 18:10:32,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 18:10:32,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 18:10:32,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 18:10:32,308 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 18:10:32,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 18:10:32,309 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 18:10:32,309 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 18:10:32,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 18:10:32,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 18:10:32,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 18:10:32,310 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 18:10:32,310 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 18:10:32,311 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 18:10:32,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 18:10:32,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 18:10:32,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 18:10:32,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 18:10:32,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 18:10:32,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 18:10:32,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 18:10:32,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:10:32,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 18:10:32,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 18:10:32,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 18:10:32,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 18:10:32,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 18:10:32,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-08-30 18:10:32,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 18:10:32,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 18:10:32,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 18:10:32,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 18:10:32,626 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 18:10:32,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-30 18:10:32,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7eb4780a/db861b104b254be7abc847602ce68c91/FLAG0717647a7 [2021-08-30 18:10:33,232 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 18:10:33,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-30 18:10:33,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7eb4780a/db861b104b254be7abc847602ce68c91/FLAG0717647a7 [2021-08-30 18:10:33,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7eb4780a/db861b104b254be7abc847602ce68c91 [2021-08-30 18:10:33,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 18:10:33,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 18:10:33,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 18:10:33,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 18:10:33,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 18:10:33,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:10:33" (1/1) ... [2021-08-30 18:10:33,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e6be55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:33, skipping insertion in model container [2021-08-30 18:10:33,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:10:33" (1/1) ... [2021-08-30 18:10:33,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 18:10:33,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 18:10:33,927 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] [2021-08-30 18:10:33,930 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] [2021-08-30 18:10:33,931 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] [2021-08-30 18:10:33,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:10:33,941 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 18:10:33,967 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] [2021-08-30 18:10:33,968 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] [2021-08-30 18:10:33,969 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] [2021-08-30 18:10:33,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:10:34,000 INFO L208 MainTranslator]: Completed translation [2021-08-30 18:10:34,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34 WrapperNode [2021-08-30 18:10:34,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 18:10:34,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 18:10:34,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 18:10:34,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 18:10:34,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 18:10:34,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 18:10:34,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 18:10:34,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 18:10:34,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (1/1) ... [2021-08-30 18:10:34,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:10:34,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:10:34,104 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) [2021-08-30 18:10:34,117 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 [2021-08-30 18:10:34,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 18:10:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 18:10:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 18:10:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 18:10:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 18:10:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 18:10:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 18:10:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 18:10:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 18:10:34,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 18:10:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 18:10:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 18:10:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 18:10:34,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 18:10:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 18:10:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 18:10:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 18:10:34,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 18:10:34,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 18:10:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 18:10:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 18:10:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 18:10:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 18:10:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 18:10:34,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 18:10:34,161 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 18:10:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 18:10:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 18:10:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 18:10:34,162 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 18:10:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 18:10:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 18:10:34,163 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 18:10:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 18:10:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 18:10:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 18:10:34,164 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 18:10:34,165 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 18:10:34,166 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 18:10:34,166 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 18:10:34,166 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 18:10:34,166 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 18:10:34,167 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 18:10:34,168 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 18:10:34,169 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 18:10:34,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 18:10:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 18:10:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 18:10:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 18:10:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 18:10:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 18:10:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 18:10:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 18:10:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 18:10:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 18:10:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 18:10:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 18:10:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 18:10:34,174 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 18:10:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 18:10:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 18:10:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 18:10:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 18:10:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 18:10:34,175 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 18:10:34,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 18:10:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 18:10:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 18:10:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 18:10:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 18:10:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 18:10:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 18:10:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 18:10:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 18:10:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 18:10:34,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 18:10:34,570 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-30 18:10:34,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:10:34 BoogieIcfgContainer [2021-08-30 18:10:34,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 18:10:34,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 18:10:34,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 18:10:34,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 18:10:34,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:10:33" (1/3) ... [2021-08-30 18:10:34,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef8589d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:10:34, skipping insertion in model container [2021-08-30 18:10:34,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:34" (2/3) ... [2021-08-30 18:10:34,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef8589d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:10:34, skipping insertion in model container [2021-08-30 18:10:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:10:34" (3/3) ... [2021-08-30 18:10:34,589 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-08-30 18:10:34,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 18:10:34,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-08-30 18:10:34,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 18:10:34,632 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 [2021-08-30 18:10:34,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-08-30 18:10:34,647 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) [2021-08-30 18:10:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:10:34,652 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:34,653 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:34,653 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:34,657 INFO L82 PathProgramCache]: Analyzing trace with hash 384543771, now seen corresponding path program 1 times [2021-08-30 18:10:34,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:34,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235577138] [2021-08-30 18:10:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:34,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:34,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:34,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:34,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235577138] [2021-08-30 18:10:34,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235577138] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:34,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:34,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:10:34,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071572962] [2021-08-30 18:10:34,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:10:34,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:10:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:34,983 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) [2021-08-30 18:10:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:35,297 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-08-30 