./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_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/list-ext-properties/list-ext_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 d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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/list-ext-properties/list-ext_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 d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:29:02,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:29:02,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:29:02,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:29:02,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:29:02,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:29:02,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:29:02,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:29:02,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:29:02,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:29:02,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:29:02,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:29:02,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:29:02,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:29:02,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:29:02,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:29:02,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:29:02,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:29:02,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:29:02,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:29:02,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:29:02,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:29:02,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:29:02,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:29:02,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:29:02,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:29:02,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:29:02,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:29:02,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:29:02,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:29:02,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:29:02,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:29:02,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:29:02,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:29:02,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:29:02,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:29:02,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:29:02,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:29:02,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:29:02,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:29:02,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:29:02,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:29:02,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:29:02,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:29:02,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:29:02,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:29:02,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:29:02,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:29:02,375 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:29:02,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:29:02,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:29:02,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:29:02,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:29:02,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:29:02,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:29:02,377 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:29:02,377 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:29:02,377 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:29:02,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:29:02,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:29:02,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:29:02,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:29:02,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:29:02,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:29:02,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:29:02,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:29:02,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:29:02,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:29:02,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:29:02,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:29:02,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:29:02,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2021-08-30 17:29:02,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:29:02,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:29:02,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:29:02,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:29:02,650 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:29:02,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-08-30 17:29:02,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5cd0dee/bdb1a02fdbe54ced9731025f3ed3e7e5/FLAGf2d6259ba [2021-08-30 17:29:03,154 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:29:03,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-08-30 17:29:03,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5cd0dee/bdb1a02fdbe54ced9731025f3ed3e7e5/FLAGf2d6259ba [2021-08-30 17:29:03,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5cd0dee/bdb1a02fdbe54ced9731025f3ed3e7e5 [2021-08-30 17:29:03,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:29:03,682 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:29:03,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:29:03,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:29:03,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:29:03,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:03,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ef0da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03, skipping insertion in model container [2021-08-30 17:29:03,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:03,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:29:03,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:29:03,902 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/list-ext-properties/list-ext_2.i[23625,23638] [2021-08-30 17:29:03,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:29:03,910 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:29:03,934 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/list-ext-properties/list-ext_2.i[23625,23638] [2021-08-30 17:29:03,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:29:03,961 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:29:03,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03 WrapperNode [2021-08-30 17:29:03,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:29:03,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:29:03,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:29:03,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:29:03,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:03,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:03,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:03,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:04,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:04,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:04,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:04,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:29:04,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:29:04,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:29:04,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:29:04,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (1/1) ... [2021-08-30 17:29:04,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:29:04,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:29:04,063 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 17:29:04,074 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 17:29:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:29:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:29:04,099 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:29:04,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:29:04,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:29:04,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:29:04,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:29:04,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:29:04,100 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-30 17:29:04,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:29:04,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:29:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-08-30 17:29:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:29:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:29:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:29:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:29:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:29:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:29:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:29:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:29:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:29:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:29:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:29:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:29:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:29:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:29:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:29:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:29:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:29:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:29:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:29:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:29:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:29:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:29:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:29:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:29:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:29:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:29:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:29:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:29:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:29:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:29:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:29:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:29:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:29:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:29:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:29:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:29:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:29:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:29:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:29:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:29:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:29:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:29:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:29:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:29:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:29:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:29:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-30 