18:10:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:10:35,299 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 [2021-08-30 18:10:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:35,309 INFO L225 Difference]: With dead ends: 127 [2021-08-30 18:10:35,309 INFO L226 Difference]: Without dead ends: 123 [2021-08-30 18:10:35,311 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.97ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:35,316 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 102 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.69ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.26ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:35,318 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 8 Invalid, 276 Unknown, 0 Unchecked, 5.69ms Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 270.26ms Time] [2021-08-30 18:10:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-30 18:10:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-08-30 18:10:35,361 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) [2021-08-30 18:10:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2021-08-30 18:10:35,366 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 7 [2021-08-30 18:10:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:35,366 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2021-08-30 18:10:35,366 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) [2021-08-30 18:10:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2021-08-30 18:10:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:10:35,367 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:35,368 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:35,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 18:10:35,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 384543772, now seen corresponding path program 1 times [2021-08-30 18:10:35,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:35,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552186148] [2021-08-30 18:10:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:35,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:35,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:35,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552186148] [2021-08-30 18:10:35,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552186148] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:35,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:35,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:10:35,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873815854] [2021-08-30 18:10:35,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:10:35,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:10:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:35,498 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) [2021-08-30 18:10:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:35,721 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-08-30 18:10:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:10:35,722 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 [2021-08-30 18:10:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:35,723 INFO L225 Difference]: With dead ends: 137 [2021-08-30 18:10:35,723 INFO L226 Difference]: Without dead ends: 137 [2021-08-30 18:10:35,723 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.01ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:35,724 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 98 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.99ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:35,725 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 7 Invalid, 280 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 199.99ms Time] [2021-08-30 18:10:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-08-30 18:10:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-08-30 18:10:35,731 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) [2021-08-30 18:10:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-08-30 18:10:35,733 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 7 [2021-08-30 18:10:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:35,733 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-08-30 18:10:35,733 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) [2021-08-30 18:10:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-08-30 18:10:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 18:10:35,734 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:35,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:35,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 18:10:35,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash 849124794, now seen corresponding path program 1 times [2021-08-30 18:10:35,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:35,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325074078] [2021-08-30 18:10:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:35,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:35,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:35,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325074078] [2021-08-30 18:10:35,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325074078] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:35,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:35,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:10:35,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230655126] [2021-08-30 18:10:35,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:10:35,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:10:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:10:35,868 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) [2021-08-30 18:10:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:36,104 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2021-08-30 18:10:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:10:36,104 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 [2021-08-30 18:10:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:36,105 INFO L225 Difference]: With dead ends: 131 [2021-08-30 18:10:36,105 INFO L226 Difference]: Without dead ends: 131 [2021-08-30 18:10:36,106 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.15ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:10:36,106 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 161 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.53ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:36,107 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 10 Invalid, 312 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [26 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 209.53ms Time] [2021-08-30 18:10:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-30 18:10:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2021-08-30 18:10:36,112 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) [2021-08-30 18:10:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-08-30 18:10:36,113 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2021-08-30 18:10:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:36,113 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-08-30 18:10:36,114 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) [2021-08-30 18:10:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-08-30 18:10:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 18:10:36,114 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:36,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:36,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 18:10:36,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:36,115 INFO L82 PathProgramCache]: Analyzing trace with hash 849124795, now seen corresponding path program 1 times [2021-08-30 18:10:36,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:36,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983061655] [2021-08-30 18:10:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:36,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:36,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:36,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983061655] [2021-08-30 18:10:36,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983061655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:36,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:36,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:10:36,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286485838] [2021-08-30 18:10:36,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:10:36,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:36,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:10:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:10:36,232 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) [2021-08-30 18:10:36,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:36,507 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-08-30 18:10:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:10:36,507 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 [2021-08-30 18:10:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:36,508 INFO L225 Difference]: With dead ends: 155 [2021-08-30 18:10:36,508 INFO L226 Difference]: Without dead ends: 155 [2021-08-30 18:10:36,509 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 54.62ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:10:36,509 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 186 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.24ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:36,510 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 13 Invalid, 404 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [19 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 249.24ms Time] [2021-08-30 18:10:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-30 18:10:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2021-08-30 18:10:36,514 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) [2021-08-30 18:10:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-08-30 18:10:36,515 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 12 [2021-08-30 18:10:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:36,515 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-08-30 18:10:36,515 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) [2021-08-30 18:10:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-08-30 18:10:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 18:10:36,516 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:36,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:36,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 18:10:36,516 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash -34876986, now seen corresponding path program 1 times [2021-08-30 18:10:36,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:36,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051295629] [2021-08-30 18:10:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:36,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:36,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:36,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051295629] [2021-08-30 18:10:36,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051295629] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:36,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:36,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:10:36,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048384352] [2021-08-30 18:10:36,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:10:36,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:10:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:10:36,603 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) [2021-08-30 18:10:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:36,811 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-08-30 18:10:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:10:36,812 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 [2021-08-30 18:10:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:36,812 INFO L225 Difference]: With dead ends: 140 [2021-08-30 18:10:36,812 INFO L226 Difference]: Without dead ends: 140 [2021-08-30 18:10:36,813 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.33ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:10:36,814 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 121 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.84ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:36,814 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 10 Invalid, 341 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 193.84ms Time] [2021-08-30 18:10:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-30 18:10:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-08-30 18:10:36,819 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) [2021-08-30 18:10:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-08-30 18:10:36,820 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 14 [2021-08-30 18:10:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:36,820 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-08-30 18:10:36,820 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) [2021-08-30 18:10:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-08-30 18:10:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 18:10:36,821 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:36,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:36,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 18:10:36,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:36,821 INFO L82 PathProgramCache]: Analyzing trace with hash 860042492, now seen corresponding path program 1 times [2021-08-30 18:10:36,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:36,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542205867] [2021-08-30 18:10:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:36,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:36,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:36,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542205867] [2021-08-30 18:10:36,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542205867] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:36,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:36,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:10:36,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510713249] [2021-08-30 18:10:36,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:10:36,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:10:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:10:36,881 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) [2021-08-30 18:10:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:37,176 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-08-30 18:10:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 18:10:37,176 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 [2021-08-30 18:10:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:37,177 INFO L225 Difference]: With dead ends: 125 [2021-08-30 18:10:37,177 INFO L226 Difference]: Without dead ends: 125 [2021-08-30 18:10:37,177 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.65ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 18:10:37,178 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.48ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:37,178 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 594 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [10 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 258.48ms Time] [2021-08-30 18:10:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-30 18:10:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-08-30 18:10:37,183 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) [2021-08-30 18:10:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-08-30 18:10:37,184 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-08-30 18:10:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:37,184 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-08-30 18:10:37,184 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) [2021-08-30 18:10:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-08-30 18:10:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 18:10:37,185 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:37,185 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:37,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 18:10:37,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:37,186 INFO L82 PathProgramCache]: Analyzing trace with hash 860042493, now seen corresponding path program 1 times [2021-08-30 18:10:37,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:37,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736734904] [2021-08-30 18:10:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:37,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:37,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:37,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736734904] [2021-08-30 18:10:37,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736734904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:37,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:37,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 18:10:37,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530997651] [2021-08-30 18:10:37,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:10:37,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:10:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:10:37,297 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) [2021-08-30 18:10:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:37,640 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-08-30 18:10:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 18:10:37,640 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 [2021-08-30 18:10:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:37,641 INFO L225 Difference]: With dead ends: 125 [2021-08-30 18:10:37,641 INFO L226 Difference]: Without dead ends: 125 [2021-08-30 18:10:37,641 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 101.67ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-30 18:10:37,645 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.24ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:37,645 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 607 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [9 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 271.24ms Time] [2021-08-30 18:10:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-30 18:10:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-08-30 18:10:37,655 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) [2021-08-30 18:10:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-08-30 18:10:37,656 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 16 [2021-08-30 18:10:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:37,656 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-08-30 18:10:37,656 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) [2021-08-30 18:10:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-08-30 18:10:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 18:10:37,657 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:37,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:37,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 18:10:37,657 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:37,657 INFO L82 PathProgramCache]: Analyzing trace with hash 365787858, now seen corresponding path program 1 times [2021-08-30 18:10:37,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:37,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198906559] [2021-08-30 18:10:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:37,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:10:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:37,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:10:37,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198906559] [2021-08-30 18:10:37,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198906559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:37,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:37,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 18:10:37,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976299897] [2021-08-30 18:10:37,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:10:37,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:10:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:10:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:10:37,735 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) [2021-08-30 18:10:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:38,041 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-08-30 18:10:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:10:38,042 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 [2021-08-30 18:10:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:38,043 INFO L225 Difference]: With dead ends: 181 [2021-08-30 18:10:38,043 INFO L226 Difference]: Without dead ends: 181 [2021-08-30 18:10:38,043 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.69ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 18:10:38,043 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 220 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 268.22ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:38,044 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 13 Invalid, 499 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [17 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 268.22ms Time] [2021-08-30 18:10:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-08-30 18:10:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 125. [2021-08-30 18:10:38,047 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) [2021-08-30 18:10:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-08-30 18:10:38,048 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 17 [2021-08-30 18:10:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:38,048 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-08-30 18:10:38,048 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) [2021-08-30 18:10:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-08-30 18:10:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 18:10:38,049 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:38,049 INFO L513 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] [2021-08-30 18:10:38,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 18:10:38,049 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:38,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1043040677, now seen corresponding path program 1 times [2021-08-30 18:10:38,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:10:38,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11784437] [2021-08-30 18:10:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:38,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:10:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:10:38,061 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 18:10:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:10:38,094 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 18:10:38,094 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 18:10:38,095 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2021-08-30 18:10:38,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (53 of 55 remaining) [2021-08-30 18:10:38,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (52 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (51 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (50 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (49 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (48 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (47 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (46 of 55 remaining) [2021-08-30 18:10:38,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (45 of 55 remaining) [2021-08-30 18:10:38,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (44 of 55 remaining) [2021-08-30 18:10:38,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (43 of 55 remaining) [2021-08-30 18:10:38,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (42 of 55 remaining) [2021-08-30 18:10:38,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (41 of 55 remaining) [2021-08-30 18:10:38,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (40 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (39 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (38 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (37 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (36 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (35 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (34 of 55 remaining) [2021-08-30 18:10:38,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (33 of 55 remaining) [2021-08-30 18:10:38,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (32 of 55 remaining) [2021-08-30 18:10:38,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2021-08-30 18:10:38,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (30 of 55 remaining) [2021-08-30 18:10:38,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (29 of 55 remaining) [2021-08-30 18:10:38,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK (28 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION (27 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (26 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (25 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (24 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (23 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION (22 of 55 remaining) [2021-08-30 18:10:38,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION (21 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (20 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION (19 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (18 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (17 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (16 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION (15 of 55 remaining) [2021-08-30 18:10:38,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION (14 of 55 remaining) [2021-08-30 18:10:38,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE (13 of 55 remaining) [2021-08-30 18:10:38,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE (12 of 55 remaining) [2021-08-30 18:10:38,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE (11 of 55 remaining) [2021-08-30 18:10:38,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION (10 of 55 remaining) [2021-08-30 18:10:38,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION (9 of 55 remaining) [2021-08-30 18:10:38,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE (8 of 55 remaining) [2021-08-30 18:10:38,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE (7 of 55 remaining) [2021-08-30 18:10:38,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE (6 of 55 remaining) [2021-08-30 18:10:38,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION (5 of 55 remaining) [2021-08-30 18:10:38,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION (4 of 55 remaining) [2021-08-30 18:10:38,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE (3 of 55 remaining) [2021-08-30 18:10:38,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE (2 of 55 remaining) [2021-08-30 18:10:38,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE (1 of 55 remaining) [2021-08-30 18:10:38,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2021-08-30 18:10:38,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 18:10:38,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 18:10:38,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:10:38 BoogieIcfgContainer [2021-08-30 18:10:38,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 18:10:38,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 18:10:38,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 18:10:38,147 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 18:10:38,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:10:34" (3/4) ... [2021-08-30 18:10:38,150 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 18:10:38,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 18:10:38,151 INFO L158 Benchmark]: Toolchain (without parser) took 4563.96ms. Allocated memory was 50.3MB in the beginning and 98.6MB in the end (delta: 48.2MB). Free memory was 24.5MB in the beginning and 55.1MB in the end (delta: -30.6MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-08-30 18:10:38,151 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:10:38,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.03ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 24.3MB in the beginning and 34.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-08-30 18:10:38,152 INFO L158 Benchmark]: Boogie Preprocessor took 76.19ms. Allocated memory is still 67.1MB. Free memory was 34.9MB in the beginning and 49.4MB in the end (delta: -14.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 18:10:38,152 INFO L158 Benchmark]: RCFGBuilder took 494.07ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 45.0MB in the end (delta: 4.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2021-08-30 18:10:38,152 INFO L158 Benchmark]: TraceAbstraction took 3572.13ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 44.7MB in the beginning and 55.1MB in the end (delta: -10.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-08-30 18:10:38,153 INFO L158 Benchmark]: Witness Printer took 3.19ms. Allocated memory is still 98.6MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:10:38,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.03ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 24.3MB in the beginning and 34.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.19ms. Allocated memory is still 67.1MB. Free memory was 34.9MB in the beginning and 49.4MB in the end (delta: -14.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 494.07ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 45.0MB in the end (delta: 4.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3572.13ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 44.7MB in the beginning and 55.1MB in the end (delta: -10.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 3.19ms. Allocated memory is still 98.6MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 3490.76ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 12.96ms, AutomataDifference: 2291.66ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 11.46ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 955 SdHoareTripleChecker+Valid, 1920.80ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 955 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 1527.13ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 735 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3208 IncrementalHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 25 mSDtfsCounter, 3208 mSolverCounterSat, 28.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 379.08ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 76.56ms AutomataMinimizationTime, 8 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.19ms SsaConstructionTime, 134.08ms SatisfiabilityAnalysisTime, 680.34ms 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 [2021-08-30 18:10:38,210 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-wip.dd.seqcomp-5fbdf5b [2021-08-30 18:10:40,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 18:10:40,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 18:10:40,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 18:10:40,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 18:10:40,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 18:10:40,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 18:10:40,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 18:10:40,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 18:10:40,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 18:10:40,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 18:10:40,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 18:10:40,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 18:10:40,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 18:10:40,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 18:10:40,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 18:10:40,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 18:10:40,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 18:10:40,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 18:10:40,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 18:10:40,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 18:10:40,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 18:10:40,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 18:10:40,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 18:10:40,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 18:10:40,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 18:10:40,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 18:10:40,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 18:10:40,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 18:10:40,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 18:10:40,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 18:10:40,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 18:10:40,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 18:10:40,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 18:10:40,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 18:10:40,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 18:10:40,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 18:10:40,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 18:10:40,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 18:10:40,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 18:10:40,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 18:10:40,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 18:10:40,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 18:10:40,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 18:10:40,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 18:10:40,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 18:10:40,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 18:10:40,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 18:10:40,154 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 18:10:40,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 18:10:40,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 18:10:40,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 18:10:40,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 18:10:40,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 18:10:40,156 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 18:10:40,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 18:10:40,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 18:10:40,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 18:10:40,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 18:10:40,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 18:10:40,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 18:10:40,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:10:40,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 18:10:40,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 18:10:40,158 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 18:10:40,158 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 18:10:40,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 18:10:40,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 18:10:40,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2021-08-30 18:10:40,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 18:10:40,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 18:10:40,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 18:10:40,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 18:10:40,487 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 18:10:40,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-30 18:10:40,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f4be9c1/e0654c3db5f94016bb301150454c62ec/FLAGd34ae137c [2021-08-30 18:10:41,037 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 18:10:41,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-08-30 18:10:41,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f4be9c1/e0654c3db5f94016bb301150454c62ec/FLAGd34ae137c [2021-08-30 18:10:41,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f4be9c1/e0654c3db5f94016bb301150454c62ec [2021-08-30 18:10:41,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 18:10:41,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 18:10:41,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 18:10:41,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 18:10:41,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 18:10:41,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:10:41" (1/1) ... [2021-08-30 18:10:41,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e884943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:41, skipping insertion in model container [2021-08-30 18:10:41,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:10:41" (1/1) ... [2021-08-30 18:10:41,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 18:10:41,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 18:10:41,891 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] [2021-08-30 18:10:41,896 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] [2021-08-30 18:10:41,898 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] [2021-08-30 18:10:41,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:10:41,923 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 18:10:41,970 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] [2021-08-30 18:10:41,973 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] [2021-08-30 18:10:41,976 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] [2021-08-30 18:10:41,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:10:42,016 INFO L208 MainTranslator]: Completed translation [2021-08-30 18:10:42,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42 WrapperNode [2021-08-30 18:10:42,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 18:10:42,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 18:10:42,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 