17:29:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:29:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:29:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:29:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:29:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:29:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:29:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:29:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:29:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:29:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:29:04,317 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-30 17:29:04,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:29:04,426 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-30 17:29:04,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:04 BoogieIcfgContainer [2021-08-30 17:29:04,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:29:04,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:29:04,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:29:04,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:29:04,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:29:03" (1/3) ... [2021-08-30 17:29:04,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cebd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:29:04, skipping insertion in model container [2021-08-30 17:29:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:03" (2/3) ... [2021-08-30 17:29:04,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cebd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:29:04, skipping insertion in model container [2021-08-30 17:29:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:04" (3/3) ... [2021-08-30 17:29:04,435 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-08-30 17:29:04,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:29:04,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-08-30 17:29:04,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:29:04,484 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 17:29:04,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-08-30 17:29:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:29:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 17:29:04,503 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:04,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:04,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash -234092837, now seen corresponding path program 1 times [2021-08-30 17:29:04,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:04,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603716405] [2021-08-30 17:29:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:04,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:04,735 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 17:29:04,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:04,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603716405] [2021-08-30 17:29:04,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603716405] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:04,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:04,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:29:04,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351442815] [2021-08-30 17:29:04,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:29:04,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:04,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:29:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:29:04,766 INFO L87 Difference]: Start difference. First operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 17:29:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:04,917 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-08-30 17:29:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:29:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 11 [2021-08-30 17:29:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:04,923 INFO L225 Difference]: With dead ends: 98 [2021-08-30 17:29:04,923 INFO L226 Difference]: Without dead ends: 90 [2021-08-30 17:29:04,925 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:29:04,927 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.02ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:04,928 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 201 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 127.02ms Time] [2021-08-30 17:29:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-30 17:29:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-08-30 17:29:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 86 states have internal predecessors, (93), 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 17:29:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-08-30 17:29:04,957 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 11 [2021-08-30 17:29:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:04,957 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-08-30 17:29:04,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 17:29:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-08-30 17:29:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:29:04,958 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:04,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:04,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:29:04,961 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1332069837, now seen corresponding path program 1 times [2021-08-30 17:29:04,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:04,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044503234] [2021-08-30 17:29:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:04,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:05,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:05,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044503234] [2021-08-30 17:29:05,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044503234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:05,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:05,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 17:29:05,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285978729] [2021-08-30 17:29:05,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:29:05,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:29:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:29:05,050 INFO L87 Difference]: Start difference. First operand 90 states and 96 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 17:29:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:05,247 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-08-30 17:29:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:29:05,248 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 17:29:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:05,251 INFO L225 Difference]: With dead ends: 111 [2021-08-30 17:29:05,251 INFO L226 Difference]: Without dead ends: 111 [2021-08-30 17:29:05,252 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.07ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:29:05,253 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 160 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.45ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:05,253 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 10 Invalid, 252 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [34 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 162.45ms Time] [2021-08-30 17:29:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-30 17:29:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-08-30 17:29:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 87 states have internal predecessors, (104), 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 17:29:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2021-08-30 17:29:05,259 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 12 [2021-08-30 17:29:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:05,259 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2021-08-30 17:29:05,259 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 17:29:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2021-08-30 17:29:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:29:05,260 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:05,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:05,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 17:29:05,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:05,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:05,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1332069838, now seen corresponding path program 1 times [2021-08-30 17:29:05,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:05,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981837197] [2021-08-30 17:29:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:05,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:05,361 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 17:29:05,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:05,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981837197] [2021-08-30 17:29:05,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981837197] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:05,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:05,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 17:29:05,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145317555] [2021-08-30 17:29:05,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:29:05,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:29:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:29:05,363 INFO L87 Difference]: Start difference. First operand 91 states and 107 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 17:29:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:05,535 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-08-30 17:29:05,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:29:05,535 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 17:29:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:05,536 INFO L225 Difference]: With dead ends: 128 [2021-08-30 17:29:05,536 INFO L226 Difference]: Without dead ends: 128 [2021-08-30 17:29:05,536 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.14ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:29:05,537 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 167 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.94ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:05,538 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 10 Invalid, 275 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [30 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 153.94ms Time] [2021-08-30 17:29:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-30 17:29:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-08-30 