18:10:42,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 18:10:42,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 18:10:42,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 18:10:42,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 18:10:42,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 18:10:42,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (1/1) ... [2021-08-30 18:10:42,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:10:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:10:42,158 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) [2021-08-30 18:10:42,184 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 [2021-08-30 18:10:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 18:10:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 18:10:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 18:10:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 18:10:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 18:10:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 18:10:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 18:10:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 18:10:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 18:10:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 18:10:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 18:10:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 18:10:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 18:10:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 18:10:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 18:10:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 18:10:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 18:10:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 18:10:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 18:10:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 18:10:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 18:10:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 18:10:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 18:10:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 18:10:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 18:10:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 18:10:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 18:10:42,207 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 18:10:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 18:10:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 18:10:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 18:10:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 18:10:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 18:10:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 18:10:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 18:10:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 18:10:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 18:10:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 18:10:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 18:10:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 18:10:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 18:10:42,212 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 18:10:42,212 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 18:10:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 18:10:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 18:10:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 18:10:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 18:10:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 18:10:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 18:10:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 18:10:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 18:10:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 18:10:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 18:10:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 18:10:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 18:10:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 18:10:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 18:10:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 18:10:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 18:10:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 18:10:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 18:10:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 18:10:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 18:10:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 18:10:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 18:10:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 18:10:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 18:10:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 18:10:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 18:10:42,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 18:10:42,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 18:10:42,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 18:10:42,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 18:10:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 18:10:42,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 18:10:42,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 18:10:42,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 18:10:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 18:10:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 18:10:42,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 18:10:42,677 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-30 18:10:42,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:10:42 BoogieIcfgContainer [2021-08-30 18:10:42,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 18:10:42,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 18:10:42,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 18:10:42,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 18:10:42,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:10:41" (1/3) ... [2021-08-30 18:10:42,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129f0603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:10:42, skipping insertion in model container [2021-08-30 18:10:42,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:10:42" (2/3) ... [2021-08-30 18:10:42,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129f0603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:10:42, skipping insertion in model container [2021-08-30 18:10:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:10:42" (3/3) ... [2021-08-30 18:10:42,688 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-08-30 18:10:42,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 18:10:42,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-08-30 18:10:42,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 18:10:42,737 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 [2021-08-30 18:10:42,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-08-30 18:10:42,756 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) [2021-08-30 18:10:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:10:42,780 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:42,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:42,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:42,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522735, now seen corresponding path program 1 times [2021-08-30 18:10:42,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:42,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406765004] [2021-08-30 18:10:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:42,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:42,806 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) [2021-08-30 18:10:42,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 18:10:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:42,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 18:10:42,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:43,109 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 [2021-08-30 18:10:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:43,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:43,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:43,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406765004] [2021-08-30 18:10:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406765004] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:43,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:43,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 18:10:43,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134448394] [2021-08-30 18:10:43,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 18:10:43,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:43,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 18:10:43,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 18:10:43,199 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) [2021-08-30 18:10:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:43,562 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-08-30 18:10:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 18:10:43,565 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 [2021-08-30 18:10:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:43,571 INFO L225 Difference]: With dead ends: 125 [2021-08-30 18:10:43,571 INFO L226 Difference]: Without dead ends: 121 [2021-08-30 18:10:43,573 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 18:10:43,575 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 100 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.41ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:43,576 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 7 Invalid, 151 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 331.41ms Time] [2021-08-30 18:10:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-30 18:10:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-08-30 18:10:43,607 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) [2021-08-30 18:10:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-08-30 18:10:43,612 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 7 [2021-08-30 18:10:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:43,613 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-08-30 18:10:43,613 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) [2021-08-30 18:10:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-08-30 18:10:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:10:43,614 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:43,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:43,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:43,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:43,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1605522736, now seen corresponding path program 1 times [2021-08-30 18:10:43,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:43,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391909461] [2021-08-30 18:10:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:43,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:43,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:43,827 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) [2021-08-30 18:10:43,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 18:10:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:43,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 18:10:43,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:43,954 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 [2021-08-30 18:10:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:43,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:44,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:44,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391909461] [2021-08-30 18:10:44,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391909461] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:44,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:44,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 18:10:44,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946552556] [2021-08-30 18:10:44,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:10:44,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:10:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:44,016 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) [2021-08-30 18:10:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:44,474 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-08-30 18:10:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:10:44,476 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 [2021-08-30 18:10:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:44,478 INFO L225 Difference]: With dead ends: 135 [2021-08-30 18:10:44,478 INFO L226 Difference]: Without dead ends: 135 [2021-08-30 18:10:44,478 