17:29:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 107 states have internal predecessors, (122), 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 17:29:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-08-30 17:29:05,543 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-08-30 17:29:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:05,544 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-08-30 17:29:05,544 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 17:29:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-08-30 17:29:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:29:05,544 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:05,545 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:05,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 17:29:05,545 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:05,545 INFO L82 PathProgramCache]: Analyzing trace with hash 296118254, now seen corresponding path program 1 times [2021-08-30 17:29:05,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:05,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643035525] [2021-08-30 17:29:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:05,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:05,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:05,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643035525] [2021-08-30 17:29:05,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643035525] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:05,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:05,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:29:05,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907956220] [2021-08-30 17:29:05,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:29:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:29:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:29:05,612 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 17:29:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:05,963 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-08-30 17:29:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:29:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-08-30 17:29:05,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:05,964 INFO L225 Difference]: With dead ends: 156 [2021-08-30 17:29:05,964 INFO L226 Difference]: Without dead ends: 156 [2021-08-30 17:29:05,965 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.72ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:29:05,966 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.30ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:05,966 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 16 Invalid, 678 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [14 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 317.30ms Time] [2021-08-30 17:29:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-30 17:29:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2021-08-30 17:29:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 111 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 17:29:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2021-08-30 17:29:05,971 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2021-08-30 17:29:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:05,971 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2021-08-30 17:29:05,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 17:29:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2021-08-30 17:29:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:29:05,972 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:05,972 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:05,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 17:29:05,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash 296118255, now seen corresponding path program 1 times [2021-08-30 17:29:05,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:05,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979333686] [2021-08-30 17:29:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:05,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:06,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:06,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979333686] [2021-08-30 17:29:06,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979333686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:06,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:06,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:29:06,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238304382] [2021-08-30 17:29:06,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:29:06,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:06,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:29:06,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:29:06,084 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 17:29:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:06,473 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-08-30 17:29:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:29:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-08-30 17:29:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:06,474 INFO L225 Difference]: With dead ends: 159 [2021-08-30 17:29:06,474 INFO L226 Difference]: Without dead ends: 159 [2021-08-30 17:29:06,475 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 90.56ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:29:06,475 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.11ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 319.89ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:06,475 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 16 Invalid, 765 Unknown, 0 Unchecked, 3.11ms Time], IncrementalHoareTripleChecker [13 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 319.89ms Time] [2021-08-30 17:29:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-30 17:29:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2021-08-30 17:29:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 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 17:29:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-08-30 17:29:06,480 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 21 [2021-08-30 17:29:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:06,480 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-08-30 17:29:06,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 17:29:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-08-30 17:29:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:29:06,481 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:06,481 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 17:29:06,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 17:29:06,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:06,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1432577259, now seen corresponding path program 1 times [2021-08-30 17:29:06,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:06,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352737707] [2021-08-30 17:29:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:06,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:06,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:06,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352737707] [2021-08-30 17:29:06,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352737707] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:06,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:06,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 17:29:06,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153151696] [2021-08-30 17:29:06,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:29:06,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:29:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:29:06,567 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 17:29:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:06,802 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-08-30 17:29:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:29:06,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 22 [2021-08-30 17:29:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:06,804 INFO L225 Difference]: With dead ends: 191 [2021-08-30 17:29:06,804 INFO L226 Difference]: Without dead ends: 191 [2021-08-30 17:29:06,804 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 29.11ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:29:06,805 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 163 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 219.90ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:06,805 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 16 Invalid, 509 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [26 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 219.90ms Time] [2021-08-30 17:29:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-08-30 17:29:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2021-08-30 17:29:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 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 17:29:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-08-30 17:29:06,810 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 22 [2021-08-30 17:29:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:06,810 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-08-30 17:29:06,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 17:29:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-08-30 17:29:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:29:06,811 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:06,811 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:06,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 17:29:06,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1350239013, now seen corresponding path program 1 times [2021-08-30 17:29:06,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:06,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215463998] [2021-08-30 17:29:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:06,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:06,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:06,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215463998] [2021-08-30 17:29:06,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215463998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:06,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:06,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:29:06,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692502394] [2021-08-30 17:29:06,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:29:06,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:06,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:29:06,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:29:06,868 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 17:29:07,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:07,112 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2021-08-30 17:29:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:29:07,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2021-08-30 17:29:07,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:07,113 INFO L225 Difference]: With dead ends: 138 [2021-08-30 17:29:07,113 INFO L226 Difference]: Without dead ends: 138 [2021-08-30 17:29:07,114 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.12ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:29:07,114 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 108 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.09ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:07,115 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 16 Invalid, 585 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [13 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 220.09ms Time] [2021-08-30 17:29:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-30 17:29:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2021-08-30 17:29:07,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 104 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 17:29:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-08-30 17:29:07,128 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 24 [2021-08-30 17:29:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:07,129 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-08-30 17:29:07,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 17:29:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-08-30 17:29:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:29:07,131 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:07,131 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:07,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 17:29:07,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:07,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1350239012, now seen corresponding path program 1 times [2021-08-30 17:29:07,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:07,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005070642] [2021-08-30 17:29:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:07,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:29:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:07,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:29:07,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005070642] [2021-08-30 17:29:07,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005070642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:07,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:07,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:29:07,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628456389] [2021-08-30 17:29:07,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:29:07,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:29:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:29:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:29:07,221 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 17:29:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:07,516 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-08-30 17:29:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:29:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2021-08-30 17:29:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:07,517 INFO L225 Difference]: With dead ends: 136 [2021-08-30 17:29:07,517 INFO L226 Difference]: Without dead ends: 136 [2021-08-30 17:29:07,517 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.08ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:29:07,518 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 71 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236.58ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:07,518 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 16 Invalid, 642 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [9 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 236.58ms Time] [2021-08-30 17:29:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-30 17:29:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 93. [2021-08-30 17:29:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 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 17:29:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-08-30 17:29:07,521 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 24 [2021-08-30 17:29:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:07,521 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-08-30 17:29:07,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 17:29:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-08-30 17:29:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:29:07,522 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:07,522 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, 1] [2021-08-30 17:29:07,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 17:29:07,522 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:07,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2025386131, now seen corresponding path program 1 times [2021-08-30 17:29:07,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:29:07,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194517528] [2021-08-30 17:29:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:07,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:29:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:29:07,533 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:29:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:29:07,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 17:29:07,556 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:29:07,556 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-08-30 17:29:07,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-08-30 17:29:07,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-08-30 17:29:07,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-08-30 17:29:07,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-08-30 17:29:07,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-08-30 17:29:07,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 17:29:07,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:29:07,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:29:07 BoogieIcfgContainer [2021-08-30 17:29:07,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:29:07,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:29:07,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:29:07,587 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:29:07,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:04" (3/4) ... [2021-08-30 17:29:07,589 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:29:07,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:29:07,589 INFO L158 Benchmark]: Toolchain (without parser) took 3907.12ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 45.8MB in the beginning and 32.3MB in the end (delta: 13.6MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-08-30 17:29:07,590 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 28.0MB in the beginning and 27.9MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:29:07,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.30ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 39.3MB in the end (delta: 6.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:29:07,590 INFO L158 Benchmark]: Boogie Preprocessor took 72.71ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 36.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:29:07,590 INFO L158 Benchmark]: RCFGBuilder took 391.72ms. Allocated memory is still 62.9MB. Free memory was 36.3MB in the beginning and 42.9MB in the end (delta: -6.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2021-08-30 17:29:07,590 INFO L158 Benchmark]: TraceAbstraction took 3157.00ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 42.4MB in the beginning and 32.3MB in the end (delta: 10.1MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2021-08-30 17:29:07,591 INFO L158 Benchmark]: Witness Printer took 2.30ms. Allocated memory is still 75.5MB. Free memory is still 32.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:29:07,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 28.0MB in the beginning and 27.9MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.30ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 39.3MB in the end (delta: 6.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.71ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 36.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 391.72ms. Allocated memory is still 62.9MB. Free memory was 36.3MB in the beginning and 42.9MB in the end (delta: -6.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3157.00ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 42.4MB in the beginning and 32.3MB in the end (delta: 10.1MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 2.30ms. Allocated memory is still 75.5MB. Free memory is still 32.3MB. 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: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={-1:0}, i=0, p={-1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L560] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: 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 10 procedures, 117 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 3097.87ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 14.83ms, AutomataDifference: 2097.90ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.53ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 865 SdHoareTripleChecker+Valid, 1757.17ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 865 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 1367.19ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1008 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3764 IncrementalHoareTripleChecker+Invalid, 3907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 29 mSDtfsCounter, 3764 mSolverCounterSat, 21.