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.84ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:44,479 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 206 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 438.75ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:44,480 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 6 Invalid, 164 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [12 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 438.75ms Time] [2021-08-30 18:10:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-30 18:10:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-08-30 18:10:44,488 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) [2021-08-30 18:10:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-08-30 18:10:44,489 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-08-30 18:10:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:44,490 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-08-30 18:10:44,490 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) [2021-08-30 18:10:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-08-30 18:10:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 18:10:44,490 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:44,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:44,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:44,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:44,703 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash -417821773, now seen corresponding path program 1 times [2021-08-30 18:10:44,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:44,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270266258] [2021-08-30 18:10:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:44,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:44,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:44,708 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) [2021-08-30 18:10:44,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 18:10:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:44,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 18:10:44,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:44,842 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 [2021-08-30 18:10:44,902 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 18:10:44,903 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 [2021-08-30 18:10:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:44,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:44,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:44,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270266258] [2021-08-30 18:10:44,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270266258] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:44,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:44,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 18:10:44,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75602314] [2021-08-30 18:10:44,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:10:44,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:10:45,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:45,000 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) [2021-08-30 18:10:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:45,319 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-08-30 18:10:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:10:45,320 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 [2021-08-30 18:10:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:45,321 INFO L225 Difference]: With dead ends: 129 [2021-08-30 18:10:45,321 INFO L226 Difference]: Without dead ends: 129 [2021-08-30 18:10:45,321 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:10:45,322 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 158 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 298.54ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:45,323 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 9 Invalid, 202 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [24 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 298.54ms Time] [2021-08-30 18:10:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-30 18:10:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-08-30 18:10:45,329 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) [2021-08-30 18:10:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-08-30 18:10:45,330 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 11 [2021-08-30 18:10:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:45,330 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-08-30 18:10:45,330 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) [2021-08-30 18:10:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-08-30 18:10:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 18:10:45,331 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:45,331 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:45,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:45,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:45,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash -417821772, now seen corresponding path program 1 times [2021-08-30 18:10:45,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:45,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808290808] [2021-08-30 18:10:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:45,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:45,548 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) [2021-08-30 18:10:45,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 18:10:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:45,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 18:10:45,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:45,709 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 [2021-08-30 18:10:45,714 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 [2021-08-30 18:10:45,825 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 18:10:45,825 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 [2021-08-30 18:10:45,837 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 18:10:45,837 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 [2021-08-30 18:10:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:45,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:48,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:48,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808290808] [2021-08-30 18:10:48,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808290808] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:48,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:48,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 18:10:48,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572308304] [2021-08-30 18:10:48,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:10:48,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:10:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-08-30 18:10:48,399 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) [2021-08-30 18:10:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:49,513 INFO L93 Difference]: Finished difference Result 200 states and 219 transitions. [2021-08-30 18:10:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 18:10:49,514 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 [2021-08-30 18:10:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:49,515 INFO L225 Difference]: With dead ends: 200 [2021-08-30 18:10:49,515 INFO L226 Difference]: Without dead ends: 200 [2021-08-30 18:10:49,516 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2410.47ms TimeCoverageRelationStatistics Valid=41, Invalid=68, Unknown=1, NotChecked=0, Total=110 [2021-08-30 18:10:49,516 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 147 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 861.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 995.98ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:49,517 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 18 Invalid, 703 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [24 Valid, 418 Invalid, 0 Unknown, 261 Unchecked, 995.98ms Time] [2021-08-30 18:10:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-08-30 18:10:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 125. [2021-08-30 18:10:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.5568181818181819) internal successors, (137), 121 states have internal predecessors, (137), 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) [2021-08-30 18:10:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2021-08-30 18:10:49,524 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 11 [2021-08-30 18:10:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:49,529 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2021-08-30 18:10:49,529 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) [2021-08-30 18:10:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2021-08-30 18:10:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 18:10:49,530 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:49,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:49,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:49,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:49,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2094783426, now seen corresponding path program 1 times [2021-08-30 18:10:49,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:49,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253591502] [2021-08-30 18:10:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:49,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:49,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:49,742 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) [2021-08-30 18:10:49,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 18:10:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:49,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 18:10:49,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:49,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:49,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:49,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253591502] [2021-08-30 18:10:49,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253591502] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:49,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:49,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 18:10:49,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56444609] [2021-08-30 18:10:49,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:10:49,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:49,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:10:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:10:49,919 INFO L87 Difference]: Start difference. First operand 125 states and 140 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) [2021-08-30 18:10:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:50,353 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2021-08-30 18:10:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:10:50,353 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 [2021-08-30 18:10:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:50,354 INFO L225 Difference]: With dead ends: 150 [2021-08-30 18:10:50,354 INFO L226 Difference]: Without dead ends: 150 [2021-08-30 18:10:50,354 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:10:50,355 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 124 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 359.