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 340.95ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 58.95ms AutomataMinimizationTime, 8 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.31ms SsaConstructionTime, 107.16ms SatisfiabilityAnalysisTime, 597.40ms InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 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 17:29:07,623 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 17:29:09,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:29:09,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:29:09,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:29:09,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:29:09,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:29:09,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:29:09,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:29:09,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:29:09,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:29:09,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:29:09,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:29:09,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:29:09,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:29:09,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:29:09,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:29:09,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:29:09,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:29:09,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:29:09,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:29:09,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:29:09,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:29:09,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:29:09,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:29:09,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:29:09,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:29:09,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:29:09,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:29:09,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:29:09,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:29:09,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:29:09,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:29:09,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:29:09,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:29:09,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:29:09,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:29:09,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:29:09,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:29:09,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:29:09,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:29:09,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:29:09,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:29:09,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:29:09,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:29:09,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:29:09,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:29:09,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:29:09,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:29:09,530 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:29:09,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:29:09,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:29:09,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:29:09,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:29:09,532 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:29:09,533 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:29:09,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:29:09,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:29:09,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:29:09,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:29:09,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:29:09,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:29:09,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:29:09,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:29:09,534 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:29:09,534 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:29:09,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:29:09,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:29:09,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2021-08-30 17:29:09,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:29:09,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:29:09,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:29:09,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:29:09,794 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:29:09,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-08-30 17:29:09,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc9c49480/c33e7435699e4b6e830592a0a78fc2af/FLAG6d7b7437e [2021-08-30 17:29:10,254 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:29:10,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-08-30 17:29:10,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc9c49480/c33e7435699e4b6e830592a0a78fc2af/FLAG6d7b7437e [2021-08-30 17:29:10,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc9c49480/c33e7435699e4b6e830592a0a78fc2af [2021-08-30 17:29:10,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:29:10,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:29:10,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:29:10,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:29:10,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:29:10,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5257a132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10, skipping insertion in model container [2021-08-30 17:29:10,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:29:10,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:29:10,503 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/list-ext-properties/list-ext_2.i[23625,23638] [2021-08-30 17:29:10,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:29:10,514 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:29:10,541 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/list-ext-properties/list-ext_2.i[23625,23638] [2021-08-30 17:29:10,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:29:10,562 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:29:10,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10 WrapperNode [2021-08-30 17:29:10,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:29:10,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:29:10,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:29:10,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:29:10,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:29:10,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:29:10,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:29:10,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:29:10,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (1/1) ... [2021-08-30 17:29:10,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:29:10,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:29:10,625 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 17:29:10,653 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 17:29:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:29:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:29:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:29:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:29:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:29:10,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:29:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:29:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:29:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:29:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-30 17:29:10,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:29:10,663 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:29:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:29:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:29:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:29:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:29:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:29:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:29:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:29:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:29:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:29:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:29:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:29:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:29:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:29:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:29:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:29:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:29:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:29:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:29:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:29:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:29:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:29:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:29:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:29:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:29:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:29:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:29:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:29:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:29:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:29:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:29:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-30 17:29:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:29:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:29:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:29:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:29:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:29:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:29:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:29:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:29:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:29:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:29:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:29:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:29:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:29:10,934 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-30 17:29:11,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:29:11,014 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-30 17:29:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:11 BoogieIcfgContainer [2021-08-30 17:29:11,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:29:11,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:29:11,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:29:11,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:29:11,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:29:10" (1/3) ... [2021-08-30 17:29:11,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a913683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:29:11, skipping insertion in model container [2021-08-30 17:29:11,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:29:10" (2/3) ... [2021-08-30 17:29:11,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a913683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:29:11, skipping insertion in model container [2021-08-30 17:29:11,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:11" (3/3) ... [2021-08-30 17:29:11,033 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-08-30 17:29:11,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:29:11,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-08-30 17:29:11,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:29:11,066 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 17:29:11,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-08-30 17:29:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:29:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:29:11,081 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:11,081 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:11,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:11,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:11,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1300184920, now seen corresponding path program 1 times [2021-08-30 17:29:11,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:11,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777909615] [2021-08-30 17:29:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:11,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:11,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:11,095 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 17:29:11,099 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 17:29:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:11,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:29:11,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:11,301 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 17:29:11,350 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 17:29:11,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:11,393 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 17:29:11,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:11,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777909615] [2021-08-30 17:29:11,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777909615] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:11,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:11,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 17:29:11,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454563014] [2021-08-30 17:29:11,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:29:11,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:29:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:29:11,422 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 17:29:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:11,711 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-08-30 17:29:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:29:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-08-30 17:29:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:11,721 INFO L225 Difference]: With dead ends: 111 [2021-08-30 17:29:11,722 INFO L226 Difference]: Without dead ends: 103 [2021-08-30 17:29:11,724 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:29:11,731 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 149 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.50ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:11,732 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 18 Invalid, 176 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [33 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 249.50ms Time] [2021-08-30 17:29:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-30 17:29:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2021-08-30 17:29:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 79 states have internal predecessors, (92), 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 17:29:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-08-30 17:29:11,769 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 10 [2021-08-30 17:29:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:11,769 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-08-30 17:29:11,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 17:29:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-08-30 17:29:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:29:11,770 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:11,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:11,781 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 17:29:11,977 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 17:29:11,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:11,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1300184921, now seen corresponding path program 1 times [2021-08-30 17:29:11,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:11,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419116725] [2021-08-30 17:29:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:11,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:11,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:11,983 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 17:29:11,983 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 17:29:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:12,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:29:12,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:12,093 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 17:29:12,149 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 17:29:12,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:12,241 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 17:29:12,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:12,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419116725] [2021-08-30 17:29:12,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419116725] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:12,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:12,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:29:12,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895145971] [2021-08-30 17:29:12,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:29:12,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:12,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:29:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:29:12,243 INFO L87 Difference]: Start difference. First operand 83 states and 95 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 17:29:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:12,708 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-08-30 17:29:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:29:12,709 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 10 [2021-08-30 17:29:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:12,710 INFO L225 Difference]: With dead ends: 119 [2021-08-30 17:29:12,710 INFO L226 Difference]: Without dead ends: 119 [2021-08-30 17:29:12,710 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 67.63ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:29:12,711 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 275 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.75ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:12,711 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 12 Invalid, 249 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [47 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 424.75ms Time] [2021-08-30 17:29:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-30 17:29:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2021-08-30 17:29:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 97 states have internal predecessors, (107), 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 17:29:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-08-30 17:29:12,716 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 10 [2021-08-30 17:29:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:12,717 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-08-30 17:29:12,717 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 17:29:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-08-30 17:29:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:29:12,717 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:12,718 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:12,726 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 17:29:12,924 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 17:29:12,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1952159409, now seen corresponding path program 1 times [2021-08-30 17:29:12,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:12,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214880947] [2021-08-30 17:29:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:12,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:12,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:12,926 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 17:29:12,927 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 17:29:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:13,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:29:13,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:13,041 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 17:29:13,060 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 23 treesize of output 19 [2021-08-30 17:29:13,079 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 25 treesize of output 13 [2021-08-30 17:29:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:13,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:13,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:13,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214880947] [2021-08-30 17:29:13,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214880947] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:13,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:13,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:29:13,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122935894] [2021-08-30 17:29:13,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:29:13,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:29:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:29:13,150 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 17:29:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:13,638 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-08-30 17:29:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:29:13,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 17 [2021-08-30 17:29:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:13,639 INFO L225 Difference]: With dead ends: 140 [2021-08-30 17:29:13,639 INFO L226 Difference]: Without dead ends: 140 [2021-08-30 17:29:13,640 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.47ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:29:13,640 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 102 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 364.