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 413.48ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:50,355 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 9 Invalid, 233 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 413.48ms Time] [2021-08-30 18:10:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-08-30 18:10:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2021-08-30 18:10:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 119 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) [2021-08-30 18:10:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-08-30 18:10:50,363 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 13 [2021-08-30 18:10:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:50,363 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-08-30 18:10:50,364 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) [2021-08-30 18:10:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-08-30 18:10:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 18:10:50,364 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:50,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:50,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:50,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:50,575 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2094764651, now seen corresponding path program 1 times [2021-08-30 18:10:50,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:50,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198779357] [2021-08-30 18:10:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:50,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:50,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:50,577 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) [2021-08-30 18:10:50,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 18:10:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:50,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 18:10:50,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:50,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:50,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 18:10:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:50,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198779357] [2021-08-30 18:10:50,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198779357] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:50,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 18:10:50,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743510596] [2021-08-30 18:10:50,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:10:50,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:10:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:10:50,899 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2021-08-30 18:10:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:51,545 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2021-08-30 18:10:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 18:10:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 13 [2021-08-30 18:10:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:51,546 INFO L225 Difference]: With dead ends: 150 [2021-08-30 18:10:51,546 INFO L226 Difference]: Without dead ends: 150 [2021-08-30 18:10:51,547 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 167.61ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-08-30 18:10:51,548 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 303 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 501.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 561.38ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:51,548 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 12 Invalid, 318 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [35 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 561.38ms Time] [2021-08-30 18:10:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-08-30 18:10:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2021-08-30 18:10:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 118 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) [2021-08-30 18:10:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2021-08-30 18:10:51,555 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 13 [2021-08-30 18:10:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:51,555 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2021-08-30 18:10:51,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2021-08-30 18:10:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2021-08-30 18:10:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:10:51,556 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:51,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:51,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:51,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:51,765 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:51,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832053, now seen corresponding path program 1 times [2021-08-30 18:10:51,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:51,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029512429] [2021-08-30 18:10:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:51,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:51,767 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) [2021-08-30 18:10:51,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 18:10:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:51,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 18:10:51,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:51,864 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 [2021-08-30 18:10:51,878 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 [2021-08-30 18:10:51,906 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 [2021-08-30 18:10:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:51,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:51,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:51,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029512429] [2021-08-30 18:10:51,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029512429] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:51,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:51,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 18:10:51,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160595440] [2021-08-30 18:10:51,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:10:51,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:10:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:10:51,988 INFO L87 Difference]: Start difference. First operand 122 states and 133 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) [2021-08-30 18:10:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:52,632 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-08-30 18:10:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:10:52,632 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 [2021-08-30 18:10:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:52,633 INFO L225 Difference]: With dead ends: 123 [2021-08-30 18:10:52,633 INFO L226 Difference]: Without dead ends: 123 [2021-08-30 18:10:52,634 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 70.99ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 18:10:52,634 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 518.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 596.34ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:52,634 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 15 Invalid, 470 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [9 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 596.34ms Time] [2021-08-30 18:10:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-30 18:10:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-08-30 18:10:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 117 states have internal predecessors, (129), 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) [2021-08-30 18:10:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2021-08-30 18:10:52,640 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 15 [2021-08-30 18:10:52,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:52,640 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2021-08-30 18:10:52,640 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) [2021-08-30 18:10:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2021-08-30 18:10:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:10:52,641 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:52,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:52,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:52,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:52,849 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:52,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1270832054, now seen corresponding path program 1 times [2021-08-30 18:10:52,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:52,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947898231] [2021-08-30 18:10:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:52,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:52,853 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) [2021-08-30 18:10:52,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 18:10:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:52,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 18:10:52,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:52,970 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 [2021-08-30 18:10:53,002 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 [2021-08-30 18:10:53,009 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 [2021-08-30 18:10:53,040 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 [2021-08-30 18:10:53,045 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 [2021-08-30 18:10:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:53,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:53,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:53,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947898231] [2021-08-30 18:10:53,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947898231] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:53,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:53,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-30 18:10:53,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620858956] [2021-08-30 18:10:53,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 18:10:53,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 18:10:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 18:10:53,337 INFO L87 Difference]: Start difference. First operand 121 states and 132 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) [2021-08-30 18:10:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:55,082 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2021-08-30 18:10:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 18:10:55,083 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 [2021-08-30 18:10:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:55,083 INFO L225 Difference]: With dead ends: 137 [2021-08-30 18:10:55,083 INFO L226 Difference]: Without dead ends: 137 [2021-08-30 18:10:55,084 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 389.74ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-08-30 18:10:55,084 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 56 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1377.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1528.10ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:55,084 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 18 Invalid, 681 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [14 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1528.10ms Time] [2021-08-30 18:10:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-08-30 18:10:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 118. [2021-08-30 18:10:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 114 states have internal predecessors, (127), 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) [2021-08-30 18:10:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2021-08-30 18:10:55,090 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 15 [2021-08-30 18:10:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:55,090 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2021-08-30 18:10:55,090 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) [2021-08-30 18:10:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2021-08-30 18:10:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 18:10:55,091 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:55,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:10:55,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:55,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:55,300 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr25ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:55,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:55,300 INFO L82 PathProgramCache]: Analyzing trace with hash 185778926, now seen corresponding path program 1 times [2021-08-30 18:10:55,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:55,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485749278] [2021-08-30 18:10:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:55,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:55,302 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) [2021-08-30 18:10:55,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 18:10:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:10:55,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 18:10:55,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:10:55,392 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 [2021-08-30 18:10:55,437 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 [2021-08-30 18:10:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:55,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:10:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:10:55,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:10:55,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485749278] [2021-08-30 18:10:55,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485749278] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:10:55,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:10:55,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 18:10:55,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819196815] [2021-08-30 18:10:55,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:10:55,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:10:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:10:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:10:55,491 INFO L87 Difference]: Start difference. First operand 118 states and 130 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) [2021-08-30 18:10:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:10:56,044 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2021-08-30 18:10:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:10:56,045 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 [2021-08-30 18:10:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:10:56,046 INFO L225 Difference]: With dead ends: 170 [2021-08-30 18:10:56,046 INFO L226 Difference]: Without dead ends: 170 [2021-08-30 18:10:56,046 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.28ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:10:56,046 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 449.