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 443.73ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:13,641 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 15 Invalid, 463 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [13 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 443.73ms Time] [2021-08-30 17:29:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-30 17:29:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2021-08-30 17:29:13,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 99 states have internal predecessors, (112), 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 17:29:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2021-08-30 17:29:13,648 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2021-08-30 17:29:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:13,649 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2021-08-30 17:29:13,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 17:29:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2021-08-30 17:29:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:29:13,649 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:13,649 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:13,656 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 17:29:13,852 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 17:29:13,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1952159408, now seen corresponding path program 1 times [2021-08-30 17:29:13,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:13,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667085935] [2021-08-30 17:29:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:13,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:13,856 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 17:29:13,860 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 17:29:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:13,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:29:13,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:13,963 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 17:29:13,985 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 17:29:14,004 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 19 treesize of output 15 [2021-08-30 17:29:14,028 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 39 treesize of output 27 [2021-08-30 17:29:14,034 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 24 treesize of output 12 [2021-08-30 17:29:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:14,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:14,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:14,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667085935] [2021-08-30 17:29:14,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667085935] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:14,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:14,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-30 17:29:14,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005867421] [2021-08-30 17:29:14,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:29:14,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:29:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:29:14,263 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 17:29:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:15,628 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-08-30 17:29:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:29:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 17 [2021-08-30 17:29:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:15,643 INFO L225 Difference]: With dead ends: 145 [2021-08-30 17:29:15,643 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 17:29:15,643 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 262.29ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:29:15,644 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 149 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1076.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1220.59ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:15,644 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 18 Invalid, 686 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [22 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1220.59ms Time] [2021-08-30 17:29:15,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 17:29:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2021-08-30 17:29:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 87 states have internal predecessors, (96), 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 17:29:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-08-30 17:29:15,660 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 17 [2021-08-30 17:29:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:15,661 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-08-30 17:29:15,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 17:29:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-08-30 17:29:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 17:29:15,662 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:15,662 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:15,671 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 17:29:15,874 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 17:29:15,875 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2002045966, now seen corresponding path program 1 times [2021-08-30 17:29:15,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:15,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425669006] [2021-08-30 17:29:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:15,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:15,877 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 17:29:15,877 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 17:29:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:15,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:29:15,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:16,010 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 17:29:16,044 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-30 17:29:16,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-08-30 17:29:16,065 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 15 treesize of output 7 [2021-08-30 17:29:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:16,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:16,151 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 148 treesize of output 140 [2021-08-30 17:29:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:16,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:16,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425669006] [2021-08-30 17:29:16,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425669006] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:16,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:16,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-08-30 17:29:16,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836550803] [2021-08-30 17:29:16,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:29:16,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:29:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:29:16,221 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 17:29:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:16,765 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-08-30 17:29:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:29:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 18 [2021-08-30 17:29:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:16,766 INFO L225 Difference]: With dead ends: 192 [2021-08-30 17:29:16,766 INFO L226 Difference]: Without dead ends: 192 [2021-08-30 17:29:16,766 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 119.70ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:29:16,767 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 212 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 399.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 473.19ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:16,767 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 18 Invalid, 547 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [42 Valid, 455 Invalid, 0 Unknown, 50 Unchecked, 473.19ms Time] [2021-08-30 17:29:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-30 17:29:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 98. [2021-08-30 17:29:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 94 states have internal predecessors, (105), 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 17:29:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-08-30 17:29:16,771 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2021-08-30 17:29:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:16,771 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-08-30 17:29:16,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 17:29:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-08-30 17:29:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 17:29:16,771 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:16,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:16,780 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 17:29:16,976 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 17:29:16,977 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:16,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1259494057, now seen corresponding path program 1 times [2021-08-30 17:29:16,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:16,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645494388] [2021-08-30 17:29:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:16,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:16,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:16,979 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 17:29:16,979 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 17:29:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:17,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:29:17,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:17,077 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 17:29:17,105 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 19 treesize of output 15 [2021-08-30 17:29:17,111 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 17:29:17,138 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 39 treesize of output 27 [2021-08-30 17:29:17,141 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 24 treesize of output 12 [2021-08-30 17:29:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:17,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:17,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:17,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645494388] [2021-08-30 17:29:17,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645494388] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:17,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:17,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-30 17:29:17,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929357350] [2021-08-30 17:29:17,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:29:17,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:17,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:29:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:29:17,365 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 17:29:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:18,661 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-08-30 17:29:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:29:18,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 18 [2021-08-30 17:29:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:18,662 INFO L225 Difference]: With dead ends: 124 [2021-08-30 17:29:18,662 INFO L226 Difference]: Without dead ends: 124 [2021-08-30 17:29:18,663 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 258.06ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:29:18,663 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1018.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1154.45ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:18,663 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 24 Invalid, 725 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [14 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1154.45ms Time] [2021-08-30 17:29:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-30 17:29:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-08-30 17:29:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 84 states have internal predecessors, (95), 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 17:29:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-08-30 17:29:18,667 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-08-30 17:29:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:18,667 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-08-30 17:29:18,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 17:29:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-08-30 17:29:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 17:29:18,668 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:18,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:29:18,701 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 17:29:18,873 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 17:29:18,874 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1259494058, now seen corresponding path program 1 times [2021-08-30 17:29:18,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:18,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085179078] [2021-08-30 17:29:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:18,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:18,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:18,875 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 17:29:18,876 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 17:29:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:29:18,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:29:18,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:29:18,963 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 17:29:18,973 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 23 treesize of output 19 [2021-08-30 17:29:18,983 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 25 treesize of output 13 [2021-08-30 17:29:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:18,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:29:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:29:19,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:29:19,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085179078] [2021-08-30 17:29:19,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085179078] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:29:19,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:29:19,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:29:19,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368492835] [2021-08-30 17:29:19,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:29:19,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:29:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:29:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:29:19,044 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17:29:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:29:19,433 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-08-30 17:29:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:29:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-08-30 17:29:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:29:19,434 INFO L225 Difference]: With dead ends: 113 [2021-08-30 17:29:19,434 INFO L226 Difference]: Without dead ends: 113 [2021-08-30 17:29:19,435 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.86ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:29:19,435 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 84 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 357.20ms IncrementalHoareTripleChecker+Time [2021-08-30 17:29:19,435 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 15 Invalid, 387 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [12 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 357.20ms Time] [2021-08-30 17:29:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-30 17:29:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2021-08-30 17:29:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 79 states have internal predecessors, (89), 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 17:29:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-08-30 17:29:19,438 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 18 [2021-08-30 17:29:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:29:19,438 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-08-30 17:29:19,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17:29:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-08-30 17:29:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:29:19,439 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:29:19,439 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] [2021-08-30 17:29:19,448 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 17:29:19,645 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 17:29:19,646 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-08-30 17:29:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:29:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash 131545524, now seen corresponding path program 1 times [2021-08-30 17:29:19,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:29:19,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466548559] [2021-08-30 17:29:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:29:19,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:29:19,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:29:19,647 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 17:29:19,648 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 17:29:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:29:19,720 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:29:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:29:19,790 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 17:29:19,791 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:29:19,791 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-08-30 17:29:19,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-08-30 17:29:19,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-08-30 17:29:19,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-08-30 17:29:19,823 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 17:29:20,002 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 17:29:20,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:29:20,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:29:20 BoogieIcfgContainer [2021-08-30 17:29:20,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:29:20,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:29:20,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:29:20,027 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:29:20,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:11" (3/4) ... [2021-08-30 17:29:20,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:29:20,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:29:20,030 INFO L158 Benchmark]: Toolchain (without parser) took 9754.53ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 26.3MB in the beginning and 47.0MB in the end (delta: -20.7MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-08-30 17:29:20,030 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory was 32.6MB in the beginning and 32.6MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:29:20,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.52ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.2MB in the beginning and 36.2MB in the end (delta: -10.0MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2021-08-30 17:29:20,031 INFO L158 Benchmark]: Boogie Preprocessor took 38.02ms. Allocated memory is still 60.8MB. Free memory was 36.0MB in the beginning and 32.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:29:20,033 INFO L158 Benchmark]: RCFGBuilder took 413.11ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 24.3MB in the end (delta: 8.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-08-30 17:29:20,034 INFO L158 Benchmark]: TraceAbstraction took 9000.77ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.8MB in the beginning and 47.6MB in the end (delta: -6.8MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2021-08-30 17:29:20,034 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 73.4MB. Free memory was 47.6MB in the beginning and 47.0MB in the end (delta: 556.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:29:20,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory was 32.6MB in the beginning and 32.6MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.52ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.2MB in the beginning and 36.2MB in the end (delta: -10.0MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.02ms. Allocated memory is still 60.8MB. Free memory was 36.0MB in the beginning and 32.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.11ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 24.3MB in the end (delta: 8.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9000.77ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.8MB in the beginning and 47.6MB in the end (delta: -6.8MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 73.4MB. Free memory was 47.6MB in the beginning and 47.0MB in the end (delta: 556.0kB). 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: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={1:0}, i=0, p={1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={1:0}, i=0, p={1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={1:0}, i=0, p={1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={1:0}, i=0, p={1:0}, y=0] [L560] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={1:0}, i=0, p={1:0}, y=0] - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: 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 11 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 8944.85ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 11.03ms, AutomataDifference: 4916.49ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.75ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 4323.40ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1056 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 3708.50ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 50 IncrementalHoareTripleChecker+Unchecked, 1058 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3000 IncrementalHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 26 mSDtfsCounter, 3000 mSolverCounterSat, 21.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 838.97ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 61.99ms AutomataMinimizationTime, 7 MinimizatonAttempts, 289 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.57ms SsaConstructionTime, 154.81ms SatisfiabilityAnalysisTime, 1469.95ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 1 QuantifiedInterpolants, 1010 SizeOfPredicates, 31 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:29:20,074 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...