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 519.18ms IncrementalHoareTripleChecker+Time [2021-08-30 18:10:56,047 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 12 Invalid, 373 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [8 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 519.18ms Time] [2021-08-30 18:10:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-08-30 18:10:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 118. [2021-08-30 18:10:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 114 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) [2021-08-30 18:10:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-08-30 18:10:56,052 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 16 [2021-08-30 18:10:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:10:56,052 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-08-30 18:10:56,053 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) [2021-08-30 18:10:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-08-30 18:10:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 18:10:56,053 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:10:56,054 INFO L513 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] [2021-08-30 18:10:56,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-30 18:10:56,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:56,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 50 more)] === [2021-08-30 18:10:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:10:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1669963529, now seen corresponding path program 1 times [2021-08-30 18:10:56,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:10:56,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120296974] [2021-08-30 18:10:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:10:56,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:10:56,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:10:56,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:10:56,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 18:10:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:10:56,353 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 18:10:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:10:56,398 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 18:10:56,398 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 18:10:56,399 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2021-08-30 18:10:56,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (53 of 55 remaining) [2021-08-30 18:10:56,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (52 of 55 remaining) [2021-08-30 18:10:56,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (51 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (50 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (49 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (48 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (47 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (46 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (45 of 55 remaining) [2021-08-30 18:10:56,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (44 of 55 remaining) [2021-08-30 18:10:56,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (43 of 55 remaining) [2021-08-30 18:10:56,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (42 of 55 remaining) [2021-08-30 18:10:56,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (41 of 55 remaining) [2021-08-30 18:10:56,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (40 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (39 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (38 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (37 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (36 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (35 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (34 of 55 remaining) [2021-08-30 18:10:56,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (33 of 55 remaining) [2021-08-30 18:10:56,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (32 of 55 remaining) [2021-08-30 18:10:56,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_LEAK (31 of 55 remaining) [2021-08-30 18:10:56,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (30 of 55 remaining) [2021-08-30 18:10:56,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (29 of 55 remaining) [2021-08-30 18:10:56,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_LEAK (28 of 55 remaining) [2021-08-30 18:10:56,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION (27 of 55 remaining) [2021-08-30 18:10:56,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (26 of 55 remaining) [2021-08-30 18:10:56,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (25 of 55 remaining) [2021-08-30 18:10:56,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (24 of 55 remaining) [2021-08-30 18:10:56,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (23 of 55 remaining) [2021-08-30 18:10:56,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION (22 of 55 remaining) [2021-08-30 18:10:56,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION (21 of 55 remaining) [2021-08-30 18:10:56,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (20 of 55 remaining) [2021-08-30 18:10:56,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION (19 of 55 remaining) [2021-08-30 18:10:56,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (18 of 55 remaining) [2021-08-30 18:10:56,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (17 of 55 remaining) [2021-08-30 18:10:56,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (16 of 55 remaining) [2021-08-30 18:10:56,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION (15 of 55 remaining) [2021-08-30 18:10:56,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION (14 of 55 remaining) [2021-08-30 18:10:56,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE (13 of 55 remaining) [2021-08-30 18:10:56,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE (12 of 55 remaining) [2021-08-30 18:10:56,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE (11 of 55 remaining) [2021-08-30 18:10:56,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION (10 of 55 remaining) [2021-08-30 18:10:56,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION (9 of 55 remaining) [2021-08-30 18:10:56,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46ASSERT_VIOLATIONMEMORY_FREE (8 of 55 remaining) [2021-08-30 18:10:56,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47ASSERT_VIOLATIONMEMORY_FREE (7 of 55 remaining) [2021-08-30 18:10:56,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_FREE (6 of 55 remaining) [2021-08-30 18:10:56,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION (5 of 55 remaining) [2021-08-30 18:10:56,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION (4 of 55 remaining) [2021-08-30 18:10:56,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE (3 of 55 remaining) [2021-08-30 18:10:56,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE (2 of 55 remaining) [2021-08-30 18:10:56,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE (1 of 55 remaining) [2021-08-30 18:10:56,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ENSURES_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2021-08-30 18:10:56,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 18:10:56,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:10:56,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 18:10:56,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:10:56 BoogieIcfgContainer [2021-08-30 18:10:56,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 18:10:56,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 18:10:56,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 18:10:56,648 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 18:10:56,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:10:42" (3/4) ... [2021-08-30 18:10:56,651 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 18:10:56,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 18:10:56,651 INFO L158 Benchmark]: Toolchain (without parser) took 15084.27ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.9MB in the beginning and 33.5MB in the end (delta: 4.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-08-30 18:10:56,652 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:10:56,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.03ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 37.1MB in the end (delta: 481.2kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 18:10:56,654 INFO L158 Benchmark]: Boogie Preprocessor took 105.57ms. Allocated memory is still 60.8MB. Free memory was 36.9MB in the beginning and 33.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 18:10:56,654 INFO L158 Benchmark]: RCFGBuilder took 554.26ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.8MB in the beginning and 40.5MB in the end (delta: -6.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-08-30 18:10:56,655 INFO L158 Benchmark]: TraceAbstraction took 13965.75ms. Allocated memory is still 73.4MB. Free memory was 40.2MB in the beginning and 33.8MB in the end (delta: 6.3MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-08-30 18:10:56,656 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 33.5MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:10:56,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.03ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 37.1MB in the end (delta: 481.2kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.57ms. Allocated memory is still 60.8MB. Free memory was 36.9MB in the beginning and 33.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 554.26ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.8MB in the beginning and 40.5MB in the end (delta: -6.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13965.75ms. Allocated memory is still 73.4MB. Free memory was 40.2MB in the beginning and 33.8MB in the end (delta: 6.3MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 33.5MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 13895.76ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 33.58ms, AutomataDifference: 6352.01ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.23ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1217 SdHoareTripleChecker+Valid, 5683.17ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1217 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 4920.63ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 261 IncrementalHoareTripleChecker+Unchecked, 994 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2895 IncrementalHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 28 mSDtfsCounter, 2895 mSolverCounterSat, 27.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3154.18ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=4, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 74.50ms AutomataMinimizationTime, 9 MinimizatonAttempts, 235 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 73.13ms SsaConstructionTime, 221.32ms SatisfiabilityAnalysisTime, 4142.54ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 198 ConstructedInterpolants, 5 QuantifiedInterpolants, 971 SizeOfPredicates, 26 NumberOfNonLiveVariables, 716 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 [2021-08-30 18:10:56,714 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...